| LoadID | 7923 |
| Bullet | Sierra Matchking |
| Bullet Weight | 220 grs |
| Powder | Hodgdon 4198 |
| Powder Weight | 12 grs |
| Primer | CCI 450 Mag |
| Brass Make | Remington |
| Barrel Length | 9 (inches) |
| C.O.L | ? Magazine depth :) (inches) |
| Velocity | 1050 fps |
| Group 100 yds | .750-1" (inches) |
| Submitted By | Jd |
| Gun Info | PWS MK109 .300 Blackout |
| Comment | This load is very accurate and it cycles the action in my rifle with and without suppressor. Haven't chronographed but I know it's sub-sonic based on the noise when suppressed. 12.5-13 grains I started hearing super sonic cracks. No signs of pressure :) |