![]() Choosing the “right” caliber for you depends completely on how you plan to use your firearm. To Sum It Upīoth the 300 BLK and the 5.56 have their pros and cons, as is the case with virtually any caliber. Consider these trade offs when making your decision. This, of course, comes at the cost of velocity. 5.56 Rounds will shoot flatter over extended distances and thereby help you become a more accurate shooter at range, but the 300 BLK is going to provide you with more downrange energy because they are significantly heavier rounds. When it comes to choosing between these two calibers, you’re basically looking at a tradeoff. With keeping that in mind, let’s take a look at some of the side-by-side numbers to compare them both a bit more concisely so that you can make a smart choice for your personal wants and needs: A standard 5.56 weighs between 55 and 77 grains, while the 300 BLK weighs between 110 and 125 grains. One of the biggest differences between the 5.56 NATO and 300 BLK is the weight of the bullets. Furthermore, because the cartridge base is so similar, both the bolt carrier and the bolt remain unchanged. The best part about the cartridges being virtually identical is that not much is needed to convert a regular AR-15 that’s chambered in 5.56mm to 300 BLK. To sum it up, the case dimensions and diameter of the case body are entirely identical, despite the bullets being very different in dimensions and weight. 223 Remington, the overall length is the same at 2.26”. Though the 300 blk is larger and heavier than the. 223 Remington, the brass case being expanded, reshaped at the mouth, and chopped-down in order to allow for the larger bullet. This is because the 300 BLK is basically a larger version of the. Given that the 300 BLK offers similar energies as the 7.62x39mm when fired from short-barreled rifles, the round is considered "barrier blind" in that it’s more than capable of penetrating through several inches of various types of hard targets, unlike the 9mm.Īs we mentioned earlier, the 300 blk fits into standard AR magazines, such as the stanag, pmag, or AWM. Additionally, 5.56 subsonic ammunition’s capabilities are limited in night operations and CQB scenarios as the round is still quite loud, hitting anywhere between 135-145 decibels, well above its 9mm subsonic relative. Though the 5.56 has many advantages, such as allowing a soldier to carry roughly 3 times as much ammunition as its 7.62 counterpart (a serious consideration in warfare), it lacks in terminal performance when compared to the 7.62x39mm, especially when fired from short-barrel rifles. Accomplish the above all while being fired from the AR platform.Allow maximum capacity in standard AR magazines, and. ![]() Maintain similar decibel levels of a subsonic 9mm round when fired from a suppressor.Achieve similar terminal performance of the 7.62x39mm round, especially when fired from pistols/short-barreled rifles.300 Blackout vs 5.56 NATO: What’s the Difference?įirstly, to understand the differences between these two calibers we must first understand why the. We will then go on to explore how these calibers work for different platforms in order to assist you in making your decision. To start, let’s look at some of the distinguishing differences between the 300 BLK and the 5.56 NATO. Here, we will be delving into these two different options, both of which you should take the time to check out before making a decision. 300 Blackout or the 5.56 NATO is going to be a good fit, and you just are not quite sure where to start, you have come to the right place. If you have found yourself questioning if perhaps the. Choosing the best ammo for your needs may seem like a daunting task unless you know what you’re looking for.
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