Load data for .257 Roberts + 100gr Speer Varmint Hollow Point

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.

100gr Speer Varmint Hollow Point bullet image

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 | 100gr | Varmint Hollow Point

Cartridge:.257 Roberts load data

Case Length (L3):2.233" | 56.7 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.433" | 11.0 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:1:12.0

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Community Loads for .257 Roberts + 100gr Speer Varmint Hollow 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	2.760"	—	2798 fps	•••

41.3 gr	2.760"	—	2832 fps	•••
44.8 gr	2.760"	24.0"	3057 fps	•••
•••	2.760"	—	3119 fps	•••

•••	2.760"	—	2822 fps	•••
•••	2.760"	—	3021 fps	•••

•••	2.760"	—	2819 fps	•••
•••	2.760"	—	3069 fps	•••

•••	2.760"	—	2698 fps	•••
•••	2.760"	—	3000 fps	•••

•••	2.760"	—	2935 fps	•••

•••	2.760"	—	2651 fps	•••
•••	2.760"	—	2903 fps	•••

•••	2.760"	—	2912 fps	•••

•••	2.760"	—	2760 fps	•••
•••	2.760"	—	3016 fps	•••

•••	2.760"	—	2880 fps	•••

•••	2.760"	—	2691 fps	•••
•••	2.760"	—	2934 fps	•••

•••	2.760"	—	2885 fps	•••

•••	2.760"	—	2885 fps	•••
•••	2.760"	—	3058 fps	•••

•••	2.760"	—	2713 fps	•••
•••	2.760"	—	2967 fps	•••

•••	2.760"	—	2826 fps	•••
•••	2.760"	—	2839 fps	•••
•••	2.760"	—	3132 fps	•••
•••	2.760"	—	2792 fps	•••
•••	2.760"	—	3064 fps	•••

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