Subsonic vs supersonic 300 blackout5/27/2023 The Daniel Defense DDM4ISR is an integrally suppressed. 300 BLK is that it can be used with a suppressor and a short barrel - both of which are great for home defense. 300 BLK and 5.56 both have their pros and cons and what’s best for one person, may not be the best for another. Your home is your castle and for keeping the peace you should walk softly and carry a rifle. 300 BLK’s benefits just aren’t needed when all you’re doing is punching paper. It can get expensive so go with 5.56 NATO. Target shooting, training, or informal plinking, shooting is just plain fun. This is called high-velocity projectile fragmentation and deformation.Īs far as a clear-cut winner goes…it entirely depends on what you want from the round. Modern bullet design is closing the gap between calibers and making the smaller bores more and more effective.Īdditionally, the 5.56mm NATO was designed to break up, tumble and flip end over end when it encounters a target. 300 BLK does have slight obstacle defeating capabilities it isn’t markedly better in performance than the 5.56 with the correct loading. The stouter bullets, with more mass of a larger caliber, seem to be the more effective round. 300 BLK seems to have the edge in terminal ballistics.300 BLK It’s important to note that while energy numbers can give you an idea of power, it’s only a single data point. The round’s sectional density, the relationship of its mass and its weight, its ability to penetrate rather than fragment, and the wound channel it creates due to its bore size are all the study of terminal ballistics. Terminal ballistics of a round are the qualities it has when it hits the target. This is why the 5.56 shoots flatter and with less wind drift despite having almost half as much energy. 300 BLK uses bullets with a higher ballistic coefficient but isn’t moving fast enough to take advantage of its sleeker projectiles. You can see above that the 5.56 is significantly flatter than the. 300 BLK, and the most popular civilian barrel length of 16-inches.Įxterior ballistics are the qualities associated with how a projectile flies through the air - wind drift, bullet drop, and zero range all fall into this category. It shows the barrels that the cartridges were designed around…20-inches for the 5.56, 9-inches for the. In the table above you can see the compared ballistics of both the. 300 BLK is a nice option.įor a duty rifle that will conduct CQB work, this cartridge is a godsend. 300 BLK also shows its strengths when short-barreled rifles and silencers are involved. It also has the ability to cycle both super and subsonic ammunition without modification. 30 caliber bore, burns its full potential in a 9-inch barrel, and is a much better choice for hunting. 300 BLK offers a wider range of projectile choices, thanks to the. It also shoots flatter, experiences less recoil, and ammunition weighs about 40% less. The 5.56 is half the cost of 300 BLK and is available in more high-end loading suitable for precision rifle fire. 300 BLK and 5.56 NATO are intermediate-class rifle cartridges for target shooting, hunting, home defense, and plinking. The 5.56 requires a 20-inch barrel to reach peak ballistic performance.300 Blackout vs. 300 BLK also reaches peak ballistic potential from a 9-inch barrel.30 Cal and 5.56 Suppressors The 110-grain rounds are supersonic, and the 220 subsonic.Ī subsonic round is much easier to suppress, and much quieter when suppressed. 300 BLK does a lot the 5.56 can’t.įirst off, it’s a very versatile load with projectiles weights ranging from 110 grains to 220 grains. 300 BLK has easily been the most successful new caliber in the last 20 years.īesides the easy conversion between 5.56 and. The AR-15/.300 BLK combo does this markedly better than the 5.56 NATO. You need a hard-hitting, short, light, and quiet, gun that will own 0 to 300 yards. 300 BLK is really what two long protracted wars in the Middle East have taught us about the modern gunfight. What you have now is the ultimate short-range thumper that will feed both supersonic and subsonic ammunition and get its full ballistic potential (complete burn of the powder) from a 9-inch barrel. It is then stuffed with fast-burning powders and any number of bullets weighing from 110 to 220-grain.
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