Load data for 5.56 x 45 NATO + 55gr Sellier & Bellot SP
291 suitable loads across 48 powder(s) for cartridge 5.56 x 45 NATO with 55gr Sellier & Bellot SP bullet.
The most recommended powders for this combination are ADI AR 2219, ADI AR 2207 and Norma 200.
Based on NATO EPVAT, the max. allowed case length is 1.760 in / 44.70 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Based on NATO EPVAT, the max. allowed case length is 1.760 in / 44.70 mm, the max. cartridge length is 2.260 in / 57.40 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.
Load Specifications
ImperialMetric
Bullet:.224 | 55gr | SP
Cartridge:5.56 x 45 NATO load data
Case Length (L3):1.759" | 44.7 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.285" | 7.2 mm
Case Capacity:30 gow | 1.94 cm³
Primer Size:Small Rifle (SR)
Max. Pressure (NATO EPVAT):62,366 psi | 4,300 bar
Barrel Length:20.0" | 508 mm
Min. Twist Rate:1:11.5
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