Load data for .257 Roberts + 120gr Speer Deep Curl Soft Point

373 suitable loads across 68 powder(s) for cartridge .257 Roberts with 120gr Speer Deep Curl Soft Point bullet.

The most recommended powders for this combination are Alliant Reloder-26, Norma MRP and Alliant Reloder-16.

Based on C.I.P., the max. allowed case length is 2.233 in / 56.72 mm, the max. cartridge length is 2.775 in / 70.49 mm, and the max. allowed pressure is 51,488 PSI / 3,550 bar.

Load Specifications

ImperialMetric

Bullet:.257 | 120gr | Deep Curl Soft Point

Cartridge:.257 Roberts load data

Case Length (L3):2.233" | 56.7 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.590" | 15.0 mm

Case Capacity:58 gow | 3.76 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (C.I.P.):51,488 psi | 3,550 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:11.0

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Community Loads for .257 Roberts + 120gr Speer Deep Curl Soft Point

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)

41.0 gr	2.775"	22.0"	2694 fps	•••

41.0 gr	2.775"	22.0"	2602 fps	•••

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