Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 64gr | Reichenberg Spezial Jagd bullet and 15 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Norma 200 and Vihtavuori N120.
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% | 39,102 psi | 84% | 2454 fps | 96.4% |
| ADI AR 2207 | <<locked>> | 94% | 39,784 psi | 86% | 2569 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 38,696 psi | 83% | 2566 fps | 96.7% |
| Alliant Reloder-7 | <<locked>> | 92% | 40,016 psi | 86% | 2523 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,805 psi | 62% | 1588 fps | 100% |
| IMR 4198 | <<locked>> | 98% | 40,698 psi | 88% | 2539 fps | 97.8% |
| IMR 4227 | <<locked>> | 86% | 40,016 psi | 86% | 2474 fps | 98.9% |
| Lovex S053 | <<locked>> | 88% | 40,654 psi | 88% | 2484 fps | 100% |
| Norma 200 | <<locked>> | 98% | 41,756 psi | 90% | 2612 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,935 psi | 62% | 1640 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 40,814 psi | 88% | 2533 fps | 98.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 41,814 psi | 90% | 2375 fps | 100% |
| Vihtavuori N110 | <<locked>> | 82% | 40,582 psi | 87% | 2421 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 40,030 psi | 86% | 2536 fps | 100% |
| Vihtavuori N130ᴾ | <<locked>> | 100% | 38,450 psi | 83% | 2490 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>> | 86% | 36,883 psi | 79% | 2415 fps | 95.8% |
| ADI AR 2207 | 12.3 gr | 80% | 25,657 psi | 55% | 2247 fps | 96.2% |
| Alliant Reloder-10x | <<locked>> | 96% | 34,301 psi | 74% | 2477 fps | 95.4% |
| Alliant Reloder-7 | <<locked>> | 86% | 33,011 psi | 71% | 2379 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,031 psi | 45% | 1421 fps | 100% |
| IMR 4198 | <<locked>> | 90% | 32,474 psi | 70% | 2362 fps | 95.3% |
| IMR 4227 | <<locked>> | 80% | 33,373 psi | 72% | 2339 fps | 97.4% |
| Lovex S053 | <<locked>> | 80% | 32,097 psi | 69% | 2320 fps | 99.5% |
| Norma 200 | 14.5 gr | 90% | 32,372 psi | 70% | 2425 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,755 psi | 45% | 1457 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 31,734 psi | 68% | 2346 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 30,414 psi | 66% | 2178 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 38,130 psi | 82% | 2382 fps | 100% |
| Vihtavuori N120 | 12.3 gr | 80% | 26,034 psi | 56% | 2231 fps | 97.5% |
| Vihtavuori N130 | <<locked>> | 98% | 36,318 psi | 78% | 2448 fps | 95.5% |
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 | 64gr | Reichenberg Spezial Jagd. Norma 200 delivers the highest muzzle velocity at 2,612 fps; across all powders the maximum-charge window runs from 1,588 fps to 2,612 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 64.0 gr projectile in 0.224" calls for a 1:10.5 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. ADI AR 2207, Norma 200, Vihtavuori N120 rank at the top here: for .221 Rem. Fireball with the .224 | 64gr | Reichenberg Spezial Jagd 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.