I understand 9mm subsonic loads but havent delved into any rifle loads yet. It is intended ONLY for barrels up to 14½".it occasionally sticks in the barrel of a 16" carbine. Ive got a can that should be outta NFA jail sometime soon ( hopefully ) so Im doing my homework on subsonic loads. 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. Burn rates range from IMR 4198 (fastest) to CFE 223 (slowest).
Hodgdon offers more than a dozen different propellants for reloading 223/5.56 ammo. handloads, and faster-burning powders like HP38 and Trail Boss can be used for low-velocity specialty loads. 223 Rem with 55 gr NBT and 4 gr TB for 1065 fps.30/30 Win with 160 H-FTX and 7.5. Several Hodgdon, IMR, and Winchester powders are appropriate for full-power 223 Rem. in this thread in this sub-forum in the entire site. 300 BLK went to the range with me one afternoon and left with another. Accuracy is adequate for it's intended mission out to 100m or so.īullet is filled with Tungsten carbide- so not cheep. 300 Whisper/Black out craze got me interested in centerfire subsonic loads. 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. 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.