Load data for .338 Federal + 250gr Sierra GameKing

511 suitable loads across 85 powder(s) for cartridge .338 Federal with 250gr Sierra GameKing bullet.

The most recommended powders for this combination are Hodgdon CFE223, Alliant Power Pro 1200-R and Somchem S321.

Based on C.I.P., the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.820 in / 71.63 mm, and the max. allowed pressure is 60,191 PSI / 4,150 bar.

Based on C.I.P., the max. allowed case length is 2.015 in / 51.18 mm, the max. cartridge length is 2.820 in / 71.63 mm, and the max. allowed pressure is 60,191 PSI / 4,150 bar.

Load Specifications

ImperialMetric

Bullet:.338 | 250gr | GameKing

Cartridge:.338 Federal load data

Case Length (L3):2.014" | 51.2 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.671" | 17.1 mm

Case Capacity:57.5 gow | 3.73 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (C.I.P.):60,191 psi | 4,150 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:14.0

Get PRO license to unlock all data and calculators

Community Loads for .338 Federal + 250gr Sierra GameKing

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)

35.5 gr	2.820"	24.0"	1981 fps	•••
37.2 gr	2.820"	24.0"	2060 fps	•••
39.0 gr	2.820"	24.0"	2141 fps	•••
•••	2.820"	24.0"	2226 fps	•••

•••	2.820"	24.0"	1996 fps	•••
•••	2.820"	24.0"	2081 fps	•••
•••	2.820"	24.0"	2174 fps	•••
•••	2.820"	24.0"	2266 fps	•••

•••	2.820"	24.0"	2091 fps	•••
•••	2.820"	24.0"	2184 fps	•••
•••	2.820"	24.0"	2284 fps	•••

•••	2.820"	24.0"	2054 fps	•••
•••	2.820"	24.0"	2153 fps	•••
•••	2.820"	24.0"	2251 fps	•••

•••	2.820"	24.0"	2072 fps	•••
•••	2.820"	24.0"	2175 fps	•••

•••	2.820"	24.0"	1946 fps	•••
•••	2.820"	24.0"	2046 fps	•••
•••	2.820"	24.0"	2144 fps	•••
•••	2.820"	24.0"	2240 fps	•••

•••	2.820"	24.0"	2026 fps	•••
•••	2.820"	24.0"	2114 fps	•••
•••	2.820"	24.0"	2210 fps	•••
•••	2.820"	24.0"	2311 fps	•••

•••	2.820"	24.0"	1865 fps	•••
•••	2.820"	24.0"	1968 fps	•••
•••	2.820"	24.0"	2066 fps	•••
•••	2.820"	24.0"	2157 fps	•••

•••	2.820"	24.0"	1823 fps	•••
•••	2.820"	24.0"	1918 fps	•••
•••	2.820"	24.0"	2010 fps	•••

•••	2.820"	24.0"	1946 fps	•••
•••	2.820"	24.0"	2045 fps	•••
•••	2.820"	24.0"	2146 fps	•••
•••	2.820"	24.0"	2239 fps	•••

•••	2.820"	24.0"	1974 fps	•••
•••	2.820"	24.0"	2060 fps	•••
•••	2.820"	24.0"	2155 fps	•••
•••	2.820"	24.0"	2254 fps	•••

•••	2.820"	24.0"	1955 fps	•••
•••	2.820"	24.0"	2060 fps	•••
•••	2.820"	24.0"	2164 fps	•••
•••	2.820"	24.0"	2269 fps	•••

•••	2.820"	24.0"	2022 fps	•••
•••	2.820"	24.0"	2104 fps	•••
•••	2.820"	24.0"	2193 fps	•••

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