Load data for .221 Rem. Fireball + 55gr Sierra GameKing
Based on C.I.P., the max. allowed case length is 1.400 in / 35.56 mm, the max. cartridge length is 1.830 in / 46.48 mm, and the max. allowed pressure is 46,412 PSI / 3,200 bar.
Based on C.I.P., the max. allowed case length is 1.400 in / 35.56 mm, the max. cartridge length is 1.830 in / 46.48 mm, and the max. allowed pressure is 46,412 PSI / 3,200 bar.
Load Specifications
ImperialMetric
Bullet:.224 | 55gr | GameKing
Cartridge:.221 Rem. Fireball load data
Case Length (L3):1.397" | 35.5 mm
Cartridge Length (COL/L6):•••
Seated Depth:0.305" | 7.7 mm
Case Capacity:22 gow | 1.43 cm³
Primer Size:Small Rifle (SR)
Max. Pressure (C.I.P.):46,412 psi | 3,200 bar
Barrel Length:24.0" | 610 mm
Min. Twist Rate:1:11.5
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Community Loads for .221 Rem. Fireball + 55gr Sierra GameKing
Real loads for this combination shared by our community. Charge weights are only fully visible with an active Pro licence.
| Powder | Charge (gr) | C.O.L. | Barrel Length | Velocity (fps) | Pressure (psi) |
|---|---|---|---|---|---|
| 15.3 gr | 1.830" | 20.0" | 2397 fps | ••• | |
| 15.9 gr | 1.830" | 20.0" | 2480 fps | ••• | |
| 16.5 gr | 1.830" | 20.0" | 2563 fps | ••• | |
| ••• | 1.830" | 20.0" | 2646 fps | ••• | |
| ••• | 1.830" | 20.0" | 2545 fps | ••• | |
| ••• | 1.830" | 20.0" | 2632 fps | ••• | |
| ••• | 1.830" | 20.0" | 2552 fps | ••• | |
| ••• | 1.830" | 20.0" | 2623 fps | ••• | |
| ••• | 1.830" | 20.0" | 2694 fps | ••• | |
| ••• | 1.830" | 20.0" | 2661 fps | ••• | |
| ••• | 1.830" | 20.0" | 2735 fps | ••• | |
| ••• | 1.830" | 20.0" | 2468 fps | ••• | |
| ••• | 1.830" | 20.0" | 2554 fps | ••• | |
| ••• | 1.830" | 20.0" | 2640 fps | ••• | |
| ••• | 1.830" | 20.0" | 2448 fps | ••• | |
| ••• | 1.830" | 20.0" | 2517 fps | ••• | |
| ••• | 1.830" | 20.0" | 2589 fps | ••• | |
| ••• | 1.830" | 20.0" | 2659 fps | ••• | |
| ••• | 1.830" | 20.0" | 2730 fps | ••• | |
| ••• | 1.830" | 20.0" | 2481 fps | ••• | |
| ••• | 1.830" | 20.0" | 2557 fps | ••• | |
| ••• | 1.830" | 20.0" | 2631 fps | ••• | |
| ••• | 1.830" | 20.0" | 2703 fps | ••• | |
Charge weights beyond the first rows and all pressure values are only visible with an active Pro licence.