![]() ![]() 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. Some of this is no doubt due to the small powder charges and low velocity of the load but it's still a nice bonus.The 300 AAC Blackout (300 BLK) is a popular alternative cartridge in the AR-15/M16 M4 (AR) community. There is practically no fouling in this thing - copper or carbon. One thing I have to comment on is how clean this Delta Arms barrel has remained. ![]() Even the 208 Amax with it's plastic tip is about equal to the 240SMK in length. After I obtained a sample Sierra 240MK bullet (thanks Aaron) I saw how these Hornady bullets were equal in length even though they were lighter. The main hurdle for me was lowering the velocity with these Hornady bullets. I've not really had the opportunity to test for accuracy yet only basic function testing at this point. The 225's with 1680 ran well and I loaded more at 10.2 to test on my next trip. = 2.210”Ĭycled but did not lock bolt with heavy 9mm buffer in CAR stocked lower.ĩ66, 927, 973, 993, 940, 942 FPS = 956 average C.O.A.L. Sorry but I don't know the specs on the 9mm buffer as it is not mine.ĩ36, 977, 995 FPS = 969 average C.O.A.L. These rounds would not cycle on a lower with an rifle size Enidine buffer so I switched to a CAR stocked lower running a 9mm heavy buffer. Using a PRI adjustable gas block opened up 3 out of 4 turns to full open. All loads fired in a Delta Company Arms 9" stainless steel 300BLK barrel with CAC9 can. 45 ACP data for 230g, for good 220g BLK subsonic data (boltguns) WITH ANY DATA, START BELOW THE PUBLISHED LOADS AND WORK UP TO THEM.ġ30g Hornady SP, 125g Sierra Pro Hunter 130G HORNADYġ50g corlok and other 150s of similar profileġ80g AP or Nosler ballistic tip, or similarįor use in Bolt actions, will not cycle AR Range (yds) Clicks up (¼) 10mph wind (¼) 20 mph (¼) 300 BLK, 130g Hornady SP 16” bbl, DCA,LLC ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |