Load data for 9 x 21 + 121gr Hornady HAP
342 suitable loads across 53 powder(s) for cartridge 9 x 21 with 121gr Hornady HAP bullet.
The most recommended powders for this combination are ReloadSwiss RS 20, Alliant UNIQUE and Vihtavuori N340.
Based on C.I.P., the max. allowed case length is 0.833 in / 21.15 mm, the max. cartridge length is 1.171 in / 29.75 mm, and the max. allowed pressure is 34,084 PSI / 2,350 bar.
Based on C.I.P., the max. allowed case length is 0.833 in / 21.15 mm, the max. cartridge length is 1.171 in / 29.75 mm, and the max. allowed pressure is 34,084 PSI / 2,350 bar.
Load Specifications
ImperialMetric
Bullet:.356 | 121gr | HAP
Cartridge:9 x 21 load data
Case Length (L3):0.830" | 21.1 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.216" | 5.5 mm
Case Capacity:15.5 gow | 1.00 cm³
Primer Size:Small Pistol (SP)
Max. Pressure (C.I.P.):34,084 psi | 2,350 bar
Barrel Length:4.5" | 114 mm
Min. Twist Rate:Stabilizes in any common twist
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