Load Specifications
Load data in caliber .221 Rem. Fireball with .224 | 46gr | RWS TMS bullet and 11 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Lovex S053, ADI AR 2207 and Vihtavuori N110.
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.
A valid access license is required to use the Personalized Load Calculator.
You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate No. 11 FS | <<locked>> | 82% | 40,350 psi | 87% | 2927 fps | 97.9% |
| ADI AR 2205 | <<locked>> | 84% | 40,625 psi | 88% | 2851 fps | 99.2% |
| ADI AR 2207ᴾ | <<locked>> | 100% | 39,537 psi | 85% | 3028 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 27,151 psi | 59% | 1909 fps | 100% |
| IMR 4227 | <<locked>> | 92% | 40,640 psi | 88% | 2936 fps | 96.5% |
| Lovex S053 | <<locked>> | 94% | 41,582 psi | 90% | 2972 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 26,992 psi | 58% | 1965 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 92% | 39,262 psi | 85% | 2953 fps | 96% |
| SNPE Vectan BA6 1/2 | <<locked>> | 96% | 40,712 psi | 88% | 2835 fps | 100% |
| Vihtavuori N110 | <<locked>> | 88% | 40,886 psi | 88% | 2920 fps | 100% |
| Vihtavuori N120ᴾ | <<locked>> | 100% | 39,972 psi | 86% | 2995 fps | 98.8% |
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 No. 11 FS | <<locked>> | 80% | 38,276 psi | 82% | 2881 fps | 97.4% |
| ADI AR 2205 | <<locked>> | 80% | 35,926 psi | 77% | 2749 fps | 98.4% |
| ADI AR 2207 | 15.7 gr | 92% | 31,372 psi | 68% | 2828 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 19,856 psi | 43% | 1716 fps | 100% |
| IMR 4227 | <<locked>> | 88% | 36,477 psi | 79% | 2844 fps | 95.2% |
| Lovex S053 | 13.1 gr | 80% | 27,572 psi | 59% | 2628 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 19,363 psi | 42% | 1752 fps | 100% |
| ReloadSwiss RS 36 | <<locked>> | 90% | 37,231 psi | 80% | 2907 fps | 95.4% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 26,281 psi | 57% | 2516 fps | 100% |
| Vihtavuori N110 | 12.5 gr | 80% | 32,489 psi | 70% | 2743 fps | 100% |
| Vihtavuori N120 | <<locked>> | 88% | 28,152 psi | 61% | 2697 fps | 95% |
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 11 powders for .221 Rem. Fireball loaded with the .224 | 46gr | RWS TMS. ADI AR 2207 delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,909 fps to 3,028 fps. ADI AR 2207 gives the best case fill at 100 %, and 11 of the 11 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (320 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. ADI AR 2207, 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. Lovex S053, ADI AR 2207, Vihtavuori N110 rank at the top here: for .221 Rem. Fireball with the .224 | 46gr | RWS TMS 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.