300 Blackout tonight. I am relatively new to this caliber. I recently got a great deal on a new Rock River Arms AR15 in this caliber with a medium heavy 16" barrel and free float handguard. I put a 4.5-14x Leupold mil dot scope on it and started loading ammo.
The brass is shortend .223 Rem/.556 NATO brass necked to 30 caliber. I have used Sierra and Hornady jacketed bullets in weights from 110 to 220 grains, some with great accuracy. I have also used some surplus 150 grain FMJ bullets that shot well.
I have played around with some sub-sonic loads.
Now I have started casting 230 grain bullets for it from a Lee mold, and then powder coating (which is totally new for me). I tried 5 last night in my basement and they cycled the rifle fine, at approximately 1000 fps. I hope to try them at longer range soon.
|