A soldier can carry twice the number of rounds of 5.56 NATO versus the WW1 and WW2 .30-06, a consideration. Latter they switched to the .45-70. Understanding Bullet BC (Ballistic Coefficient) We hunters love to argue endlessly about calibers, cartridges, bullet weights, and muzzle velocities, but we should be equally concerned with BCs — Ballistic Coefficients. Loadout with the old Garand was 80 rounds though most carried more, just like today. manu factured weight (160 grains new, 15 6.4 when discovered). This is bullet expansion. A 100 rounds of 7.62 NATO is about 5.33 pounds whilst the 5.56mm NATO is 2.64 pounds. It will make sense when you’re told to mount your scope as close to the barrel of a gun as possible. It’s called a cone because the farther the distance from the gun the larger the circle becomes. The 100 grain Barnes bullets are not ideally suited to light bodied game. Casings can be made from a variety of different materials depending on the specific caliber. Infantry loads are up to around 80 pounds for some specialists, so any weight savings is appreciated by those who must hump it across the desert. You want to understand the grain … In this Geauga Firearms Academy video I explain basics of bullets (the actual projectile) and grain weight. One pound is equal to 7000 grains, and there are 437.5 grains in an ounce. How to Find the Perfect Sleeping Bag! From another perspective, consider a 100-grain .308 bullet (they exist!) For more info: Best .45 ACP Ammo; Best .45 ACP Pistols That Are Not 1911s; Best 1911s.38 Special & .357 Magnum. The basic understanding of bullet ballistics will help you know how to sight in your gun. The basic understanding of bullet ballistics will help you know how to sight in your gun. © 2020 Shooting Range Industries LLC. The 6mm 108 Grain Elite Hunter bullet was developed for hunters and long range enthusiasts seeking a high ballistic coefficient (BC) projectile that delivers massive hydrostatic shock. Transferring all the bullets energy to the animal. Of course, bullets are designed to punch a wound channel, and this inevitably damages meat. 7mm caliber (.284" diameter) bullets weighing less than 120 grains are usually varmint bullets, while 130-140 grain bullets are normally for CXP2 game. I was carrying a 30-06 loaded with 180 grains soft point. These include a 75 grain X, an 85 grain X, a 90 grain XBT, the 100 grain XLC (coated), the 100 grain TSX and 115 grain TSX. The cartridge consists of a bullet, a case, powder, and a primer. The lower the number the larger the diameter of the shotgun shell. The sightline is laser beam straight. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Rifle Shooting Position, The Common Positions, and Their Uses. The science of ballistics is complex. This is independent of caliber and weight since both size and weight is taken into consideration in the formulas that determine BC. For comparison the Russian 7.62x39mm M43 round for the AK series weighs in at about 3.81 pounds per 100 rounds. We'll assume you're ok with this, but you can opt-out if you wish. How fast the bullet leaves the rifle as measured by a chronograph. If you are using iron sights it would include the rear and front sights being lined up with your eyes line of sight and the target. I can tell you from personal experience that this is not a round to hand to someone who’s never fired a gun before. It is the best to use in target shooting. Putting a small hole through an animal can kill it if you hit vital organs. 9mm Luger 125 gr. Understanding Ammunition; Handgun, Shotgun & Rifle Caliber, Bullet Grain, Ammo Length & More. 3D Printing, An Add-on Hobby for the Gun Enthusiast, The Camping First Aid Kit Items Needed to Help In an Emergency, 4 Fly Fishing Knots You Need to Know How to Tie. This means the shape of the bullet doesn’t matter when you look at SD. The end of the case was ripped off and the powder was dumped down the barrel then the case with the ball was rammed in on top of the powder. 62gr XM855 vs 77gr SMK vs 55gr FMJ. Since their importation, these rounds have steadily grown in popularity among owners of bolt-action rifles and semi-automatic such as the Ruger Mini-30. Bullets can weigh anywhere between 15 grains for the lightest 17 HMR bullets all the way up to 750 grains for the heavier .50 BMG rifle loads. However, no one calls it a projectile. Fast forward to WW1. It did. It would be very easy to have a bullet with a low BC and a high SD. It is always called a bullet. The casing refers to the jacket, shell or cylinder that holds the propellant, bullet and the primer all in one set position. The farther from the gun a bullet travels the more bullet drop you will experience. Which is going to push them over? 437.5 grains equals one ounce. People usually just call them just bullets. What really affects the SD of a bullet is the length. However, on a box of ammunition intended for purchase, the grains advertised almost always refer to the projectile’s mass. So, from this, we can assume henceforth that a person or animal reacts to the psychological pressures of the physical injury and the ‘surprise’, rather than the actual force of the impact. The bullet is about 230 grains weight-wise with a mild recoil. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Most GI’s state they seldom use full auto, well the M16 weapons and their derivatives have a 3 round burst limiter, so most combat entails semi-auto fire only. Aluminum cases, polymer and caseless ammo are all being experimented with to save weight. As long as the velocity is equal to bullets with a lower BC. It takes 437.5 Grains to make an ounce, so the larger the number of Grains, the heavier the bullet. Expressed in terms of sectional density, the 100-grain 7mm bullet has an SD of .177, but a 6mm bullet of that same weight has an SD of .242. Bullets are measured in a unit of mass called grains (abbreviated “gr.”). A small entry hole and large exit wound is better. A grain is a very small unit of measurement where there are 437.5 grains in an ounce. The more a bullet expands the more energy it transfers to its target. Ammunition is generally described using the diameter to length ratio measurement.For example: 1. The Best Sleeping Bag Liner, and Why You Need To Use One, Winter Driving Tips, How to Be A Safer Driver in the Winter. Given the same base and nose contours, the 200-grain slug should be twice as long as the 100-grain. Understanding Ballistics of Long-Range Shooting Here's what is impacting the flight of your bullet and, ultimately, its accuracy. It’s good to know that the bore line and sightline are not parallel when the gun is sighted incorrectly. This means if the bullet drop is 10″ at 200 yards and the gun is sighted in to be on target at 100 yards the bullet has fallen 10″ in 100 yards. A grain is the smallest unit of measure in the avoirdupois system. Better yet which one is going to keep going, after going through the wall? Best Rifle Scope Under $200, and Why They Are The Best. The list can go on and on of what ballistics does in the shooting world. It helps you understand the reason for different bullet weights and types. 339 (XVII, 49) was found on one of the stretchers used to -carry the men into emerge ncy surgery .- This slug is virtually whole, that is, it is neither dented , distorted , crumbled , or reduced significantly from its. Bullet drop is how fast the bullet hits the ground versus how far it travels from the gun. With a 7mm Remington Magnum firing a 175-grain bullet, we measured a 7.5-inch difference in point of impact between firing east and west. In Vietnam the western forces were burning through a million rounds a day. Loads are available with reduced velocity and pressure as well as increased velocity and pressure for stronger firearms. What Is Bullet Grain? Generally, bullets that are heavy for caliper with pointed tips and boat tails have a higher BC. There is a lot that goes into understanding bullet ballistics. Low sectional density is like hitting a brick wall with a Prius. Rifle Shooting Merit Badge, Tips to Better Teach Rifle Shooting. This needs to be addressed before we go much further. The grain is the weight of the bullet. If you shoot at a target 200 yards away, they will be within a 2” circle. It helps you understand the reason for different bullet weights and … Plus it helps reloaders pick the right bullet for their application. It will have a set number of cartridges in it. This is where you have to understand what MOA is so you can understand what a click is. Shooting north, the projectile is departing from a larger circumference, faster rotating point on the earth than the target. This website uses cookies to improve your experience. 9×19 MM cartridge is……Take a guess….. 9mm wide and also 19mm long.We all know that shotgun shells are measured in gauge. Keep in mind that the .45-70 weighs 9.375 pounds per 100 rounds and is bulky. March 16, 2020 SRIAdmin Uncategorized No Comments. V-MAX ® 83170 2550 1902 1379 —245 137 72 -1 50 -8 V 17 HMR 20 gr. The light 85 and 90 grain bullets are well suited to hunting game weighing between 60 and 100kg (130-220lb) but do their best work at impact velocities of above 2600fps. The mathematical results showed … What is Bullet Weight / Grain? But by understanding what happens … You run out of ammo, well you do have your bayonet, right! Since the diameter didn't increase, the length must have. Some of the confusion comes from the manufacturing and loading of cartridges. Therefore, if you were to purchase a box of .223 Remington Brown Bear 55-Grain FMJ, the 55 refers to the mass of the bullet itself, not the entire cartridge — just the projectile. This is based on the distance to the target, compared to the distance the rifle was sighted in for. Understanding Bullet BC (Ballistic Coefficient) We hunters love to argue endlessly about calibers, cartridges, bullet weights, and muzzle velocities, but we should be equally concerned with BCs — Ballistic Coefficients. A soldier can carry twice the number of rounds of 5.56 NATO versus the WW1 and WW2 .30-06, a consideration. There are many forces acting upon a bullet as it sails through the atmosphere, and we can all become better shooters if we understand how those forces work. Answer 1 of 3: HI, We are trying to work out whether or not it is a good idea to buy a rail pass or not but are having trouble understanding hyperpedia and their pricing system. Back in the 1860’s after the Civil War the U.S. adopted the .50-70 cartridge for the trap-door conversion of the Springfield rifle. This line is always a perfectly straight line. Ammo is one of the single most critical expenditures for a combat unit engaged in operations. The most common weight of a 9MM bullet is 115 gr. For more detailed, 1 grain is equal to 1/7000th of a pound. Soft nose lead tipped bullets, more commonly known as soft points are projectiles with an exposed lead core that is partially encased in a harder copper jacket. Keeping the weight below 50 pounds goes along way in keeping the individual solder efficient and effective. The important thing to understand is that the higher BC the farther the bullet will travel. … The Russian 7.62x54R is comparable to the .30-06. 9mm vs .45 ACP. bullet slug, Commission Exhibit No. However, we will get to that later. Battle Sight Zero, the Art of Zeroing your Rifle for Hunting. You get the picture. The long 200-220 grain bullets are generally reserved for use on very large and/or dangerous game, such as Alaskan moose and brown bear in the largest cartridges, starting with the .30-06 and standard length .300 Magnums..32/8mm caliber (.321-.323" diameter) bullets are generally intended for hunting medium and large game. Bullets do not rise when they come out of the barrel of a gun. My friend is carrying a 30-30 and almost apologizes for carrying the gun. Each scope or sight is different. Bullet weight is measured by Grains. There are 437.5 grains in an ounce (or 15.4 grains per gram for those who use metric). The Biggest Bucks of 2020. The bullets are usually of about 46 to 61 grain. Hornady® Bullet Types: A-MAX ... V 17 Mach 2 15.5 gr. Anyone who decides to build up their own upper will need to decide between an array of barrel choices. Berger currently offers two bullets in 7mm: 168 grain and 180 grain VLD’s. Many times it’s a term that is interchanged with bullet trajectory, or bullet path. Fast forward to WW1. I like to go with a middle of the road grain. Nearly all of it was built in recent year on new tracks and using brand new train stations. Even if you never do any long-range shooting, and just go plinking once a year, you still need to understand bullet ballistics. With different bullet weights for each for the same caliber. by Philip Massaro - Sunday, September 30, 2018. If you take two bullets in different calibers that have the same BC (ballistic coefficient) and fire them at the same velocity they will have the exact same trajectory. This helps hunters pick the right ammo. Point two: WW1 through Korea most rifles had sights marked out to 1000 meters, though most combat took place at 300 meters or less. And it can however cause great damage if used on human targets; it can actually kill. But opting out of some of these cookies may have an effect on your browsing experience. There’s everything from light .223 varmint rounds that are just fine with slower twist rates like 1:12-inch, to commercial 55-grain loads that are content with 1:9-inch, to badass military loads such as Mk262 with 77-grain SMK bullets that like 1:7-inch twist rates. The standard load out of 5.56 NAT0 is 300 rounds for ten 30 round magazines (actually it is 280 rounds as they only carry 28 rounds to prevent spring binding of the magazines). Stating that is all he can afford. A 100 rounds of .30-06 weighs about 5.75 pounds. When you see “grain” (sometimes abbreviated as “gr.” or “grs.”) preceded by a number on a box of ammo, it is referencing the weight of the bullet. The science of ballistics is complex. You will have a hard time understanding the important concepts of bullet ballistics. A good example is looking at results of new technology Titegroup powder versus old technology powder HP-38. Your arm will try to throw them both at the same speed but the football will travel a lot farther. In words, the bullet energy (in foot-pounds) is equal to the bullet weight (in grains) times the square of the bullet velocity(in feet per minute) divided by 450,437. Bullets are measured in a unit of mass called grains (abbreviated “gr.”). Okay, so the first part: what you gain and lose with lighter-for-caliber bullets compared to heavy-for-caliber bullets. Sectional Density is the bullet’s weight in pounds divided by the square of its diameter. In fact, the first cases were made of paper, and used for muzzle-loaded rifles. Bullet Weight: 125 gr; 7.62x39mm. It is just a projectile. Basic Bullet Ballistics, Definitions, & Concepts To Understand, 10/22 Stocks How to Choose the Best Stock for Your Ruger. A “grain” is really small since 7000 grains make up one pound. Most casings are made of a brass or brass alloy metal but this is one area where ammunition’s manufacturers continue to improve … The US introduced the 5.56x45mm into the Vietnam conflict with most of the soldiers where carrying 7.62x51mm NATO in their M14 rifles. This website uses cookies to improve your experience while you navigate through the website. Bullets can weigh anywhere between 15 grains for the lightest 17 HMR bullets all the way up to 750 grains for the heavier .50 BMG rifle loads. Fast forward to WW1. Toss around a football, and you’ll understand the concept; once you’re able to channel your inner Tom Brady and achieve that perfect spiral, your passes will fly truer and farther. Of course, if you sighted the rifle in at 200 yards on that gun the bullet would then be considered 0″ at 200 yards but it maybe 24″ at 300 yards even zeroed at 200 yards. The standard … Calculate the energy the bullet will deliver to the target on impact using the formula Energy = Bullet Weight x Velocity^2 / 450,437. Learn how your comment data is processed. This cone is where every bullet will hit if no outside forces act on it. NTX® 83171 2525 1830 1291 —219 115 57 -1 5 0 -93 V 17 HMR 17 gr. Barrel Twist [?] This is still called 1 MOA. For those who aren’t math people. Even if you never do any long-range shooting, and just go plinking once a year, you still need to understand bullet ballistics. I’m going to insert a gyroscopic stability factor of 1.5 for s, based on Litz’s recommended minimum. Want A Better Trigger? These constitute most calibers along with the Russian 5.45x39mm encountered on the modern battlefield. Every sight will be different as to what one click equals in distance. Using a laser from the gun bore. SUBSCRIBE. This is 1 MOA. The bullet path is always a downward arc towards the earth. The ability of a bullet to penetrate is sectional density. Loadout with the old Garand was 80 rounds though most carried more, just like today. A grain is a measurement of weight. The 108’s pair well with platforms chambered in 6mm Creedmoor, 6mm BR, 6x47 Lapua, 243 Winchester, 6mm Remington, 6XC, and a great number of other 6mm wildcat cartridges popular today. Just like when you throw a ball it goes up then back down in an arc because you know to throw the ball upwards. If you do more research you can spend hours figuring out the exact path of each bullet fired from your rifle based on shape, size, weight, and velocity of your bullet. As an example, many scopes will tell you that each click of the adjuster is equal to 1/4 MOA or 1/4″ of movement to the sight at 100 yards away. A 100 rounds of .30-06 weighs about 5.75 pounds. That, however, may not necessarily always be the case. Understanding Bullet Grain. XTP bullet style, while the other is a lighter 110-gr. Gun weight was 40 oz. The sightline is an imaginary line drawn from your eye through your sights to the target. 2. The Germans took notice and introduced their 7.92x33mm Kurtz to Eastern front while the Soviets took note and introduced the 7.62×39 M43 cartridge used is the SKS carbine and the AK-47 rifles. If they where even at point-blank range your bullet would always hit low. Because a longer bullet will be heavier for caliber, it’s sectional density will be higher. The complicated part is the actual gun, right? You also have the option to opt-out of these cookies. The sightline is straight to the target. The Bore line is a straight line coming out of the bore of a gun. Usually, when someone talks about bullet drop or bullet drop calculator they are referring to how low the bullet will hit compared to where the sights where aimed. One pound is equal to 7000 grains, and there are 437.5 grains in an ounce. and a 200-grain .308 bullet. Generally, the caliber is meant for firing smaller targets like snakes, rats and birds. Let us also clarify that we are discussing the merits of heavier or lighter grain weights for the same caliber, such as 115 gr vs 147 gr 9mm. Before you can learn about ballistic you need to understand a few basic definitions. Pointed bullets that fly well, then expand when they hit their target to release more energy into the target. If you purchase a 55-grain cartridge, meaning the actual weight of bullet passing the barrel is equal 55 grain. January 6, 2016. Best Upgrades for a Ruger 10 22 Trigger, Boy Scout Tents, Tips for Choosing the Right Tent. China's high speed train network is the longest in the world. If you’re using a scope it’s from your eye through the crosshairs to the target. Bullet expansion is how much a bullet changes shape with it hits a target. This does not include the case. Ballistic Coefficient is a matter of aerodynamics. Latest. Generally, the caliber is meant for firing smaller targets like snakes, rats and birds. There is a lot of complicated math to figure out the ballistic coefficient of a bullet, and you can see it all here. This site uses Akismet to reduce spam. Berger Bullets ballisticians recommend the slowest twist to correctly stabilize its 185-grain VLD match bullets as 1:12. Take a 100-grain bullet, for example: In 7mm (.284) that would be very light indeed, but it would be quite heavy in 6mm (.243). This means that when a person or animal is struck with a bullet, the impact is less than or equal to the recoil felt by the person firing the bullet, as per Newton’s laws of motion. Since the sightline is above the bore line from the start. Which one is going through the wall? The problem is it’s hard to swing a 12″ wide board as quick as the rod. Of course, this isn’t the standard definition. All rights reserved. There are parts to the gun that you should know what it is and how it works. Planning for a Camping Trip? The football has a higher BC than the plastic baseball. It is mandatory to procure user consent prior to running these cookies on your website. Ammo is a consumable. In fact, this post barely touched the surface. A grain is the smallest unit of measure in the avoirdupois system. A Russian round, the 7.62x39mm cartridge is designed to be used in SKS rifles and AK-47s. Thus the bullet drop for that caliber on that gun would be 10″ at 200 yards. A Primer on Bullet Weight What Does Bullet Grain Mean? At 300 yards, they be within a 3” circle, still 1 MOA. 139-140 grain bullets are a good all-around (CXP2/CXP3 game) choice in the standard 7mm calibers, as are 150-154 grain bullets in the 7mm Magnum calibers. The bullet is fired out the end of the gun. Understanding Caliber, Bullet Weights And Ballistics' Opening day found me with a friend hunting the exclusive whitetail deer. It is the best to use in target shooting. To simplify it. But most will have up to 600 rounds available in vehicles and such. The Ransom Rest results (Figure 3) show that the 200-grain bullet had 5.9-percent less movement, and the 230-grain bullet had 9.1-percent less movement compared to the 185-grain bullet. Minute of Angle or better known as MOA. A bullet is shot the same way. A bullet is just a component of a cartridge. MOA is an angular measurement of 1/60th of a degree. And it can however cause great damage if used on human targets; it can actually kill. It works to interchange these terms even though there are differences in the terms. Whereas high sectional density is hitting the same wall with a Semi-Truck. This unit, which is often abbreviated as “gr” is equal to one 7,000th of a pound. When it comes to handguns you want to make sure you understand all the parts. The “twenty-two” long-rifle is the most common caliber in terms of units sold..22LR Round. Current .30-06 factory ammunition varies in bullet weight from 7.1 to 14.3 grams (109.6 to 220.7 gr) in solid bullets, and as low as 3.6 grams (55.6 gr) with the use of a sub-caliber bullet in a sabot. A gran is a unit of weight measurement usually abbreviated as ‘GR’ or ‘GRs’ and preceded by a number. If you don’t know some basic definitions from the shooting world. There’s also a unit of weight called a “grain” which is used to denote the weight of bullets and gunpowder. A “AA” battery weighs roughly 385 grains; All bullets are classified based on their weight in grains. The bullets are usually of about 46 to 61 grain. May 14, 2020 By David Emary. For those using the metric, 1 grain is equal to 15.41gram. But how much damage they actually cause depends on shot placement, impact velocity, bullet construction and cartridge design. A cartridge is the whole thing you load into a gun to fire it. To make a long story short my friend downs his deer with a single shot. If you opt in above we use this information send related content, discounts and other special offers. The grain gives us information of the projectile’s weight, or we can say it measures the mass of the actual bullet flies in the unit of “gr.” V.Shok federal premium 243 WIN 55 Grain - So urce. In this Geauga Firearms Academy video I explain basics of bullets (the actual projectile) and grain weight. Understanding VLD Bullets. For example, the most common 9mm Luger cartridges have bullet weights of 115 grains, 124 grains, or 147 grains. An example would be all your shots fall in a 1” circle at 100 yards. More The Gun Nuts. There are so many different bullet calibers, sizes and types that it can really make your head spin!So to try and help those… The Custom round has a heavier 125-gr. Heavier bullets are slowed down by their weight; this means they don’t travel as fast and are more affected by bullet drop. More. BC might sound like a bunch of hooey, but it’s really at the heart of bullet performance. The modern intermediate rounds, or so-called assault rifle cartridges are all good out to about 400 meters or so, are lighter so the loadout is more rounds. To start this discussion, let’s begin with an explanation of the basic unit of measurement for bullet weight: grains. Unless you reload ammo you will have no need to buy or own just bullets. Ask any hunter to name the best cartridge and bullet combination for big-game animals and you’ll get dozens of different answers. Understanding twist rates and bullet stability. The terms ammunition or cartridge are rarely used, but they should be. You’ll have to look at yours to find what one click is equal to. Either for a scope or irons sights. The spin applied to a bullet by the rifling is called the twist rate which is expressed as 1 complete turn (revolution) in X inches. More Common Bullet Calibers .22LR. No matter if the bullet hits the same spot as the sightline or not. Bullet Ballistics is the path a bullet travels after it leaves the barrel of the gun. A rimless bottlenecked intermediate cartridge, the 7.62x39mm is generally known to deliver medium range performance. So have fun learning more. 1 MOA is equal to basically a 1″ inch circle at 100 yards away from the gun. The bullet keeps that higher velocity to the right, or east, as it flies because there is nothing to change this velocity. The case is sometimes called brass. Stating that is all he can afford. Many use bullet grains as a unit of measurement when loading propellants in ammunition, so technically, those who say that bullet grains refer to the propellant are partially correct. Understanding Powder Efficiency. This means if you locked your firearm into a holding device and fired it multiple times all the bullets on average would hit in this circle. Starting flat and getting more round the farther the bullet gets from the barrel. Understanding Bullet Weight. As a rule of thumb, a bullet looses 5-15 fps in this short distance. These bullets weigh anywhere from 115 to 147 grains..45 ACP The.45 ACP is a mammoth bullet with impressive stopping power (the ability to incapacitate a target) and has been used by law enforcement and the military for many years. We also use third-party cookies that help us analyze and understand how you use this website. Over 45,000 rounds were expended per enemy killed. But before we explain how that happens, let’s look at some of the commonly used 5.56 rounds, their bullet grain, and muzzle velocity. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. The Hornady ® SST ® (Super Shock Tip) is designed to deliver tremendous shock on impact while expanding quickly and reliably, particularly at higher velocities.. Flat shooting and deadly accurate, it's an ideal bullet for whitetails, as well as most North American game animals from antelope to moose and similar-sized African plains game. So we divide 1.24 by .308 and get 4.026 calibers in length. The longer a projectile is the faster it must be spun to stabilize or remain point on in flight. There is a myth that people generally believe when it comes to bullet ballistics. A soldier can carry twice the number of rounds of 5.56 NATO versus the WW1 and WW2 .30-06, a consideration. Some ammunition labels spell out the word Grains, and others abbreviate it with “Gr.” This is not the same as counting grains of powder. Grains is the actual measurement that is used and there are 7,000 grains in a single pound. The weight has a lot to do with when you shoot the gun and the recoil that you might get back. So if I were to say a 12 gauge shell that would mean it’s 70 MM long or about 2 1/2 inches.… The case is what holds the powder, primer, and bullet. As you start to understand Ballistic Coefficient and Sectional density you will understand why there are so many different calibers. My friend is carrying a 30-30 and almost apologizes for carrying the gun. Loadout with the old Garand was 80 rounds though most carried more, just like today. Where to Start, & How to Make It Fun, Camping List-The Things You Need for Camping, Winter Car Essentials Kit, The Kit to Keep You Safe in Winter. Understanding What is MOA and How to Use It. That’s if you are a math guy. For every 100 yards, you add 1” to the diameter of the circle. Less weight, cheaper to ship more rounds carried by grunts. By contrast, a 185-gr .45 ACP bullet at 1,000 fps has 3.658 kg m/s, compared to 3.8603 kg m/s for a 230-gr projectile at 850 fps.