I searched a bit in forums to find an answer and maybe I missed something. I started casting about some months back and probably will forever be experimenting. I have WW CF-1 .223/5.56 1:8 twist AR and want to shoot 55 gr hard lead (about 22 BH). I do powder coat twice. My question(s) is: Is resizing necessary? GC's? And can anyone tell me what the starting load would be using H335? Yes, I know there's a possibility of leading both barrel and gas tube.