Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 52gr | Berger Target FB bullet and 35 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2207, ReloadSwiss RS 36 and Lovex S053.
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 |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 82% | 40,219 psi | 87% | 2674 fps | 99.7% |
| ADI AR 2205 | <<locked>> | 84% | 41,713 psi | 90% | 2697 fps | 99.8% |
| ADI AR 2205 | <<locked>> | 82% | 39,378 psi | 85% | 2654 fps | 99.6% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,887 psi | 90% | 2900 fps | 99% |
| ADI AR 2207 | <<locked>> | 98% | 40,364 psi | 87% | 2877 fps | 98.8% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 41,989 psi | 90% | 2900 fps | 99% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,833 psi | 60% | 1788 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,166 psi | 61% | 1791 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 28,094 psi | 61% | 1791 fps | 100% |
| IMR 4227 | <<locked>> | 90% | 40,640 psi | 88% | 2769 fps | 97.6% |
| IMR 4227 | <<locked>> | 90% | 40,654 psi | 88% | 2762 fps | 97.5% |
| IMR 4227 | <<locked>> | 90% | 40,524 psi | 87% | 2762 fps | 97.5% |
| Lovex S053 | <<locked>> | 92% | 41,800 psi | 90% | 2802 fps | 99.8% |
| Lovex S053 | <<locked>> | 92% | 41,031 psi | 88% | 2782 fps | 99.7% |
| Lovex S053 | <<locked>> | 92% | 40,944 psi | 88% | 2782 fps | 99.7% |
| Norma 200ᴾ | <<locked>> | 100% | 39,755 psi | 86% | 2861 fps | 95.9% |
| Norma 200ᴾ | <<locked>> | 100% | 39,015 psi | 84% | 2838 fps | 95.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,746 psi | 60% | 1841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,412 psi | 59% | 1831 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 27,369 psi | 59% | 1831 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 39,044 psi | 84% | 2782 fps | 97.1% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 41,278 psi | 89% | 2822 fps | 97.5% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 41,191 psi | 89% | 2822 fps | 97.5% |
| Shooters World SOCOM | <<locked>> | 82% | 39,508 psi | 85% | 2730 fps | 96.3% |
| Shooters World SOCOM | <<locked>> | 84% | 41,771 psi | 90% | 2766 fps | 96.8% |
| Shooters World SOCOM | <<locked>> | 84% | 41,684 psi | 90% | 2766 fps | 96.8% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 40,538 psi | 87% | 2654 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 40,509 psi | 87% | 2651 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 94% | 40,393 psi | 87% | 2648 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 41,292 psi | 89% | 2743 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 41,205 psi | 89% | 2736 fps | 100% |
| Vihtavuori N110 | <<locked>> | 86% | 41,089 psi | 89% | 2733 fps | 100% |
| Vihtavuori N120 | <<locked>> | 98% | 40,741 psi | 88% | 2841 fps | 99.5% |
| Vihtavuori N120 | <<locked>> | 98% | 40,118 psi | 86% | 2825 fps | 99.4% |
| Vihtavuori N120 | <<locked>> | 98% | 39,929 psi | 86% | 2822 fps | 99.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| ADI AR 2205 | <<locked>> | 80% | 37,391 psi | 81% | 2618 fps | 99.4% |
| ADI AR 2205 | <<locked>> | 80% | 37,376 psi | 81% | 2612 fps | 99.3% |
| ADI AR 2205 | <<locked>> | 80% | 37,304 psi | 80% | 2612 fps | 99.3% |
| ADI AR 2207 | 14.4 gr | 88% | 29,399 psi | 63% | 2612 fps | 95.5% |
| ADI AR 2207 | 14.4 gr | 88% | 29,486 psi | 64% | 2618 fps | 95.7% |
| ADI AR 2207 | 14.4 gr | 88% | 29,457 psi | 63% | 2612 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,740 psi | 45% | 1614 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,378 psi | 44% | 1601 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 20,334 psi | 44% | 1601 fps | 100% |
| IMR 4227 | <<locked>> | 84% | 34,345 psi | 74% | 2631 fps | 95.8% |
| IMR 4227 | <<locked>> | 84% | 33,678 psi | 73% | 2612 fps | 95.5% |
| IMR 4227 | <<locked>> | 84% | 33,533 psi | 72% | 2608 fps | 95.4% |
| Lovex S053 | 12.5 gr | 80% | 29,486 psi | 64% | 2526 fps | 97.6% |
| Lovex S053 | 12.5 gr | 80% | 28,790 psi | 62% | 2503 fps | 97.3% |
| Lovex S053 | 12.5 gr | 80% | 28,747 psi | 62% | 2503 fps | 97.3% |
| Norma 200 | <<locked>> | 98% | 36,883 psi | 79% | 2799 fps | 95% |
| Norma 200 | <<locked>> | 98% | 36,869 psi | 79% | 2795 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,740 psi | 43% | 1634 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,957 psi | 43% | 1637 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,914 psi | 43% | 1637 fps | 100% |
| ReloadSwiss RS 36 | 14.3 gr | 84% | 32,576 psi | 70% | 2635 fps | 95% |
| ReloadSwiss RS 36 | 14.6 gr | 86% | 34,403 psi | 74% | 2674 fps | 95.6% |
| ReloadSwiss RS 36 | 14.6 gr | 86% | 34,258 psi | 74% | 2671 fps | 95.6% |
| Shooters World SOCOM | <<locked>> | 80% | 36,709 psi | 79% | 2667 fps | 95.5% |
| Shooters World SOCOM | <<locked>> | 80% | 36,796 psi | 79% | 2664 fps | 95.4% |
| Shooters World SOCOM | <<locked>> | 80% | 36,637 psi | 79% | 2661 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,891 psi | 60% | 2398 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,760 psi | 60% | 2392 fps | 100% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 27,673 psi | 60% | 2388 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,606 psi | 75% | 2615 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,461 psi | 74% | 2608 fps | 100% |
| Vihtavuori N110 | <<locked>> | 80% | 34,389 psi | 74% | 2605 fps | 100% |
| Vihtavuori N120 | <<locked>> | 84% | 26,818 psi | 58% | 2507 fps | 95.8% |
| Vihtavuori N120 | <<locked>> | 84% | 26,310 psi | 57% | 2484 fps | 95.4% |
| Vihtavuori N120 | <<locked>> | 84% | 26,252 psi | 57% | 2484 fps | 95.4% |
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 35 powders for .221 Rem. Fireball loaded with the .224 | 52gr | Berger Target FB. ADI AR 2207 delivers the highest muzzle velocity at 2,900 fps; across all powders the maximum-charge window runs from 1,788 fps to 2,900 fps. ADI AR 2207 gives the best case fill at 100 %, and 35 of the 35 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 52.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2207, ADI AR 2207, Hodgdon TrailBoss 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, ReloadSwiss RS 36, Lovex S053 rank at the top here: for .221 Rem. Fireball with the .224 | 52gr | Berger Target FB 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.