I found some commercial manufactures (mostly off the record) either discontinued bolt guns in 300 BLK, pulled them from the market after the product was announced, or declined to introduce them due to accuracy and feeding concerns. Prior to building a custom bolt action rifle in 300 BLK I did a lot of homework on loads and load development. Keep in mind that the benchrest crowd, the hot-rodders of this sport, feel the best accuracy is on the edge of stabilization. This can lead to poor accuracy from lighter loads. If you aren’t worried about being on the cutting edge of accuracy, the fast twist needed to stabilize the heavier bullets, means you are spinning the lighter loads way too fast. The ability to shoot a wide range of bullets is a mixed blessing. On some guns, the short case can simply snap out from under the extractor if using a constant tension spring type ejector. The short case length doesn’t necessarily effect feeding, since the bullet of the loaded cartridge is similar in length to the 223 Remington, but it can make ejection difficult from many bolt action rifles. ![]() The two key features that make the 300 BLK excellent for the AR platform, make it difficult to work with in a bolt action rifle a short case and use of both super and subsonic bullets. Known for its ability to deliver heavy subsonic bullets for standard AR magazines while cycling the action in suppressed applications, it also works well with lighter supersonic loads, offering a similar external ballistic performance to the 7.62x39mm Russian ( check out my 300 AAC Blackout Review from September 2012).Ī few manufacturers offer bolt action rifles chambered in the 300 BLK. Frankly any emphasis on boutique subsonic bullets is a lost cause in my book.The 300 AAC Blackout (300 BLK) is a popular alternative cartridge in the AR-15/M16 M4 (AR) community. Short range lethality in a compact package with ergonomic controls. It makes the best sense in something along the size of an MP5, such as the Sig Rattler. Marketing has been focused on subsonic range toy bull shit guns as big as the same made more effective with 5.56. It's slow, the bullet selection is small, and it takes up the space of a 5.56 gun. TAC-TX are at least 70 cents typically.ģ00 Blackout is a very niche cartridge that the gun media has masqueraded as some do-it-all wonder pony. Plus they're usually between 20 to 30 cents apiece in today's market. The Nosler Varmageddon and Hornady VMAX 110 gr projectiles will achieve the same velocity as the 110 TAC-TX, and offer excellent expansion and acceptable penetration. Quality 300 Blackout projectiles are indeed quite limited, but you don't need to buy the 110 or 120 TAC-TX exclusively. Both hit, but only one is going to act like a rifle round. This is one of the main differences in a hunting cartridge versus a target cartridge at distance. High velocity (2200+ FPS) bullets will turn organs like the liver and heart into a jelly during field dressing. Albeit it doesn't do a lot, and with the already slow speed of 300 Blackout the engagement range must be short since most light. Meanwhile lower weight 110-120 gr bullets moving fast enough will exceed some tissue elasticity with their hydrostatic shock during expansion/fragmentation, and yield not only a permanent crush cavity but the disruption of nearby tissue through liquification. ![]() Click to expand.The subsonic projectiles are all at the best a slow expanding bullet that has to entirely rely upon permanent cavity and penetration depth for wounding.
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