![]() ![]() I do have a 1 to 7 twist rate barrel so not a problem there. I found anything lighter than that lost reliability. I load a 57 gr Hard cast, gas check bullet at 2500 and it will cycle reliably. ![]() I use magnum primers as I read somewhere that they help with reliable ignition with so little powder in the case. To load subsonic (under 1100 fps) you will be hard pressed to get enough gas to cycle the action. Rounds travel at 705 fps + or - 5 fps at 10 feet from the muzzle. It is intended ONLY for barrels up to 14½".it occasionally sticks in the barrel of a 16" carbine. 223 and 50-55gr bullets I would start at 4gr N310 and reduce the load until you're subsonic / happy with velocity. Because the shotgun powder is so small and light of a flake it fills the case about 1/3 full. This uses the same 100grn bullet but uses 8grns of powder and a small foam filler. Powder (25grns) looks like Vihavouri.ĮS also produce a round that will not cycle the action- different folks like different things. Accuracy is adequate for it's intended mission out to 100m or so.īullet is filled with Tungsten carbide- so not cheep. could you hunt with them Sure, its about shot placement. Thats over 3 times the weight so three times the energy. The 300 is shooting as much as a 240gr SMK at the same subsonic velocity as a. ![]() Has cycled reliably in all the rifles I have tried it in- 1960's vintage M16, Current M4, HK 416 and ruger Mini 14.īullet (on the new stuff) weighs 100grns (old was 127grn) which is marginal on stability. 223 if you have 8 twist or faster give trailboss a try, i think around 3-4grains, sounds silly but it really different powder. 223, it cant have as much energy as a 300BO. Out of 16" barrels like our test HK 416's.it is often just supersonic (1180fps) but a few civi spec 16 barrels it stays just below the speed of sound. It is designed to be subsonic in a mil spec 14½" barrel- it is. It works as advertised within a narrow window. ![]()
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