Load data for .22-250 Ackley Improved + 77gr Sierra HPBT MatchKing

Based on Wildcat, the max. allowed case length is 1.908 in / 48.46 mm, the max. cartridge length is 2.350 in / 59.69 mm, and the max. allowed pressure is 57,986 PSI / 3,998 bar.

Based on Wildcat, the max. allowed case length is 1.908 in / 48.46 mm, the max. cartridge length is 2.350 in / 59.69 mm, and the max. allowed pressure is 57,986 PSI / 3,998 bar.

Load Specifications

ImperialMetric

Bullet:.224 | 77gr | HPBT MatchKing

Cartridge:.22-250 Ackley Improved load data

Case Length (L3):1.940" | 49.3 mm

Cartridge Length (COL/L6):•••

Seated Depth:0.444" | 11.3 mm

Case Capacity:46.9 gow | 3.04 cm³

Primer Size:Large Rifle (LR)

Max. Pressure (Wildcat):57,986 psi | 3,998 bar

Barrel Length:24.0" | 610 mm

Min. Twist Rate:1:9.0

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Community Loads for .22-250 Ackley Improved + 77gr Sierra HPBT MatchKing

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)

33.0 gr	2.500"	24.0"	3038 fps	•••

32.1 gr	2.500"	24.0"	2798 fps	•••
33.8 gr	2.500"	24.0"	2935 fps	•••
•••	2.500"	24.0"	3062 fps	•••
•••	2.500"	24.0"	3115 fps	•••

•••	2.500"	24.0"	2976 fps	•••
•••	2.500"	24.0"	3038 fps	•••

•••	2.500"	24.0"	2806 fps	•••
•••	2.500"	24.0"	2937 fps	•••
•••	2.500"	24.0"	3069 fps	•••
•••	2.500"	24.0"	3141 fps	•••
•••	2.500"	24.0"	3203 fps	•••

•••	2.500"	24.0"	2970 fps	•••

•••	2.500"	24.0"	2996 fps	•••

•••	2.500"	24.0"	3033 fps	•••
•••	2.500"	24.0"	3081 fps	•••

•••	2.500"	24.0"	2951 fps	•••

•••	2.500"	24.0"	2813 fps	•••
•••	2.500"	24.0"	2933 fps	•••
•••	2.500"	24.0"	3044 fps	•••
•••	2.500"	24.0"	3155 fps	•••

•••	2.500"	24.0"	2967 fps	•••
•••	2.500"	24.0"	3077 fps	•••

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