Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 60gr | Nosler Partition bullet and 16 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, Vihtavuori N120 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>> | 90% | 40,248 psi | 87% | 2556 fps | 96% |
| ADI AR 2207 | <<locked>> | 96% | 40,103 psi | 86% | 2664 fps | 99.5% |
| Alliant Reloder-7 | <<locked>> | 94% | 40,408 psi | 87% | 2612 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,485 psi | 61% | 1647 fps | 100% |
| IMR 4198ᴾ | <<locked>> | 100% | 41,307 psi | 89% | 2631 fps | 97.4% |
| IMR 4227 | <<locked>> | 88% | 40,843 psi | 88% | 2575 fps | 98.6% |
| Lovex D060 | <<locked>> | 82% | 41,756 psi | 90% | 2605 fps | 97.3% |
| Lovex S053 | <<locked>> | 90% | 41,394 psi | 89% | 2585 fps | 100% |
| Norma 200 | <<locked>> | 98% | 40,219 psi | 87% | 2671 fps | 97.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 28,558 psi | 62% | 1699 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 88% | 39,102 psi | 84% | 2585 fps | 98.2% |
| Shooters World Buffalo Rifle | <<locked>> | 82% | 41,756 psi | 90% | 2605 fps | 97.3% |
| Shooters World SOCOM | <<locked>> | 82% | 41,452 psi | 89% | 2572 fps | 97.9% |
| SNPE Vectan BA6 1/2 | <<locked>> | 92% | 41,220 psi | 89% | 2454 fps | 100% |
| Vihtavuori N110 | <<locked>> | 84% | 41,727 psi | 90% | 2533 fps | 100% |
| Vihtavuori N120 | <<locked>> | 96% | 40,480 psi | 87% | 2631 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>> | 88% | 38,000 psi | 82% | 2513 fps | 95.4% |
| ADI AR 2207 | 12.8 gr | 82% | 26,136 psi | 56% | 2339 fps | 95.6% |
| Alliant Reloder-7 | 14.3 gr | 88% | 34,098 psi | 73% | 2484 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,914 psi | 45% | 1476 fps | 100% |
| IMR 4198 | <<locked>> | 94% | 34,969 psi | 75% | 2497 fps | 95.5% |
| IMR 4227 | <<locked>> | 80% | 32,256 psi | 70% | 2395 fps | 96.5% |
| Lovex D060 | <<locked>> | 80% | 39,494 psi | 85% | 2559 fps | 96.8% |
| Lovex S053 | <<locked>> | 80% | 30,966 psi | 67% | 2375 fps | 99% |
| Norma 200 | <<locked>> | 92% | 33,127 psi | 71% | 2523 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 20,581 psi | 44% | 1512 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 80% | 30,458 psi | 66% | 2395 fps | 95.7% |
| Shooters World Buffalo Rifle | <<locked>> | 80% | 39,494 psi | 85% | 2559 fps | 96.8% |
| Shooters World SOCOM | <<locked>> | 80% | 39,146 psi | 84% | 2530 fps | 97.5% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 29,530 psi | 64% | 2244 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 36,912 psi | 80% | 2451 fps | 100% |
| Vihtavuori N120 | 12.5 gr | 80% | 25,077 psi | 54% | 2277 fps | 96.4% |
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 16 powders for .221 Rem. Fireball loaded with the .224 | 60gr | Nosler Partition. Norma 200 delivers the highest muzzle velocity at 2,671 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,671 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 16 of the 16 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 60.0 gr projectile in 0.224" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Hodgdon TrailBoss, IMR 4198, 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, Vihtavuori N120, Alliant Reloder-7 rank at the top here: for .221 Rem. Fireball with the .224 | 60gr | Nosler Partition 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.