Load data for .243 WSSM + 105gr Lapua Naturalis

597 suitable loads across 102 powder(s) for cartridge .243 WSSM with 105gr Lapua Naturalis bullet.

The most recommended powders for this combination are ReloadSwiss RS 70, Hodgdon Superformance and ReloadSwiss RS 60.

Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Based on C.I.P., the max. allowed case length is 1.670 in / 42.42 mm, the max. cartridge length is 2.360 in / 59.94 mm, and the max. allowed pressure is 63,817 PSI / 4,400 bar.

Load Specifications

ImperialMetric

Bullet:.243 | 105gr | Naturalis

Cartridge:.243 WSSM load data

Case Length (L3):1.663" | 42.2 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.388" | 9.9 mm

Case Capacity:53.9 gow | 3.49 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (C.I.P.):63,817 psi | 4,400 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:10.5

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Community Loads for .243 WSSM + 105gr Lapua Naturalis

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)

35.8 gr	2.283"	27.0"	2857 fps	•••
41.1 gr	2.283"	27.0"	3172 fps	•••

41.4 gr	2.283"	27.0"	3226 fps	•••

•••	2.283"	27.0"	2976 fps	•••
•••	2.283"	27.0"	3247 fps	•••

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