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5.56 NATO / 5.56mm NATO (.223 Remington) Semiauto |
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| Warning! Notes: Tested in an AR-15 with 7-inch twist. Groups are an average of five 10-round groups at 200 yards. All loads used WCC cases with Remington 7 1/2 primers; overall cartridge length was 2.26 inches. Velocities instrumental at 15 feet. (Handloader Issue 139) |
| Be Alert: Publisher cannot be responsible for errors in published load data. |
| Wt. | Bullet | Powder Manufacturer | Powder | Charge | Velocity (FPS) | |
| 52 | Sierra MatchKing | Hodgdon | H-4198 | Subscribe | 3,096 | |
| Remarks: group: (inches): 3.06 | ||||||
| 52 | Sierra MatchKing | Winchester | W-748 | Subscribe | 3,161 | |
| Remarks: group: (inches): 3.89 | ||||||
| 52 | Sierra MatchKing | Hodgdon | H-322 | Subscribe | 3,033 | |
| Remarks: group: (inches): 3.90 | ||||||
| 55 | Midway FMJBT | Hodgdon | H-4198 | Subscribe | 2,950 | |
| Remarks: group: (inches): 5.48 | ||||||
| 55 | Midway FMJBT | Hodgdon | H-4198 | Subscribe | 3,052 | |
| Remarks: group: (inches): 5.57 | ||||||
| 55 | Midway FMJBT | Hodgdon | H-322 | Subscribe | 2,927 | |
| Remarks: group: (inches): 5.59 | ||||||
| 55 | Midway FMJBT | Hodgdon | H-335 | Subscribe | 3,126 | |
| Remarks: group: (inches): 6.57 | ||||||