Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 62gr | Norma RN bullet and 15 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma 200, ADI AR 2207 and Alliant Reloder-7.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 88% | 40,103 psi | 86% | 2533 fps | 96.7% |
| ADI AR 2207 | <<locked>> | 94% | 40,350 psi | 87% | 2641 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 39,769 psi | 86% | 2644 fps | 97% |
| Alliant Reloder-7 | <<locked>> | 92% | 40,480 psi | 87% | 2589 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 29,370 psi | 63% | 1644 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 41,191 psi | 89% | 2608 fps | 98% |
| IMR 4227 | <<locked>> | 86% | 40,074 psi | 86% | 2536 fps | 98.9% |
| Lovex S053 | <<locked>> | 88% | 41,539 psi | 90% | 2559 fps | 100% |
| Norma 200 | <<locked>> | 96% | 39,653 psi | 85% | 2635 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,776 psi | 62% | 1680 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 41,495 psi | 89% | 2602 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 90% | 40,553 psi | 87% | 2415 fps | 100% |
| Vihtavuori N110 | <<locked>> | 82% | 41,176 psi | 89% | 2490 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 40,640 psi | 88% | 2605 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,696 psi | 83% | 2552 fps | 96.2% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 1680 | <<locked>> | 84% | 35,244 psi | 76% | 2438 fps | 95.3% |
| ADI AR 2207 | 12.8 gr | 80% | 25,918 psi | 56% | 2310 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 96% | 35,404 psi | 76% | 2559 fps | 95.7% |
| Alliant Reloder-7 | 14.3 gr | 86% | 33,649 psi | 73% | 2451 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,176 psi | 46% | 1463 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 33,141 psi | 71% | 2434 fps | 95.6% |
| IMR 4227 | <<locked>> | 80% | 33,707 psi | 73% | 2405 fps | 97.5% |
| Lovex S053 | <<locked>> | 80% | 32,489 psi | 70% | 2382 fps | 99.5% |
| Norma 200 | 14.8 gr | 88% | 31,082 psi | 67% | 2448 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,885 psi | 45% | 1499 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 32,518 psi | 70% | 2421 fps | 97% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 31,053 psi | 67% | 2247 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,754 psi | 84% | 2451 fps | 100% |
| Vihtavuori N120 | <<locked>> | 80% | 26,310 psi | 57% | 2290 fps | 97.6% |
| Vihtavuori N130 | <<locked>> | 98% | 36,637 psi | 79% | 2510 fps | 95.6% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 15 powders for .221 Rem. Fireball loaded with the .224 | 62gr | Norma RN. Alliant Reloder-10x delivers the highest muzzle velocity at 2,644 fps; across all powders the maximum-charge window runs from 1,644 fps to 2,644 fps. Alliant Reloder-10x gives the best case fill at 100 %, and 15 of the 15 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 62.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-10x, Hodgdon TrailBoss, ReloadSwiss RS 14 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Norma 200, ADI AR 2207, Alliant Reloder-7 rank at the top here: for .221 Rem. Fireball with the .224 | 62gr | Norma RN they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.