Load Specifications
Load data in caliber .220 Howell with .224 | 55gr | Speer TNT bullet and 46 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Alliant Reloder-16.
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 3100 | <<locked>> | 96% | 51,126 psi | 88% | 3442 fps | 98.1% |
| Accurate 4350 | <<locked>> | 88% | 52,141 psi | 90% | 3520 fps | 99.3% |
| ADI AR 2208 | <<locked>> | 82% | 50,807 psi | 88% | 3461 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 51,358 psi | 89% | 3484 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 49,226 psi | 85% | 3520 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 84% | 50,473 psi | 87% | 3550 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 51,532 psi | 89% | 3537 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 48,037 psi | 83% | 3494 fps | 98.4% |
| Alliant Reloder-26 | <<locked>> | 94% | 52,054 psi | 90% | 3609 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 51,953 psi | 90% | 3465 fps | 96.7% |
| Hodgdon H414 | <<locked>> | 86% | 50,575 psi | 87% | 3497 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 49,835 psi | 86% | 3448 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 50,952 psi | 88% | 3517 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 62% | 2421 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 49,951 psi | 86% | 3428 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 50,111 psi | 86% | 3435 fps | 96.7% |
| IMR 4831 | <<locked>> | 88% | 49,371 psi | 85% | 3448 fps | 99% |
| Lovex S065 | <<locked>> | 86% | 50,720 psi | 87% | 3438 fps | 98.1% |
| Lovex S070 | <<locked>> | 88% | 52,127 psi | 90% | 3478 fps | 97.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,573 psi | 84% | 3392 fps | 97.5% |
| Norma MRP | <<locked>> | 94% | 50,386 psi | 87% | 3547 fps | 97% |
| Norma URP | <<locked>> | 88% | 51,010 psi | 88% | 3504 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 50,111 psi | 86% | 3484 fps | 97.7% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 52,185 psi | 90% | 3510 fps | 96.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,709 psi | 63% | 2470 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 49,574 psi | 85% | 3550 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,330 psi | 90% | 3533 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 50,981 psi | 88% | 3560 fps | 99% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,008 psi | 83% | 3514 fps | 96.9% |
| Rottweil R 903 | <<locked>> | 82% | 49,168 psi | 85% | 3435 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 86% | 51,953 psi | 90% | 3465 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 50,720 psi | 87% | 3438 fps | 98.1% |
| Shooters World SW4350 | <<locked>> | 88% | 52,127 psi | 90% | 3478 fps | 97.5% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 50,850 psi | 88% | 3491 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 49,763 psi | 86% | 3337 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 50,169 psi | 86% | 3373 fps | 97% |
| Somchem S355 | <<locked>> | 82% | 49,182 psi | 85% | 3428 fps | 99.7% |
| Somchem S365 | <<locked>> | 90% | 50,444 psi | 87% | 3510 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 49,400 psi | 85% | 3422 fps | 96.1% |
| Vihtavuori N150 | <<locked>> | 84% | 50,517 psi | 87% | 3409 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 49,298 psi | 85% | 3435 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 88% | 52,141 psi | 90% | 3494 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 94% | 50,314 psi | 87% | 3501 fps | 99.4% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 49,269 psi | 85% | 3389 fps | 99.9% |
| Winchester 760 | <<locked>> | 86% | 50,850 psi | 88% | 3507 fps | 97% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 51,953 psi | 90% | 3661 fps | 100% |
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 3100 | <<locked>> | 90% | 41,220 psi | 71% | 3232 fps | 95.3% |
| Accurate 4350 | <<locked>> | 80% | 38,972 psi | 67% | 3228 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,500 psi | 82% | 3392 fps | 98.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,327 psi | 83% | 3425 fps | 99.8% |
| Alliant Reloder-16 | 42.9 gr | 80% | 37,478 psi | 65% | 3238 fps | 96% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,163 psi | 74% | 3396 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 84% | 31,778 psi | 55% | 3054 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 94% | 39,088 psi | 67% | 3268 fps | 95.3% |
| Alliant Reloder-26 | 50.9 gr | 86% | 37,768 psi | 65% | 3274 fps | 95.5% |
| Bofors RP7 | <<locked>> | 84% | 48,602 psi | 84% | 3396 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 82% | 44,048 psi | 76% | 3356 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,954 psi | 60% | 3107 fps | 96.7% |
| Hodgdon Superformance | <<locked>> | 84% | 47,166 psi | 81% | 3442 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,035 psi | 47% | 2185 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 46,746 psi | 81% | 3363 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 46,949 psi | 81% | 3363 fps | 95.8% |
| IMR 4831 | <<locked>> | 80% | 37,318 psi | 64% | 3169 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 41,539 psi | 72% | 3235 fps | 95.7% |
| Lovex S070 | <<locked>> | 84% | 45,643 psi | 79% | 3343 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 42,308 psi | 73% | 3258 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 46,920 psi | 81% | 3474 fps | 96% |
| Norma URP | <<locked>> | 80% | 38,551 psi | 66% | 3225 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 84% | 43,439 psi | 75% | 3340 fps | 95.9% |
| Ramshot Magnum | <<locked>> | 98% | 48,095 psi | 83% | 3425 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 47% | 2228 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,847 psi | 79% | 3474 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,986 psi | 67% | 3238 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,913 psi | 65% | 3241 fps | 95% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 44,425 psi | 77% | 3422 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 45,861 psi | 79% | 3366 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 84% | 48,602 psi | 84% | 3396 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,539 psi | 72% | 3235 fps | 95.7% |
| Shooters World SW4350 | <<locked>> | 84% | 45,643 psi | 79% | 3343 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,224 psi | 81% | 3419 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,775 psi | 81% | 3281 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 43,816 psi | 76% | 3238 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 45,977 psi | 79% | 3363 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 34,925 psi | 60% | 3159 fps | 98.1% |
| Somchem S385 | <<locked>> | 90% | 46,151 psi | 80% | 3353 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 44,034 psi | 76% | 3281 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 40,030 psi | 69% | 3228 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 80% | 39,566 psi | 68% | 3219 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 35,375 psi | 61% | 3156 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,494 psi | 68% | 3182 fps | 98.7% |
| Winchester 760 | <<locked>> | 82% | 44,048 psi | 76% | 3356 fps | 95% |
| Winchester StaBALL HD | 48.9 gr | 86% | 30,371 psi | 52% | 3081 fps | 95.3% |
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 46 powders for .220 Howell loaded with the .224 | 55gr | Speer TNT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,661 fps; across all powders the maximum-charge window runs from 2,421 fps to 3,661 fps. Alliant Reloder-25 gives the best case fill at 100 %, and 46 of the 46 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 55.0 gr projectile in 0.224" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-25, Hodgdon TrailBoss, Lovex S071 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. Alliant Reloder-26, Winchester StaBALL HD, Alliant Reloder-16 rank at the top here: for .220 Howell with the .224 | 55gr | Speer TNT 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.