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5.56 NATO / 5.56mm NATO (.223 Remington) Semiauto Reloading Data

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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)
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Wt. Bullet Powder Manufacturer Powder Charge Velocity (FPS)
52 Sierra MatchKing Hodgdon H-4198 Click Here 3,096
52 Sierra MatchKing Winchester W-748 Click Here 3,161
52 Sierra MatchKing Hodgdon H-322 Click Here 3,033
55 Midway FMJBT Hodgdon H-4198 Click Here 2,950
55 Midway FMJBT Hodgdon H-4198 Click Here 3,052
55 Midway FMJBT Hodgdon H-322 Click Here 2,927
55 Midway FMJBT Hodgdon H-335 Click Here 3,126

5.56mm Caliber Reloading Data