Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 62gr | Nosler Bonded Solid Base bullet and 14 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>> | 90% | 41,727 psi | 90% | 2546 fps | 96.8% |
| ADI AR 2207 | <<locked>> | 96% | 41,785 psi | 90% | 2651 fps | 99.7% |
| Alliant Reloder-10xᴾ | <<locked>> | 100% | 38,174 psi | 82% | 2598 fps | 96.3% |
| Alliant Reloder-7 | <<locked>> | 94% | 41,916 psi | 90% | 2598 fps | 97.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,906 psi | 62% | 1624 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,945 psi | 90% | 2605 fps | 97.9% |
| IMR 4227 | <<locked>> | 88% | 41,408 psi | 89% | 2543 fps | 98.9% |
| Lovex S053 | <<locked>> | 88% | 40,451 psi | 87% | 2526 fps | 100% |
| Norma 200 | <<locked>> | 98% | 41,205 psi | 89% | 2644 fps | 97.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,311 psi | 61% | 1660 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 40,495 psi | 87% | 2569 fps | 98.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 41,756 psi | 90% | 2418 fps | 100% |
| Vihtavuori N110 | <<locked>> | 82% | 39,726 psi | 86% | 2454 fps | 100% |
| Vihtavuori N120 | <<locked>> | 94% | 38,943 psi | 84% | 2562 fps | 99.9% |
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% | 36,550 psi | 79% | 2448 fps | 95.4% |
| ADI AR 2207 | 12.5 gr | 80% | 25,556 psi | 55% | 2283 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 98% | 35,984 psi | 78% | 2556 fps | 95.6% |
| Alliant Reloder-7 | <<locked>> | 88% | 34,650 psi | 75% | 2457 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 21,234 psi | 46% | 1453 fps | 100% |
| IMR 4198 | <<locked>> | 92% | 33,562 psi | 72% | 2428 fps | 95.4% |
| IMR 4227 | <<locked>> | 80% | 32,663 psi | 70% | 2365 fps | 96.9% |
| Lovex S053 | <<locked>> | 80% | 32,039 psi | 69% | 2359 fps | 99.4% |
| Norma 200 | 14.7 gr | 90% | 31,981 psi | 69% | 2457 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,914 psi | 45% | 1490 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 31,546 psi | 68% | 2382 fps | 96.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 29,834 psi | 64% | 2208 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 37,347 psi | 80% | 2415 fps | 100% |
| Vihtavuori N120 | 12.5 gr | 80% | 25,947 psi | 56% | 2264 fps | 97.2% |
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 14 powders for .221 Rem. Fireball loaded with the .224 | 62gr | Nosler Bonded Solid Base. ADI AR 2207 delivers the highest muzzle velocity at 2,651 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,651 fps. Alliant Reloder-10x gives the best case fill at 100 %, and 14 of the 14 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 62.0 gr projectile in 0.224" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-10x, Hodgdon TrailBoss, IMR 4198 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 | 62gr | Nosler Bonded Solid Base 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.