Load Specifications
Bullet:.224 | 75gr | Swift Scirocco
Bullet Manufacturer:Swift
Bullet Weight:75 gr
Bullet Diameter:0.224"
Bullet Length:<<locked>>
Caliber:.220 Howell load data
Case Length (l3):2.395"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:62 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:58,015 psi
Recommended Twist Rate:1:8.0
Load data in caliber .220 Howell with .224 | 75gr | Swift Scirocco bullet and 119 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and Alliant Reloder-25.
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 3100 | <<locked>> | 90% | 49,937 psi | 86% | 3084 fps | 99.5% |
| Accurate 3100 | <<locked>> | 90% | 49,937 psi | 86% | 3084 fps | 99.5% |
| Accurate 4350 | <<locked>> | 82% | 50,415 psi | 87% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 50,415 psi | 87% | 3127 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 50,908 psi | 88% | 3219 fps | 97.2% |
| Accurate MAGPRO | <<locked>> | 90% | 52,098 psi | 90% | 3222 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 88% | 51,692 psi | 89% | 3179 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 88% | 51,692 psi | 89% | 3179 fps | 98.2% |
| ADI AR 2213 | <<locked>> | 90% | 49,530 psi | 85% | 3166 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 90% | 49,530 psi | 85% | 3166 fps | 96.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,285 psi | 88% | 3182 fps | 97.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,285 psi | 88% | 3182 fps | 97.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,064 psi | 79% | 3136 fps | 99.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,064 psi | 79% | 3136 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 51,793 psi | 89% | 3173 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 51,793 psi | 89% | 3173 fps | 98.2% |
| Alliant Reloder-16 | <<locked>> | 84% | 51,372 psi | 89% | 3192 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 51,372 psi | 89% | 3192 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 51,256 psi | 88% | 3166 fps | 98.2% |
| Alliant Reloder-19 | <<locked>> | 88% | 51,256 psi | 88% | 3166 fps | 98.2% |
| Alliant Reloder-22 | <<locked>> | 90% | 49,792 psi | 86% | 3169 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 90% | 49,792 psi | 86% | 3169 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 92% | 51,097 psi | 88% | 3159 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 51,097 psi | 88% | 3159 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 50,633 psi | 87% | 3212 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 50,633 psi | 87% | 3212 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 50,981 psi | 88% | 3232 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 50,981 psi | 88% | 3232 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 49,081 psi | 85% | 3150 fps | 97.7% |
| Bofors RP15 | <<locked>> | 92% | 49,081 psi | 85% | 3150 fps | 97.7% |
| Bofors RP30 | <<locked>> | 98% | 50,285 psi | 87% | 3192 fps | 97.5% |
| Bofors RP30 | <<locked>> | 98% | 50,285 psi | 87% | 3192 fps | 97.5% |
| Bofors RP5 | <<locked>> | 90% | 49,792 psi | 86% | 3169 fps | 98% |
| Bofors RP5 | <<locked>> | 90% | 49,792 psi | 86% | 3169 fps | 98% |
| Hodgdon H1000 | <<locked>> | 98% | 49,327 psi | 85% | 3150 fps | 97.6% |
| Hodgdon H1000 | <<locked>> | 96% | 49,327 psi | 85% | 3150 fps | 97.6% |
| Hodgdon H414 | <<locked>> | 82% | 51,953 psi | 90% | 3176 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 82% | 50,111 psi | 86% | 3114 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 51,924 psi | 90% | 3153 fps | 96.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 51,924 psi | 90% | 3153 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 51,634 psi | 89% | 3114 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 51,634 psi | 89% | 3114 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 49,676 psi | 86% | 3268 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 96% | 49,676 psi | 86% | 3268 fps | 98.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 64% | 2119 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 64% | 2119 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 51,039 psi | 88% | 3110 fps | 98.8% |
| IMR 4350 | <<locked>> | 84% | 51,039 psi | 88% | 3110 fps | 98.8% |
| IMR 4831 | <<locked>> | 88% | 52,402 psi | 90% | 3143 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 51,097 psi | 88% | 3123 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 50,734 psi | 87% | 3100 fps | 96.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 50,734 psi | 87% | 3100 fps | 96.5% |
| IMR 7828 SSC | <<locked>> | 90% | 51,242 psi | 88% | 3209 fps | 97.2% |
| IMR 7828 SSC | <<locked>> | 92% | 51,242 psi | 88% | 3209 fps | 97.2% |
| Lovex S065 | <<locked>> | 82% | 51,663 psi | 89% | 3107 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 51,663 psi | 89% | 3107 fps | 99.8% |
| Lovex S070 | <<locked>> | 82% | 49,777 psi | 86% | 3087 fps | 99.1% |
| Lovex S070 | <<locked>> | 82% | 49,777 psi | 86% | 3087 fps | 99.1% |
| Lovex S071 | <<locked>> | 96% | 51,271 psi | 88% | 3107 fps | 99.7% |
| Lovex S071 | <<locked>> | 96% | 51,271 psi | 88% | 3107 fps | 99.7% |
| Norma 204 | <<locked>> | 84% | 51,764 psi | 89% | 3156 fps | 98.1% |
| Norma 204 | <<locked>> | 84% | 51,764 psi | 89% | 3156 fps | 98.1% |
| Norma 217ᴾ | <<locked>> | 100% | 41,655 psi | 72% | 3048 fps | 97.3% |
| Norma 217ᴾ | <<locked>> | 100% | 41,655 psi | 72% | 3048 fps | 97.3% |
| Norma MRP | <<locked>> | 88% | 49,284 psi | 85% | 3182 fps | 98.9% |
| Norma MRP | <<locked>> | 88% | 49,284 psi | 85% | 3182 fps | 98.9% |
| Norma URP | <<locked>> | 82% | 49,095 psi | 85% | 3110 fps | 99.9% |
| Norma URP | <<locked>> | 82% | 49,095 psi | 85% | 3110 fps | 99.9% |
| Ramshot Grand | <<locked>> | 88% | 50,778 psi | 88% | 3209 fps | 97.5% |
| Ramshot Grand | <<locked>> | 92% | 51,459 psi | 89% | 3219 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 84% | 51,503 psi | 89% | 3163 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 51,503 psi | 89% | 3163 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 92% | 52,127 psi | 90% | 3186 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 94% | 50,372 psi | 87% | 3153 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 65% | 2165 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 65% | 2165 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 50,604 psi | 87% | 3146 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 50,604 psi | 87% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 48,994 psi | 84% | 3169 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 48,994 psi | 84% | 3169 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 50,357 psi | 87% | 3258 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 50,357 psi | 87% | 3258 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 49,356 psi | 85% | 3084 fps | 96.6% |
| Rottweil R 904 | <<locked>> | 86% | 49,356 psi | 85% | 3084 fps | 96.6% |
| Rottweil R 905 | <<locked>> | 88% | 50,850 psi | 88% | 3156 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 88% | 50,850 psi | 88% | 3156 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 51,663 psi | 89% | 3107 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 82% | 51,663 psi | 89% | 3107 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 82% | 49,777 psi | 86% | 3087 fps | 99.1% |
| Shooters World SW4350 | <<locked>> | 82% | 49,777 psi | 86% | 3087 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 50,662 psi | 87% | 3045 fps | 99.1% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 50,662 psi | 87% | 3045 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 50,444 psi | 87% | 3146 fps | 98.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 50,444 psi | 87% | 3146 fps | 98.1% |
| Somchem S361 | <<locked>> | 86% | 50,705 psi | 87% | 3064 fps | 96.3% |
| Somchem S361 | <<locked>> | 86% | 50,705 psi | 87% | 3064 fps | 96.3% |
| Somchem S365 | <<locked>> | 84% | 49,472 psi | 85% | 3117 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 49,472 psi | 85% | 3117 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 51,256 psi | 88% | 3123 fps | 98.8% |
| Somchem S385 | <<locked>> | 88% | 51,256 psi | 88% | 3123 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 82% | 50,720 psi | 87% | 3104 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 50,720 psi | 87% | 3104 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 50,879 psi | 88% | 3097 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 50,879 psi | 88% | 3097 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 82% | 50,285 psi | 87% | 3107 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 82% | 50,285 psi | 87% | 3107 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 88% | 49,676 psi | 86% | 3133 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 49,676 psi | 86% | 3133 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 49,110 psi | 85% | 3169 fps | 96% |
| Vihtavuori N560 | <<locked>> | 88% | 49,110 psi | 85% | 3169 fps | 96% |
| Vihtavuori N565 | <<locked>> | 94% | 49,763 psi | 86% | 3156 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 94% | 49,763 psi | 86% | 3156 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 50,183 psi | 87% | 3054 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 50,183 psi | 87% | 3054 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 52,286 psi | 90% | 3182 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 92% | 48,530 psi | 84% | 3222 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 48,530 psi | 84% | 3222 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 48,617 psi | 84% | 3068 fps | 97.6% |
| Winchester Supreme 780 | <<locked>> | 90% | 51,227 psi | 88% | 3114 fps | 98.2% |
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% | 35,070 psi | 60% | 2766 fps | 96.1% |
| Accurate 3100 | <<locked>> | 80% | 35,070 psi | 60% | 2766 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 46,876 psi | 81% | 3061 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 46,876 psi | 81% | 3061 fps | 99.8% |
| Accurate High Country | <<locked>> | 84% | 44,121 psi | 76% | 3077 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 88% | 48,501 psi | 84% | 3153 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 82% | 42,003 psi | 72% | 2982 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 82% | 42,003 psi | 72% | 2982 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 88% | 46,122 psi | 80% | 3097 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 88% | 46,122 psi | 80% | 3097 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 44,643 psi | 77% | 3045 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 96% | 44,643 psi | 77% | 3045 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 35,143 psi | 61% | 2861 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 35,143 psi | 61% | 2861 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 42,322 psi | 73% | 2979 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 42,322 psi | 73% | 2979 fps | 95.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,759 psi | 77% | 3071 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,759 psi | 77% | 3071 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,901 psi | 72% | 2969 fps | 95.7% |
| Alliant Reloder-19 | <<locked>> | 82% | 41,901 psi | 72% | 2969 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 84% | 40,466 psi | 70% | 2969 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 40,466 psi | 70% | 2969 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,634 psi | 58% | 2799 fps | 98.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,634 psi | 58% | 2799 fps | 98.9% |
| Alliant Reloder-25 | 43.5 gr | 82% | 31,444 psi | 54% | 2753 fps | 95.1% |
| Alliant Reloder-25 | 43.5 gr | 82% | 31,444 psi | 54% | 2753 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,202 psi | 64% | 2943 fps | 98.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,202 psi | 64% | 2943 fps | 98.3% |
| Bofors RP15 | <<locked>> | 88% | 42,888 psi | 74% | 3022 fps | 96% |
| Bofors RP15 | <<locked>> | 88% | 42,888 psi | 74% | 3022 fps | 96% |
| Bofors RP30 | <<locked>> | 94% | 43,743 psi | 75% | 3061 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 43,743 psi | 75% | 3061 fps | 95.7% |
| Bofors RP5 | <<locked>> | 84% | 40,466 psi | 70% | 2969 fps | 95.3% |
| Bofors RP5 | <<locked>> | 84% | 40,466 psi | 70% | 2969 fps | 95.3% |
| Hodgdon H1000 | <<locked>> | 94% | 42,989 psi | 74% | 3012 fps | 95.7% |
| Hodgdon H1000 | <<locked>> | 92% | 42,714 psi | 74% | 3009 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 48,776 psi | 84% | 3117 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 46,804 psi | 81% | 3048 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 48,370 psi | 83% | 3084 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 88% | 48,370 psi | 83% | 3084 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,438 psi | 73% | 2946 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,438 psi | 73% | 2946 fps | 100% |
| Hodgdon Retumbo | 48.2 gr | 90% | 40,161 psi | 69% | 3045 fps | 96% |
| Hodgdon Retumbo | 48.2 gr | 90% | 40,161 psi | 69% | 3045 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 48% | 1903 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,746 psi | 48% | 1903 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,860 psi | 77% | 2989 fps | 97.6% |
| IMR 4350 | <<locked>> | 80% | 44,860 psi | 77% | 2989 fps | 97.6% |
| IMR 4831 | <<locked>> | 80% | 40,364 psi | 70% | 2910 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 44,759 psi | 77% | 3005 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 47,471 psi | 82% | 3038 fps | 95.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 47,471 psi | 82% | 3038 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 44,367 psi | 76% | 3068 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 88% | 44,367 psi | 76% | 3068 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 48,312 psi | 83% | 3045 fps | 99.5% |
| Lovex S065 | <<locked>> | 80% | 48,312 psi | 83% | 3045 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 46,775 psi | 81% | 3028 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 46,775 psi | 81% | 3028 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 34,389 psi | 59% | 2749 fps | 95.8% |
| Lovex S071 | <<locked>> | 84% | 34,389 psi | 59% | 2749 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 45,020 psi | 78% | 3022 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 45,020 psi | 78% | 3022 fps | 96.4% |
| Norma 217 | <<locked>> | 96% | 36,172 psi | 62% | 2910 fps | 95% |
| Norma 217 | <<locked>> | 96% | 36,172 psi | 62% | 2910 fps | 95% |
| Norma MRP | <<locked>> | 80% | 36,811 psi | 63% | 2907 fps | 95.4% |
| Norma MRP | <<locked>> | 80% | 36,811 psi | 63% | 2907 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 46,035 psi | 79% | 3051 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 46,035 psi | 79% | 3051 fps | 99.7% |
| Ramshot Grand | <<locked>> | 84% | 43,439 psi | 75% | 3054 fps | 95.3% |
| Ramshot Grand | <<locked>> | 88% | 44,338 psi | 76% | 3074 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 44,904 psi | 77% | 3035 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 80% | 44,904 psi | 77% | 3035 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 84% | 38,072 psi | 66% | 2894 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 86% | 37,057 psi | 64% | 2867 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 49% | 1942 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 49% | 1942 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,181 psi | 81% | 3084 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,181 psi | 81% | 3084 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,281 psi | 78% | 3094 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,281 psi | 78% | 3094 fps | 99.6% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 37,260 psi | 64% | 2949 fps | 96.1% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 37,260 psi | 64% | 2949 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 84% | 46,064 psi | 79% | 3018 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 84% | 46,064 psi | 79% | 3018 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 82% | 41,307 psi | 71% | 2956 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 41,307 psi | 71% | 2956 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,312 psi | 83% | 3045 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,312 psi | 83% | 3045 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 46,775 psi | 81% | 3028 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 46,775 psi | 81% | 3028 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,340 psi | 82% | 2982 fps | 98.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,340 psi | 82% | 2982 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,959 psi | 71% | 2949 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 40,959 psi | 71% | 2949 fps | 95.5% |
| Somchem S361 | <<locked>> | 84% | 47,471 psi | 82% | 3005 fps | 95.4% |
| Somchem S361 | <<locked>> | 84% | 47,471 psi | 82% | 3005 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,033 psi | 74% | 2999 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 43,033 psi | 74% | 2999 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,102 psi | 67% | 2871 fps | 95.9% |
| Somchem S385 | <<locked>> | 80% | 39,102 psi | 67% | 2871 fps | 95.9% |
| Vihtavuori N160 | <<locked>> | 80% | 47,297 psi | 82% | 3041 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 47,297 psi | 82% | 3041 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 38,928 psi | 67% | 2858 fps | 95.5% |
| Vihtavuori N165 | <<locked>> | 84% | 38,928 psi | 67% | 2858 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 46,992 psi | 81% | 3045 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 80% | 46,992 psi | 81% | 3045 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 37,768 psi | 65% | 2887 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 37,768 psi | 65% | 2887 fps | 98.9% |
| Vihtavuori N560 | <<locked>> | 86% | 45,774 psi | 79% | 3100 fps | 95% |
| Vihtavuori N560 | <<locked>> | 86% | 45,774 psi | 79% | 3100 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 46,398 psi | 80% | 3087 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 92% | 46,398 psi | 80% | 3087 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,876 psi | 81% | 2999 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,876 psi | 81% | 2999 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,776 psi | 84% | 3117 fps | 98.8% |
| Winchester StaBALL HD | 44 gr | 80% | 30,008 psi | 52% | 2799 fps | 98.9% |
| Winchester StaBALL HD | 44 gr | 80% | 30,008 psi | 52% | 2799 fps | 98.9% |
| Winchester Supreme 780 | <<locked>> | 82% | 42,119 psi | 73% | 2936 fps | 95.9% |
| Winchester Supreme 780 | <<locked>> | 84% | 41,307 psi | 71% | 2917 fps | 95.6% |
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 119 powders for .220 Howell loaded with the .224 | 75gr | Swift Scirocco. Hodgdon Retumbo delivers the highest muzzle velocity at 3,268 fps; across all powders the maximum-charge window runs from 2,119 fps to 3,268 fps. ADI AR 2217 gives the best case fill at 100 %, and 119 of the 119 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 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2225 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, Winchester StaBALL HD, Alliant Reloder-25 rank at the top here: for .220 Howell with the .224 | 75gr | Swift Scirocco 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.