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Load data for .257 Ackley Improved + 70gr Sierra Tipped VarmintKing

339 suitable loads across 68 powder(s) for cartridge .257 Ackley Improved with 70gr Sierra Tipped VarmintKing bullet.

The most recommended powders for this combination are ReloadSwiss RS 60, Vihtavuori N150 and SNPE Vectan Tubal 5000.

.257 Ackley Improved cartridge with combo bulletSeated DepthL3 = 2.333 in / 59.26 mmL6 = 2.775 in / 70.48 mmSeated Depth = .432 in / 10.97 mm

Based on Wildcat, 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 48,200 PSI / 3,323 bar.

70gr Sierra Tipped VarmintKing bullet image

Load Specifications

ImperialMetric
Bullet:.257 | 70gr | Tipped VarmintKing
Cartridge:.257 Ackley Improved load data
Case Length (L3):2.333" | 59.3 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.394" | 10.0 mm
Case Capacity:63 gow | 4.08 cm³
Primer Size:Large Rifle (LR)
Max. Pressure (Wildcat):48,200 psi | 3,323 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:11.5

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Community Loads for .257 Ackley Improved + 70gr Sierra Tipped VarmintKing

Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.

PowderCharge (gr)C.O.L.Barrel LengthVelocity (fps)Pressure (psi)

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