| LoadID | 6647 |
| Bullet | Sierra MatchKing |
| Bullet Weight | 142 grs |
| Powder | H-4831sc |
| Powder Weight | 45 grs |
| Primer | Winchester Large Rifle |
| Brass Make | Remington |
| Barrel Length | Krieger 30" 1/8 twist (inches) |
| C.O.L | .010 off lands (inches) |
| Velocity | 2730 fps |
| Group 100 yds | .25 (inches) |
| Submitted By | James Rawclifffe |
| Gun Info | Gilkes/Ross |
| Comment | Long Range competition load. Start 10% lower when working up a load. Bullet is still supersonic at 1K. |