1/8/2024 0 Comments Subsonic 223 with 69 bthp![]() Those grains are where most shooters don’t stop in terms of bullet weight. You may already know this by now, but it’s still important to point out. Bullet grain (gr) refers to the weight of the bullet and not the whole cartridge.īullet grain plays a significant role in the performance of a bullet. Round Bullet Grain Muzzle Velocity Black Hills Afps Barnes Rangfps Winchester fps Hornady V-fps Hornady fps Elite Afps IMI ammo Razer Cfps Barnes VOR-TX 70 2850 fps Hornady BTHP Match Frontfps IMI Systems HPBT Mafps Allegiance Ammo – OneStrfps Barnes Precision Match Afps Allegiance Ammunition – Silent Strike non-frangifps Allegiance Ammunition’s Hog Strike 100 1975 fps Allegiance Ammunition – Silent Strike 110 1050 fps Atomic Ammunition – Tactical Cycling Subsonic Ammo 112 1050 fps 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. The lightest bullet that most people are familiar with is the 50 gr. This is also the highest muzzle velocity of all the rounds I’ve compiled. There are lighter ones, ranging from 40 gr to 50 gr with muzzle velocities of up to 4000 fps. However, the most commonly used 5.56 bullets range from 55 gr to 69 gr. Round Bullet Grain Muzzle Velocity Barnes Precision Match Afps Allegiance Ammunition – Silent Strike non-frangifps Allegiance Ammunition’s Hog Strike 100 1975 fps Allegiance Ammunition – Silent Strike 110 1050 fps Atomic Ammunition – Tactical Cycling Subsonic Ammo 112 1050 fps The Highest Grain 5.56 Roundsīelow are some of the heaviest 5.56 bullets. Several heavier bullets have been rolled out in the past two decades. Currently, the heaviest round is the 112 gr Atomic Ammunition Tactical Cycling Subsonic Ammo. It’s slightly longer than the regular 5.56 round, and the rifle has to be customized for it. The gun also has to have a 1:7 twist rate to stabilize this bullet effectively. ![]() It’s subsonic (less than sound’s speed) nature and high muzzle energy make it a perfect round for short-range tactical operations. Because of bullet tumble and the effects on precision, coupled with the low muzzle velocity, it’s for short range only.īut the rest of the ballistics performance is similar to the 9mm 115 gr FMJ bullet. Imagine all the damage you’d cause with a 5.56 112 gr bullet at 1050 fps and 275 foot-pounds muzzle energy. The Effects Of A Higher Grain Weight With 5.56 AmmunitionĪ higher grain weight causes more recoil, lower muzzle velocity, and a lower point of impact. It will take longer to reach the target and has a higher chance of falling due to gravity. The higher recoil causes the muzzle to flip. These effects are evident in the 5.56 bullets. The 50 gr has a 3275 muzzle velocity while the 112 gr has a 1050 muzzle velocity. The 112 gr can’t travel a long distance, but it will cause more damage in short-range shots. The 112 gr may be suitable for tactical operations because subsonic ammo has a lower noise level. But all 5.56 bullets are famous for their excellent stopping power. When planning to increase the bullet grain, you also need to consider the twist rate. This is the rate at which a bullet spins in the barrel. A1:7 twist means the bullet spins once every 7 inches. 1:7 and 1:8 twists are ideal for heavier bullets. But if you have 1:10 and slower twists, the rifle may not effectively stabilize the bullet. As tempting as it may be to fire the heaviest 5.56 bullet in a. 223.īut a 5.56 designated rifle can comfortably fire the.Ģ23 rifle, you could damage the firearm or injure yourself.ĥ.56 rifles are often designed for military operations and are packaged at higher pressures than the. But you can also look for a rifle designed to fire both. The 112 gr Atomic TCS is the heaviest 5.56 round by only a few grains of weight.
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