Load data for 5.56 x 45 NATO + 75gr RMR BTHP

428 suitable loads across 78 powder(s) for cartridge 5.56 x 45 NATO with 75gr RMR BTHP bullet.

The most recommended powders for this combination are Alliant Power Pro 1200-R, Vihtavuori N135 and Hodgdon H322.

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 | 75gr | BTHP

Cartridge:5.56 x 45 NATO load data

Case Length (L3):1.759" | 44.7 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.490" | 12.4 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:1:9.5

Get PRO license to unlock all data and calculators

Community Loads for 5.56 x 45 NATO + 75gr RMR BTHP

Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.

Charge (gr)	C.O.L.	Barrel Length	Velocity (fps)	Pressure (psi)

21.0 gr	2.250"	11.5"	2188 fps	•••
21.5 gr	2.250"	11.5"	2241 fps	•••
22.0 gr	2.250"	11.5"	2300 fps	•••

Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.