Load Specifications
Load data in caliber .220 Howell with .224 | 75gr | RMR BTHP bullet and 59 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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>> | 90% | 50,691 psi | 87% | 3097 fps | 99.6% |
| Accurate 4350 | <<locked>> | 82% | 51,256 psi | 88% | 3143 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 51,996 psi | 90% | 3241 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 88% | 52,402 psi | 90% | 3192 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 90% | 50,198 psi | 87% | 3179 fps | 96.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,199 psi | 90% | 3202 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,905 psi | 81% | 3153 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 49,052 psi | 85% | 3123 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,228 psi | 90% | 3205 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 51,938 psi | 90% | 3179 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 90% | 50,502 psi | 87% | 3179 fps | 98.2% |
| Alliant Reloder-23 | <<locked>> | 92% | 51,895 psi | 89% | 3176 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 51,663 psi | 89% | 3228 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,156 psi | 90% | 3251 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 49,792 psi | 86% | 3166 fps | 97.9% |
| Bofors RP30 | <<locked>> | 98% | 51,329 psi | 88% | 3212 fps | 97.8% |
| Bofors RP5 | <<locked>> | 90% | 50,502 psi | 87% | 3179 fps | 98.2% |
| Hodgdon H1000 | <<locked>> | 96% | 50,270 psi | 87% | 3166 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 88% | 50,270 psi | 87% | 3120 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 49,008 psi | 84% | 3097 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,489 psi | 90% | 3127 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 50,314 psi | 87% | 3281 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 64% | 2123 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 51,721 psi | 89% | 3123 fps | 99% |
| IMR 4831 | <<locked>> | 84% | 51,909 psi | 89% | 3136 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 51,372 psi | 89% | 3114 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 92% | 51,953 psi | 90% | 3222 fps | 97.4% |
| Lovex S065 | <<locked>> | 82% | 52,098 psi | 90% | 3114 fps | 99.8% |
| Lovex S070 | <<locked>> | 82% | 50,502 psi | 87% | 3104 fps | 99.2% |
| Lovex S071 | <<locked>> | 96% | 51,953 psi | 90% | 3120 fps | 99.8% |
| Norma 204 | <<locked>> | 82% | 48,994 psi | 84% | 3107 fps | 97.6% |
| Norma 217ᴾ | <<locked>> | 100% | 42,583 psi | 73% | 3068 fps | 97.6% |
| Norma MRP | <<locked>> | 88% | 50,372 psi | 87% | 3202 fps | 99.1% |
| Norma URP | <<locked>> | 82% | 49,908 psi | 86% | 3123 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 48,791 psi | 84% | 3169 fps | 97% |
| Ramshot Hunter | <<locked>> | 84% | 52,257 psi | 90% | 3176 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 94% | 51,387 psi | 89% | 3169 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,710 psi | 65% | 2165 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 51,387 psi | 89% | 3159 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 49,763 psi | 86% | 3179 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 51,256 psi | 88% | 3278 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 86% | 50,053 psi | 86% | 3097 fps | 96.9% |
| Rottweil R 905 | <<locked>> | 88% | 51,576 psi | 89% | 3169 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,098 psi | 90% | 3114 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 82% | 50,502 psi | 87% | 3104 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 51,372 psi | 89% | 3058 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 51,169 psi | 88% | 3163 fps | 98.3% |
| Somchem S361 | <<locked>> | 86% | 51,590 psi | 89% | 3084 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 50,328 psi | 87% | 3130 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 51,967 psi | 90% | 3136 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 51,517 psi | 89% | 3117 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 51,866 psi | 89% | 3117 fps | 98.8% |
| Vihtavuori N550 | <<locked>> | 82% | 50,734 psi | 87% | 3117 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 50,473 psi | 87% | 3146 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 50,140 psi | 86% | 3189 fps | 96.4% |
| Vihtavuori N565 | <<locked>> | 94% | 50,415 psi | 87% | 3169 fps | 96.8% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,198 psi | 88% | 3071 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 49,835 psi | 86% | 3241 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 51,837 psi | 89% | 3127 fps | 98.3% |
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>> | 80% | 35,766 psi | 62% | 2782 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 47,732 psi | 82% | 3077 fps | 99.9% |
| Accurate High Country | <<locked>> | 84% | 44,889 psi | 77% | 3097 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 82% | 42,424 psi | 73% | 2989 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 88% | 46,804 psi | 81% | 3110 fps | 96% |
| ADI AR 2217 | <<locked>> | 96% | 45,513 psi | 78% | 3068 fps | 96% |
| ADI AR 2225 | <<locked>> | 92% | 35,824 psi | 62% | 2877 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,103 psi | 69% | 2927 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,585 psi | 79% | 3084 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,784 psi | 69% | 2923 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 84% | 41,176 psi | 71% | 2986 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,330 psi | 59% | 2818 fps | 99.1% |
| Alliant Reloder-25 | <<locked>> | 82% | 31,807 psi | 55% | 2762 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,942 psi | 65% | 2959 fps | 98.5% |
| Bofors RP15 | <<locked>> | 86% | 40,625 psi | 70% | 2969 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 41,626 psi | 72% | 3012 fps | 95% |
| Bofors RP5 | <<locked>> | 84% | 41,176 psi | 71% | 2986 fps | 95.7% |
| Hodgdon H1000 | <<locked>> | 92% | 43,555 psi | 75% | 3028 fps | 96% |
| Hodgdon H4831 | <<locked>> | 86% | 46,891 psi | 81% | 3054 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 86% | 46,021 psi | 79% | 3035 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,960 psi | 74% | 2956 fps | 100% |
| Hodgdon Retumbo | 47.8 gr | 88% | 38,261 psi | 66% | 2992 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,804 psi | 48% | 1909 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,542 psi | 79% | 3005 fps | 97.9% |
| IMR 4831 | <<locked>> | 80% | 45,237 psi | 78% | 3015 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 48,109 psi | 83% | 3051 fps | 95.9% |
| IMR 7828 SSC | <<locked>> | 88% | 45,034 psi | 78% | 3081 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 49,052 psi | 85% | 3058 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 47,253 psi | 81% | 3038 fps | 98.7% |
| Lovex S071 | <<locked>> | 82% | 32,837 psi | 57% | 2707 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 45,716 psi | 79% | 3038 fps | 96.7% |
| Norma 217 | <<locked>> | 96% | 37,057 psi | 64% | 2933 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 37,507 psi | 65% | 2923 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 46,528 psi | 80% | 3058 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 45,339 psi | 78% | 3097 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 45,614 psi | 79% | 3048 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 37,666 psi | 65% | 2884 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 49% | 1949 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,993 psi | 83% | 3097 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,050 psi | 79% | 3110 fps | 99.7% |
| ReloadSwiss RS 76 | 50 gr | 86% | 35,230 psi | 61% | 2894 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 82% | 43,932 psi | 76% | 2972 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 82% | 41,771 psi | 72% | 2966 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,052 psi | 85% | 3058 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 47,253 psi | 81% | 3038 fps | 98.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,008 psi | 83% | 2995 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 41,423 psi | 71% | 2963 fps | 95.8% |
| Somchem S361 | <<locked>> | 84% | 48,037 psi | 83% | 3015 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 43,874 psi | 76% | 3015 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,798 psi | 69% | 2890 fps | 96.2% |
| Vihtavuori N160 | <<locked>> | 80% | 48,109 psi | 83% | 3058 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 39,566 psi | 68% | 2871 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 47,456 psi | 82% | 3054 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 38,551 psi | 66% | 2907 fps | 99.1% |
| Vihtavuori N560 | <<locked>> | 86% | 46,789 psi | 81% | 3120 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 92% | 47,036 psi | 81% | 3100 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,572 psi | 82% | 3012 fps | 100% |
| Winchester StaBALL HD | 44.6 gr | 80% | 30,589 psi | 53% | 2818 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 41,945 psi | 72% | 2930 fps | 95.9% |
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 | 75gr | RMR BTHP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 2,123 fps to 3,281 fps. ADI AR 2217 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 64–90 %, leaving at least 10 % headroom. The 75.0 gr projectile in 0.224" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for .220 Howell with the .224 | 75gr | RMR BTHP 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.