Recoil-shy shooters can opt for lighter bullets, such as a 150-grain (9.7 g) bullet. What I'm saying is that if you loaded a: 95 grain 9mm bullet with .5 grains of Bullseye and another round with a 147 9mm bullet, same powder and charge, you will have a lower Recoil Impulse from the 95 grain bullet and a larger Recoil Impulse. Big bore semiauto or a lever gun? Velocity was measured with a Shooting Chrony chronograph at about 12 feet. © 2015-2021 TargetBarn, LLC. Ultimately, find a cartridge that performs well under testing or real world applications and most importantly, one that functions well in your gun. We ping steel with a .300 WinMag at over a mile. Power factor is a measurement of the momentum of the bullet and is used primarily in competition settings to determine perceived recoil. This means you have the option to read your magazine on most popular phones and tablets. Same powder, the 140d are more recoil, but slower vs faster isn’t what I am thinking about. Since the point is to stop a threat, you want ammo that travels deep enough into the target to hit vital organs while expanding enough to not leave the body and cause collateral damage. (If your curious 4.44x10^-6 slugs per grain. vs. .300 Win. Just seems to work well for me (just like 230 and 200 gr. It delivers .357 Magnum performance in a semi-automatic pistol. I did this to take advantage of the reduced recoil. The mathematical results showed that the 200-grain bullet had 2.2-percent less recoil, and the 230-grain bullet had 5.6-percent less recoil force compared to the 185-grain bullet (Figure 4). Do the bullets produce the same amount of recoil at the same power factor? Recoil is straight backward. Accuracy- In general, you may find that your gun performs with better accuracy with a certain bullet weight. Your barrel length and twist rate will play a part in your ammo selection, with heavier bullets requiring a faster twist rate. 280 AI Handy for Handloading Shooting 158 grain .357 mag rounds is a wild ride, for sure. Even if the Rainier bullet data was excluded, the two Berry's bullets (230- and 185-grain) illustrate the point very well. 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. Two different rounds could have different bullet weights and different velocities, but equal the same power factor. Competition- Depending on what competition venue and division you are competing in, power factor will probably be important to you and you will need to be sure your ammo is meeting the set requirements. ISS Prop House gives us the rundown on the guns used in Enemy at the Gate. I personally found for myself that running any bullet faster than 1,200fps had pretty unpleasant recoil and long shot recovery times. RN 1000rds Reman, PRICE $201.04 from 9MM LUGER Features such as the no-clog hollow point bullet and a design and powder load specifically for use in a full size handgun contributed to the decision as well as consistent performance in testing. I tested bullets of the same nose shape loaded to the same COL so that the internal volume is proportionately affected by the difference in the length of the bullet itself. The .223 Rem. In comparison, for the .25-06 Remington we’re looking at an 85-grain bullet sitting on 52 grains of the same H414 with a recorded velocity of 3,443 fps, a muzzle energy of 2,237 ft.lbs., a recoil impulse of 2.45 lbs.sec. Too bad. These are the weights most commonly offered by manufacturers, though you may occasionally come across a less common weight that is usually made for specialty purposes. In 45 ACP I found that the 200 gr bullet produced less recoil and muzzle flip than the 175, but that heavier bullets didn't seem to offer any more improvement. Apparently recoil hasn’t made its way to Hollywood and that part of the West Coast yet. 280 AI, 150-grain bullet, 3,100 fps: 26.86 f-p recoil energy, 15.7 fps recoil velocity. Lighter bullets traveling faster usually feel “snappier,” for instance. I have shot the 125 grain Sierra Pro Hunter in the M14 in NRA High Power Rifle competition in the 200 yard standing slow fire and sitting rapid fire stages. Hunting- Picking out a round for hunting follows the same line of thinking as picking out a round for self defense – you want to stop (in this case, kill) your living target. Do these different bullet weights achieve the same power factor when loaded with the same gunpowder charge weight? Heavier bullets are often described as having less felt recoil, but perhaps not enough to account for other characteristics of how the gun feels and behaves through the firing cycle. Physics dictates that bullet grain will play a role in recoil. 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. They are both stout. However, this assumes that the gunpowder charge weight is the same for all the different bullet weights. Some guns just don’t like certain cartridges and you want to know what your gun likes before you need to use it. In the shooting sports we call that reaction recoil or "kick." Light bullets must go faster than heavy bullets to achieve the same power factor, so they accelerate faster and spend less time in the barrel. I tried to control for this by using the same type of bullet (plated), albeit two different brands. Bullet penetration and expansion are far more important than weight when selecting a round that will be used on targets other than paper and steel. As Chuck Hawks notes in his great recoil table, the .223 Rem. Many shooters claim that the recoil of light and heavy bullets feels different when loaded to the same power factor. Velocity is one aspect where the 458 SOCOM has a weaker performance per round. Is it really true that they all fall to 230-grain ball .45 ACP? Depending on what competition venue and division you are competing in, power factor will probably be important to you and you will need to be sure your ammo is meeting the set requirements. a 122 grain has less recoil than a 154 grain while fired from my SKS rifle. Joined Jan 31, 2007 Messages 3,636 Likes 425. Recoil Levels in 7-pound Rifles. this is not true if I shoot reduced recoil ammo however. The short answer is that it really depends. Many of these sports are timed events, and a light recoiling load can allow faster follow-up shots, giving the shooter a speed advantage. Do not forget that rifle weight is a crucial factor in the recoil equation, inversely proportional to recoil. 147's loaded with fast burning powders have less recoil than 124's loaded with slow burning powders. Recoil– The big debate is whether bullet weight affects recoil. Shooters who just want to plink at the range can usually find an affordable round that consistently makes both their gun and wallet happy. The difference is the ratio of the weight of the bullet to the weight of the gun. Many shooters say that the light, fast bullet seems “snappier” while the heavy bullet’s recoil is more of a flat push. Chamber pressure is going to be higher. No. If you have a gun that has trouble feeding what you’re shooting, changing the weight of the bullet in your ammunition can change the profile, and with it, help your gun work better. Third, there is the issue of recoil impulse. Local gun store had some 165 in stock so I bought a couple of boxes of Blazer Brass. In 30-06 Springfield, Winchester’s 150-grain Ballistic Silvertip drops 7.3 inches at 300 yards (with a 200-yard zero.) Considerations that need to be taken include the size and anatomy of the game, the terrain, the distance at which you are shooting, and the laws and regulations where you are hunting. Specifically, what a bullet weight of say, 115 grain means relative to a bullet weight of 147 grain. and 223 Rem. Rating - 96 .3%. But they all typically have about 200 to 240 ft lbs of energy --- which by Newtons Law means that the energy out the end of the barrel is offset in the recoil. To test which bullet weight gives you the edge, three or four different charge weights were prepared with each bullet weight. This is the same for 115 grain, 124 grain, and 147 grain bullet. Other factors that can alter perceived recoil include barrel length, gun weight and design, and the shooter’s grip and stance. We know that is 147 grains, or 0.021 Lb. The industry has a lot of cool new products for handloaders in 2020. This value was then used to calculate recoil force. Only a handful of loads were listed with lighter or heavier bullet weights, such as 125, 200, or 220 grains. Some of the coolest new optics introduced this year range from Aimpoint's new COMPM5B red dot... James Tarr runs through the 3-Second Headshot drill. There are specialty rounds available specifically for the game you will be hunting, such as the Winchester Super-X .308 which is designed with a 180 grain soft point bullet specifically for deer and boar hunting. We’ll get to the latter in a minute, but first let’s get an understanding of what grain actually is. For example, you’ll find Federal American Eagle 9mm ammo in, 115 gr., 124 gr., and 147 gr. Although that tells you the magnitude of the recoil it does not really fully describe the recoil impulse. If you calculate the recoil force, you'll find that all bullet weights produce the same recoil when loaded to the same power factor. To get started, click the link below to visit mymagnow.com and learn how to access your digital magazine. You’ll need to buy a box or two of ammo in different bullet weights, then shoot the best groups you can at different distances to see what works best. As you shoot those groups to see how high or low they impact compared to your preferred sight picture, you may notice that all else being equal, ammunition with different bullet weights might feel different in your hands. Power factor requirements are determined by which division one competes in, and might be caliber specific. produces about half the felt recoil of the .243 Win. Because heavy bullets generally travel at a slower velocity and don’t rotate as fast, they can be harder to stabilize than a lighter, faster moving bullet. You see, it matters how much gunpowder is required to achieve the necessary velocity, because gunpowder weight affects recoil force. Linear regression was also used to calculate the distance the gun moved for 165 power factor. What works well in one gun may not be reliable in another, but by evaluating your needs and implementing a little bit of experimentation, you’ll be able to find the best fit for you and your gun. One last time, remember that the grain just measures the mass of the projectile, not all the cartridges. A heavy bullet may be less likely to be affected by external conditions such as wind, b. The Federal Premium Low Recoil 85 grain Hydra Shoes make a very nice carry load. This isn’t the weight of the entire round of ammunition, but just the projectile that leaves the barrel. In actuality, a single round of ammunition is made up of four basic components, with the bullet being just one of those elements. Thus with a 168 Grain .308 Winchester cartridge, the bullet will weigh 10.88 grams. The grain of a bullet is simply its weight. There isn’t always any predictability to what that might be, so if you’re looking for maximum accuracy out of your gun, you’ll need to try a wide variety. Other factors that can alter perceived recoil include barrel length, gun weight and design, and the shooter’s grip and stance. This article basically contains two parts. While this isn’t always dependent on weight, it’s one factor that can affect the shape – also known as the profile – of the bullet. With all these variables, it’s near impossible to definitively say which bullet weight has the most effect on recoil. My experience has been with 175 gr 45 swcs and 155gr .40 swcs. The same amount of gunpowder produced similar velocity regardless of bullet weight (Table 2), though the heavier bullet usually went faster with the same charge weight. For example, when fired from the exact same rifle, a .300 Win Mag load firing a 165 grain bullet has about 25% more recoil than a 7mm Rem Mag load firing a 150 grain bullet at a similar muzzle velocity. Two inches, single action, 25 yards, with Critical Defense 110-grain FTX bullets. They typically shoot whatever is cheapest and most available without any problems. Handguns in particular often come with fixed sights that can’t be easily adjusted. and a recoil energy of 18.53 ft.lbs. When Bullet Tooth Tony fires that massive handgun, his hands hardly move. For example, you’ll find Federal American Eagle 9mm ammo in. So now we know that there are different weights for bullets and that this is measured in grains, but what does it mean for the shooter? Velocity, energy, and even the burn rate of the specific powder used can contribute to differences in felt recoil. The other characteristic you might notice as you shoot groups for elevation is that you’re getting better or worse groups with different bullet weights, and your gun might be running more or less reliably between ammo types. Again, you need a round powerful enough to penetrate the vital organs of your target. Select a gunpowder that requires the smallest charge weight to achieve your desired velocity, because less gunpowder weight for the same velocity means less recoil. 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. Precision Shooting- When shooting rifles at longer distances, bullet weight becomes more important. Well, when we consider that for every action there is an equal and opposite reaction, we know a heavier bullet generally means more recoil than a lighter bullet. The gold standard for the M14 in NRA XTC competition is the 168 SMK, 41 grains of IMR4895 and Lake City brass. A grain is a unit of measurement of mass. 1SOW, Jan 12, 2011 #8. The Broad Side Recoil is generated as force is applied. The formula for ammo with the least recoil is to use heavy bullets in combination with a gunpowder than produces the least recoil. To learn more about power factor. It is calculated by multiplying the bullet weight by the velocity, then dividing by 1,000. are perfect. Mag., 150-grain bullet, 3,248 fps: 29.16 f-p recoil energy, 16.37 fps recoil velocity. My goal is to get back on target as fast as possible while shooting timed qualifiers. We frequently get questions about what all these descriptors on the box mean, and one of the most common questions is what “grain” is and what you should be shooting. Since recoil is calculated based on several factors including bullet weight, velocity, type of propellant and design of weapon, the bullet grain you choose will affect how much your shots will kick. This was confirmed by both methods of measuring recoil. Even if you’re satisfied with what you’re getting out of your current ammo of choice, it can be worth trying others from time to time to see if you can do better with a different choice. When Bullet Tooth Tony fires that massive handgun, his hands hardly move. Bullet Weight vs. Recoil: A lot of people intuitively believe there must be some link between bullet weight and recoil. It was earth-shattering in 1898, when invented, but even before WWII we knew better. Muzzle loader is slow recoil. Self Defense- If you’re choosing a self defense round, bullet weight should not be your initial concern. As we know, every fraction of a second can determine who wins the match. While I've used 115 (lots) and 147 gr bullets in my 9mms I have a reloaded some thousands 124/125 gr. Picking out a round for hunting follows the same line of thinking as picking out a round for self defense – you want to stop (in this case, kill) your living target. There are people who swear by a heavier bullet weight in their self defense rounds and it is true that certain brands and product lines have better track records than others. Competition shooters want minimal recoil and the current trend shows shooters that compete with lighter polymer guns lean towards heavier bullets, while those shooting heavy race guns favor lighter bullets. For the average shooter, reading the description on a box of ammo can make it feel like you’re deciphering a secret message. Now, if you stuffed a 180 grain bullet into the .308 and a 130 grain into the 7mm-08, a shooter would detect a reasonable difference. The use of multiple charge weights allows you to calculate the gunpowder weight required to achieve the 165 power factor with linear regression. Mar 21, 2011 #2. Surprisingly, the 250-grain Hornady SST pushed with 150 grains of White Hots at 2,052 fps only penetrated the gel ¼-inch more deeply than the bullet from the 100-grain loading at 1,750 fps. The longer bullet will take up more case and raise the chamber pressure. for my 38/357 Mag., etc.). So the area in inches is (3.14159*(.355^2))/4 = 0.099 in^2. That means that to move a heavier slug, recoil will be increased. You'll have a lot more options for ammo you can shoot than with the 9mm. Now I'm wondering about bullet choice...will we notice the difference in recoil between a 120 grain bullet, and a 140 grain bullet, such as the Nosler Ballistic Tip? The 200-grain bullets require 15-percent more gunpowder, and the 185-grain bullets require 27-percent more gunpowder than the 230-grain bullets. Thread Status: Not open for further replies. ©2021 Outdoor Sportsman Group. All Rights Reserved. The first method measured how far the gun moved in a Ransom Rest. This means a faster recoil impulse. The snappier recoil that people experience with lighter bullets likely results from their faster acceleration. By contrast, our average handload for the .25-06 Remington uses a 100-grain bullet on top of 52.5 grains of the same powder with a recorded velocity of 3,295 fps, muzzle energy of 2,410 ft.lbs., a recoil impulse of 2.63 lbs.sec. COL is another variable that can affect these results since it affects pressure, which affects velocity. This means that the lighter bullet will spend less time in the barrel than the slower moving heavy bullet, causing a difference in perceived recoil. If the bullet and the gun were of the same weight, the gun would recoil (freely) with the same velocity as the bullet. Then the 9mm crowd seem to favor heavier 147 grain bullets over smaller 115 grain bullets regarding recoil. 300 Ultra Mag vs 300 Win Mag. Also, please understand that there are dozens of loads for any given bullet weight in any cartridge that will produce the same velocity, but a different amount of recoil. make perfect sense for plinking. This can differ from gun to gun and experimenting with different rounds is the best way to figure out what works best for you. 9mm bullet is 0.355" diameter. Recoil energy (free recoil) greater than 20 foot-pounds force (27 J) will cause most shooters to develop a serious flinch, and the recoil energy of an 8-pound (3.6 kg) rifle firing a 165-grain (10.7 g) 30-06 bullet at 2,900 feet per second (880 m/s) is 20.1 foot-pounds force (27.3 J). Col is another variable in play then all bets are off 230 and 200 gr in! Nearly 25 yards, with Critical defense 110-grain FTX bullets any recoil table the... 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