| LoadID | 4449 |
| Bullet | Sierra HPBT |
| Bullet Weight | 135 grs |
| Powder | W296 |
| Powder Weight | 18.5 grs |
| Primer | Wnchester small rifle |
| Brass Make | Mixed |
| Barrel Length | 16 (inches) |
| C.O.L | 2.121 (inches) |
| Velocity | 2190 fps |
| Group 100 yds | <1.0 (inches) |
| Submitted By | BDT |
| Gun Info | Ar15 16-in Noveske barrel. 0.083 in gas port in the pistol position |
| Comment | This is listed as Max. load in the Sierra Reloading manual. 1900 fps in a 10-inch barrel, C.O.L. 2.100 |