Load Specifications
Load data in caliber .220 Howell with .224 | 70gr | Hammer Hammer Hunter bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 92% | 49,385 psi | 85% | 3153 fps | 99.1% |
| Accurate 4350 | <<locked>> | 84% | 50,140 psi | 86% | 3205 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 51,314 psi | 88% | 3251 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,264 psi | 73% | 3114 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,488 psi | 89% | 3245 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 51,068 psi | 88% | 3274 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 51,779 psi | 89% | 3284 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 50,894 psi | 88% | 3235 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 49,168 psi | 85% | 3235 fps | 97.1% |
| Alliant Reloder-23 | <<locked>> | 94% | 50,024 psi | 86% | 3232 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 49,676 psi | 86% | 3274 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 90% | 49,922 psi | 86% | 3301 fps | 99.9% |
| Bofors RP15 | <<locked>> | 96% | 51,764 psi | 89% | 3284 fps | 97.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,139 psi | 85% | 3248 fps | 96.4% |
| Bofors RP5 | <<locked>> | 92% | 49,168 psi | 85% | 3235 fps | 97.1% |
| Bofors RP7 | <<locked>> | 82% | 49,719 psi | 86% | 3153 fps | 97.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,286 psi | 90% | 3274 fps | 97.5% |
| Hodgdon H414 | <<locked>> | 84% | 51,851 psi | 89% | 3255 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 82% | 51,082 psi | 88% | 3212 fps | 97.6% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,503 psi | 89% | 3196 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,069 psi | 90% | 3392 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,185 psi | 90% | 3281 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,796 psi | 63% | 2172 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 51,140 psi | 88% | 3189 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 82% | 50,908 psi | 88% | 3179 fps | 98.5% |
| IMR 4831 | <<locked>> | 86% | 50,647 psi | 87% | 3196 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 94% | 50,488 psi | 87% | 3271 fps | 96.1% |
| Lovex S065 | <<locked>> | 84% | 51,474 psi | 89% | 3179 fps | 99.4% |
| Lovex S070 | <<locked>> | 84% | 49,777 psi | 86% | 3166 fps | 98.6% |
| Lovex S071 | <<locked>> | 98% | 50,372 psi | 87% | 3173 fps | 99.2% |
| Norma 204 | <<locked>> | 86% | 51,837 psi | 89% | 3235 fps | 97.4% |
| Norma MRP | <<locked>> | 92% | 52,272 psi | 90% | 3323 fps | 98.9% |
| Norma URP | <<locked>> | 86% | 52,199 psi | 90% | 3248 fps | 99.9% |
| Ramshot Grand | <<locked>> | 94% | 50,952 psi | 88% | 3284 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 86% | 51,401 psi | 89% | 3241 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 96% | 49,472 psi | 85% | 3212 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,434 psi | 65% | 2218 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 50,299 psi | 87% | 3225 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,388 psi | 90% | 3314 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 49,443 psi | 85% | 3317 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 50,357 psi | 87% | 3222 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 82% | 49,719 psi | 86% | 3153 fps | 97.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 51,474 psi | 89% | 3179 fps | 99.4% |
| Shooters World SW4350 | <<locked>> | 84% | 49,777 psi | 86% | 3166 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 50,981 psi | 88% | 3123 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 49,951 psi | 86% | 3215 fps | 97.3% |
| Somchem S365 | <<locked>> | 88% | 52,431 psi | 90% | 3255 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 50,865 psi | 88% | 3192 fps | 98.2% |
| Vihtavuori N150 | <<locked>> | 82% | 51,576 psi | 89% | 3140 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 50,647 psi | 87% | 3182 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 94% | 50,531 psi | 87% | 3166 fps | 97.9% |
| Vihtavuori N550 | <<locked>> | 84% | 49,908 psi | 86% | 3182 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 92% | 52,185 psi | 90% | 3261 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,156 psi | 90% | 3307 fps | 96% |
| Vihtavuori N565 | <<locked>> | 98% | 52,431 psi | 90% | 3281 fps | 96.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 50,198 psi | 87% | 3136 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,170 psi | 90% | 3261 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 50,981 psi | 88% | 3360 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 50,995 psi | 88% | 3186 fps | 97.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 82% | 34,577 psi | 60% | 2828 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 43,453 psi | 75% | 3074 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 86% | 44,686 psi | 77% | 3114 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 98% | 39,610 psi | 68% | 3045 fps | 96.2% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 44,933 psi | 77% | 3110 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,510 psi | 72% | 3081 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,124 psi | 83% | 3222 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 44,454 psi | 77% | 3100 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 88% | 42,786 psi | 74% | 3100 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,937 psi | 53% | 2799 fps | 97.3% |
| Alliant Reloder-25 | <<locked>> | 86% | 33,141 psi | 57% | 2871 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,779 psi | 58% | 2927 fps | 96.2% |
| Bofors RP15 | <<locked>> | 92% | 45,107 psi | 78% | 3146 fps | 95.8% |
| Bofors RP30 | <<locked>> | 98% | 45,905 psi | 79% | 3182 fps | 95.5% |
| Bofors RP5 | <<locked>> | 88% | 42,786 psi | 74% | 3100 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 46,383 psi | 80% | 3084 fps | 97.2% |
| Hodgdon H1000 | <<locked>> | 96% | 45,368 psi | 78% | 3133 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 45,281 psi | 78% | 3127 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,950 psi | 83% | 3150 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,044 psi | 67% | 2956 fps | 99.4% |
| Hodgdon Retumbo | 49.3 gr | 94% | 42,482 psi | 73% | 3173 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 44,831 psi | 77% | 3136 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,528 psi | 47% | 1952 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,047 psi | 72% | 3002 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,848 psi | 82% | 3117 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 41,336 psi | 71% | 3012 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 92% | 47,239 psi | 81% | 3202 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 45,397 psi | 78% | 3061 fps | 98.5% |
| Lovex S070 | <<locked>> | 80% | 43,598 psi | 75% | 3038 fps | 97.2% |
| Lovex S071 | <<locked>> | 88% | 36,230 psi | 62% | 2867 fps | 95.7% |
| Norma 204 | <<locked>> | 82% | 44,918 psi | 77% | 3094 fps | 95.5% |
| Norma MRP | <<locked>> | 84% | 39,073 psi | 67% | 3038 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 42,598 psi | 73% | 3061 fps | 98.9% |
| Ramshot Grand | <<locked>> | 92% | 47,224 psi | 81% | 3209 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,814 psi | 72% | 3048 fps | 97.4% |
| Ramshot Magnum | <<locked>> | 90% | 39,349 psi | 68% | 2992 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 48% | 1995 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,511 psi | 75% | 3091 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,814 psi | 72% | 3097 fps | 98.5% |
| ReloadSwiss RS 76 | 51.6 gr | 92% | 39,421 psi | 68% | 3077 fps | 96% |
| Rottweil R 905 | <<locked>> | 86% | 43,816 psi | 76% | 3087 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,383 psi | 80% | 3084 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,397 psi | 78% | 3061 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 80% | 43,598 psi | 75% | 3038 fps | 97.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,556 psi | 77% | 2999 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 43,439 psi | 75% | 3081 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 39,581 psi | 68% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 41,655 psi | 72% | 3005 fps | 95.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,037 psi | 83% | 3081 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,135 psi | 76% | 3061 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 41,234 psi | 71% | 2982 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 43,671 psi | 75% | 3061 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 34,679 psi | 60% | 2887 fps | 97.3% |
| Vihtavuori N560 | <<locked>> | 90% | 48,834 psi | 84% | 3241 fps | 95% |
| Vihtavuori N565 | <<locked>> | 96% | 48,776 psi | 84% | 3212 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,613 psi | 75% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,281 psi | 78% | 3127 fps | 97.5% |
| Winchester StaBALL HD | 43.1 gr | 80% | 27,615 psi | 48% | 2772 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 43,976 psi | 76% | 3048 fps | 95.5% |
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 59 powders for .220 Howell loaded with the .224 | 70gr | Hammer Hammer Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,392 fps; across all powders the maximum-charge window runs from 2,172 fps to 3,392 fps. ADI AR 2225 gives the best case fill at 100 %, and 59 of the 59 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (400 MPa), the top charges use 63–90 %, leaving at least 10 % headroom. The 70.0 gr projectile in 0.224" calls for a 1:6.5 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Bofors RP30, Hodgdon H1000 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. Winchester StaBALL HD, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .220 Howell with the .224 | 70gr | Hammer Hammer Hunter 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.