Load Specifications
Bullet Manufacturer:Hammer
Bullet Weight:70 gr
Bullet Diameter:0.224"
Bullet Length:<<locked>>
Caliber:.223 WSSM load data
Case Length (l3):1.663"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:53.7 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:6.5
Load data in caliber .223 WSSM with .224 | 70gr | Hammer Hammer Hunter bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-16 and Hodgdon Superformance.
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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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 2495 | <<locked>> | 84% | 54,810 psi | 86% | 3225 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,318 psi | 88% | 3278 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,893 psi | 78% | 3238 fps | 98% |
| Accurate 4064 | <<locked>> | 86% | 54,824 psi | 86% | 3278 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,550 psi | 87% | 3376 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 82% | 54,230 psi | 85% | 3307 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 88% | 55,419 psi | 87% | 3310 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,232 psi | 90% | 3419 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,420 psi | 88% | 3310 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 54,375 psi | 85% | 3438 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3409 fps | 96.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,971 psi | 89% | 3409 fps | 96.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,927 psi | 88% | 3337 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,449 psi | 88% | 3363 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,289 psi | 88% | 3442 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 90% | 53,998 psi | 85% | 3412 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,115 psi | 88% | 3396 fps | 96.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,644 psi | 73% | 3261 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,089 psi | 64% | 3150 fps | 96.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,664 psi | 84% | 3471 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 54,302 psi | 85% | 3320 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 57,029 psi | 89% | 3356 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,550 psi | 89% | 3323 fps | 97.7% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,537 psi | 90% | 3287 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,623 psi | 89% | 3340 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,537 psi | 90% | 3369 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 54,360 psi | 85% | 3366 fps | 98% |
| Hodgdon H4350 | <<locked>> | 90% | 54,404 psi | 85% | 3327 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 54,824 psi | 86% | 3320 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,710 psi | 89% | 3360 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,752 psi | 86% | 3353 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 54,839 psi | 86% | 3406 fps | 97.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 56% | 2119 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,086 psi | 88% | 3323 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,332 psi | 87% | 3307 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,042 psi | 86% | 3294 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,653 psi | 90% | 3323 fps | 98.4% |
| IMR 4350 | <<locked>> | 96% | 57,406 psi | 90% | 3353 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 90% | 54,839 psi | 86% | 3297 fps | 97.9% |
| IMR 4831 | <<locked>> | 96% | 55,970 psi | 88% | 3366 fps | 99.8% |
| IMR 4895 | <<locked>> | 84% | 54,302 psi | 85% | 3337 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,420 psi | 88% | 3310 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 54,476 psi | 85% | 3281 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,753 psi | 89% | 3287 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 54,839 psi | 86% | 3287 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 54,853 psi | 86% | 3297 fps | 98.9% |
| Lovex S070 | <<locked>> | 94% | 55,985 psi | 88% | 3337 fps | 98.3% |
| Norma 201 | <<locked>> | 84% | 56,565 psi | 89% | 3307 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,217 psi | 90% | 3307 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,738 psi | 87% | 3350 fps | 100% |
| Norma 204 | <<locked>> | 94% | 54,592 psi | 86% | 3343 fps | 96.2% |
| Norma MRPᴾ | <<locked>> | 100% | 52,649 psi | 83% | 3415 fps | 97.7% |
| Norma URP | <<locked>> | 94% | 54,476 psi | 85% | 3363 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 56,666 psi | 89% | 3373 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,956 psi | 89% | 3415 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 56,536 psi | 89% | 3327 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,797 psi | 89% | 3350 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 57% | 2169 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,493 psi | 90% | 3346 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,261 psi | 90% | 3438 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,464 psi | 90% | 3474 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,506 psi | 87% | 3396 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 54,592 psi | 86% | 3428 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 82% | 57,232 psi | 90% | 3287 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,043 psi | 89% | 3304 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,898 psi | 89% | 3346 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 3383 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,550 psi | 89% | 3323 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 92% | 54,853 psi | 86% | 3297 fps | 98.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 54,476 psi | 85% | 3281 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 54,839 psi | 86% | 3287 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,985 psi | 88% | 3337 fps | 98.3% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,853 psi | 86% | 3350 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,709 psi | 87% | 3307 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,275 psi | 88% | 3333 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,580 psi | 90% | 3238 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 54,607 psi | 86% | 3176 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 54,491 psi | 85% | 3235 fps | 97.9% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3373 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 57,145 psi | 90% | 3232 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,317 psi | 87% | 3297 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,014 psi | 89% | 3346 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 57,174 psi | 90% | 3425 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,101 psi | 88% | 3353 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 82% | 54,302 psi | 85% | 3163 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,217 psi | 90% | 3264 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 54,302 psi | 85% | 3225 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 54,766 psi | 86% | 3261 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,550 psi | 89% | 3356 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 57,000 psi | 89% | 3310 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,043 psi | 88% | 3271 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,709 psi | 87% | 3356 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,156 psi | 82% | 3350 fps | 99.7% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,797 psi | 89% | 3320 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,580 psi | 90% | 3363 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,766 psi | 86% | 3376 fps | 98% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,380 psi | 66% | 3301 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,434 psi | 88% | 3340 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 3278 fps | 95.9% |
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 2495 | <<locked>> | 80% | 47,819 psi | 75% | 3114 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,383 psi | 73% | 3087 fps | 95.2% |
| Accurate 3100 | <<locked>> | 94% | 40,335 psi | 63% | 3035 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,252 psi | 71% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,997 psi | 53% | 2907 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 50,850 psi | 80% | 3248 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,294 psi | 68% | 3074 fps | 98.4% |
| ADI AR 2209 | <<locked>> | 96% | 49,966 psi | 78% | 3278 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,924 psi | 83% | 3251 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,137 psi | 74% | 3294 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,835 psi | 78% | 3274 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,835 psi | 78% | 3274 fps | 95.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,294 psi | 68% | 3094 fps | 99.4% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,412 psi | 73% | 3173 fps | 99% |
| Alliant Reloder-16 | 34.7 gr | 80% | 33,692 psi | 53% | 2923 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,840 psi | 59% | 3068 fps | 98.3% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,153 psi | 77% | 3264 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,647 psi | 50% | 2881 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,508 psi | 60% | 3077 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 37,260 psi | 58% | 3097 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,618 psi | 79% | 3251 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 43,555 psi | 68% | 3107 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 46,833 psi | 73% | 3136 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,375 psi | 85% | 3235 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,678 psi | 83% | 3274 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,135 psi | 69% | 3114 fps | 97.7% |
| Hodgdon H414 | <<locked>> | 86% | 44,512 psi | 70% | 3169 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 86% | 47,776 psi | 75% | 3192 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 51,372 psi | 81% | 3258 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,009 psi | 49% | 2805 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,964 psi | 75% | 3228 fps | 99.9% |
| Hodgdon Superformance | 43.4 gr | 88% | 47,239 psi | 74% | 3255 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 42% | 1900 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,211 psi | 77% | 3202 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 51,663 psi | 81% | 3245 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,498 psi | 71% | 3117 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,921 psi | 75% | 3140 fps | 96.5% |
| IMR 4350 | <<locked>> | 88% | 44,672 psi | 70% | 3107 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 84% | 45,252 psi | 71% | 3107 fps | 95.7% |
| IMR 4831 | <<locked>> | 82% | 35,317 psi | 55% | 2927 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 47,572 psi | 75% | 3209 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 80% | 52,924 psi | 83% | 3251 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,937 psi | 80% | 3219 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,951 psi | 78% | 3166 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 45,382 psi | 71% | 3114 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 40,001 psi | 63% | 2986 fps | 95.7% |
| Lovex S070 | <<locked>> | 86% | 43,482 psi | 68% | 3087 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,632 psi | 78% | 3186 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,198 psi | 79% | 3189 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,759 psi | 72% | 3159 fps | 99.3% |
| Norma 204 | <<locked>> | 92% | 51,010 psi | 80% | 3278 fps | 95.3% |
| Norma MRP | <<locked>> | 96% | 45,919 psi | 72% | 3274 fps | 96% |
| Norma URP | <<locked>> | 82% | 36,477 psi | 57% | 2976 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 45,832 psi | 72% | 3173 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 40,582 psi | 64% | 3084 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 53,156 psi | 83% | 3264 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,895 psi | 83% | 3281 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,151 psi | 43% | 1942 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,135 psi | 69% | 3087 fps | 96.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,966 psi | 78% | 3307 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,219 psi | 63% | 3143 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,201 psi | 57% | 2986 fps | 95.5% |
| ReloadSwiss RS 70 | 39.8 gr | 84% | 38,203 psi | 60% | 3064 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 53,664 psi | 84% | 3232 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,268 psi | 74% | 3133 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,872 psi | 64% | 3038 fps | 99% |
| Rottweil R 905 | <<locked>> | 96% | 48,211 psi | 76% | 3245 fps | 95% |
| Rottweil R 907 | <<locked>> | 86% | 46,833 psi | 73% | 3136 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 82% | 40,001 psi | 63% | 2986 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,937 psi | 80% | 3219 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,382 psi | 71% | 3114 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 43,482 psi | 68% | 3087 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,105 psi | 66% | 3097 fps | 98.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,837 psi | 81% | 3238 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,516 psi | 78% | 3209 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,749 psi | 80% | 3130 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,699 psi | 67% | 2972 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,976 psi | 70% | 3051 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 51,227 psi | 80% | 3307 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,314 psi | 79% | 3120 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,459 psi | 81% | 3228 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 41,292 psi | 65% | 3041 fps | 98.9% |
| Somchem S365 | <<locked>> | 80% | 30,603 psi | 48% | 2851 fps | 97.2% |
| Somchem S385 | <<locked>> | 94% | 45,876 psi | 72% | 3159 fps | 95.3% |
| Vihtavuori N133 | <<locked>> | 80% | 51,227 psi | 80% | 3117 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,355 psi | 74% | 3107 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,645 psi | 75% | 3114 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,450 psi | 62% | 2966 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 35,476 psi | 56% | 2913 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 53,359 psi | 84% | 3248 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,195 psi | 72% | 3104 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,099 psi | 55% | 2913 fps | 95% |
| Vihtavuori N555 | <<locked>> | 86% | 32,503 psi | 51% | 2904 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,969 psi | 55% | 2881 fps | 97.7% |
| Winchester 748 | <<locked>> | 80% | 53,911 psi | 84% | 3304 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,512 psi | 70% | 3169 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 90% | 30,197 psi | 47% | 2913 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,168 psi | 77% | 3212 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,979 psi | 77% | 3209 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 99 powders for .223 WSSM loaded with the .224 | 70gr | Hammer Hammer Hunter. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,474 fps; across all powders the maximum-charge window runs from 2,119 fps to 3,474 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, 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. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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. ReloadSwiss RS 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .223 WSSM 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.