Ian
Notorious member
Got back from a trip late last night and had a few minutes this evening to put together a test load for my new AR Frankenrifle. Brass is a handful of home-made stuff courtesy of L1A1Rocker, I have some factory-new Federal stuff on order. After managing to dumb-down the alloy enough to make NOE 247 Whisper bullets cast small enough on the nose to fit my SAAMI-minimum Blackout chamber, I loaded five with ten grains of H4198 and headed to the range with my Mageto-Speed chronograph. Shot them into one hole at 15 yards but had a little yawing going on. I think the points all went through the same hole but the bases made it about 3/8" total diameter with daisy-petal marks radiating around. Velocity was average 1002 fps with a horrific SD of 23.4. This load would neither lock back the bolt nor feed the next round, but ejected empties just fine (carbine-length gas system, 16" barrel, no silencer).
I'm probably going to try 10.5 grains and maybe switch to Reloder 7 for a little more gas volume and hopefully some better consistency. One thing's for sure, I wouldn't want to shoot these yaw-riffic things through a can until I figure out how to make them fly straight. Any suggestions?
I'm probably going to try 10.5 grains and maybe switch to Reloder 7 for a little more gas volume and hopefully some better consistency. One thing's for sure, I wouldn't want to shoot these yaw-riffic things through a can until I figure out how to make them fly straight. Any suggestions?