Load data for .300 Win. Mag. + 220gr Hornady InterLock RN

444 suitable loads across 73 powder(s) for cartridge .300 Win. Mag. with 220gr Hornady InterLock RN bullet.

The most recommended powders for this combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.

Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Based on C.I.P., the max. allowed case length is 2.620 in / 66.55 mm, the max. cartridge length is 3.340 in / 84.84 mm, and the max. allowed pressure is 62,366 PSI / 4,300 bar.

Load Specifications

ImperialMetric

Bullet:.308 | 220gr | InterLock RN

Cartridge:.300 Win. Mag. load data

Case Length (L3):2.620" | 66.5 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.566" | 14.4 mm

Case Capacity:90.5 gow | 5.86 cm³

Primer Size:Large Rifle Magnum (LRM)

Max. Pressure (C.I.P.):62,366 psi | 4,300 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:14.5

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Community Loads for .300 Win. Mag. + 220gr Hornady InterLock RN

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)

74.5 gr	3.330"	24.0"	2736 fps	•••
75.0 gr	3.330"	24.0"	2753 fps	•••
76.0 gr	3.330"	24.0"	2789 fps	•••

•••	3.330"	24.0"	2667 fps	•••

•••	3.330"	24.0"	2664 fps	•••

•••	3.307"	—	2453 fps	•••
•••	3.307"	—	2551 fps	•••

•••	3.307"	—	2474 fps	•••
•••	3.307"	—	2563 fps	•••
•••	3.307"	—	2782 fps	•••

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