Load data for .257 Roberts + 80gr Barnes TTSX BT

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.

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 | 80gr | TTSX BT

Cartridge:.257 Roberts load data

Case Length (L3):2.233" | 56.7 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.440" | 11.2 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:1:10.5

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Community Loads for .257 Roberts + 80gr Barnes TTSX BT

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)

45.4 gr	2.780"	24.0"	3165 fps	•••

43.0 gr	2.830"	24.0"	2908 fps	•••
47.0 gr	2.830"	24.0"	3220 fps	•••

•••	2.830"	24.0"	3067 fps	•••

•••	2.830"	24.0"	2928 fps	•••
•••	2.830"	24.0"	3177 fps	•••

•••	2.780"	24.0"	3139 fps	•••

•••	2.830"	24.0"	2906 fps	•••
•••	2.830"	24.0"	3173 fps	•••

•••	2.780"	24.0"	3095 fps	•••
•••	2.780"	24.0"	3295 fps	•••

•••	2.830"	24.0"	2861 fps	•••
•••	2.780"	24.0"	3095 fps	•••
•••	2.830"	24.0"	3124 fps	•••

•••	2.780"	24.0"	3198 fps	•••

•••	2.830"	24.0"	2966 fps	•••
•••	2.780"	24.0"	3111 fps	•••
•••	2.830"	24.0"	3239 fps	•••

•••	2.780"	24.0"	3075 fps	•••
•••	2.780"	24.0"	3275 fps	•••
•••	2.780"	24.0"	3357 fps	•••

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