Using a Thunderbeast 223P-1 suppressor on a 20 inch Colt HBAR Match barrel.
Want to try subsonic loads to see how quiet I can go. I have 77 gr Sierra MK, 62 gr military, and 55 gr FMJ military bullets available.
Basic powders I use are Varget and H 4895, and I stay with CCI 41 primers...