Load Specifications
Load data in caliber .223 WSSM with .227 | 70gr | Hornady SP bullet and 88 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-26 and Alliant Reloder-17.
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 2495 | <<locked>> | 82% | 54,694 psi | 86% | 3232 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 55,970 psi | 88% | 3291 fps | 97.8% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,491 psi | 85% | 3330 fps | 99% |
| Accurate 4064 | <<locked>> | 84% | 55,027 psi | 86% | 3287 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 56,304 psi | 88% | 3396 fps | 99.9% |
| Accurate High Country | <<locked>> | 98% | 55,405 psi | 87% | 3474 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 57,276 psi | 90% | 3373 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 55,027 psi | 86% | 3317 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 98% | 57,493 psi | 90% | 3435 fps | 97.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 54,578 psi | 86% | 3451 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 57,334 psi | 90% | 3428 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 56,115 psi | 88% | 3350 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 56,275 psi | 88% | 3373 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 56,913 psi | 89% | 3461 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 54,375 psi | 85% | 3422 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 56,550 psi | 89% | 3415 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 3415 fps | 97% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 50,749 psi | 80% | 3346 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,309 psi | 69% | 3241 fps | 97.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 54,969 psi | 86% | 3501 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 57,740 psi | 90% | 3389 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 57,130 psi | 90% | 3366 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,070 psi | 85% | 3415 fps | 97% |
| Bofors RP7 | <<locked>> | 90% | 56,188 psi | 88% | 3337 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 86% | 57,406 psi | 90% | 3383 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 90% | 54,491 psi | 85% | 3383 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 88% | 54,201 psi | 85% | 3337 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 57,246 psi | 90% | 3373 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 55,056 psi | 86% | 3363 fps | 100% |
| Hodgdon Superformance | <<locked>> | 90% | 55,303 psi | 87% | 3422 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,347 psi | 57% | 2152 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 55,477 psi | 87% | 3327 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 54,520 psi | 85% | 3301 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 57,406 psi | 90% | 3337 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 57,537 psi | 90% | 3373 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 88% | 54,592 psi | 86% | 3310 fps | 98.2% |
| IMR 4831 | <<locked>> | 94% | 56,478 psi | 89% | 3383 fps | 99.9% |
| IMR 4895 | <<locked>> | 84% | 57,740 psi | 90% | 3406 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 56,144 psi | 88% | 3291 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 54,795 psi | 86% | 3294 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 54,665 psi | 86% | 3304 fps | 99.2% |
| Lovex S070 | <<locked>> | 92% | 56,028 psi | 88% | 3350 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 44,962 psi | 70% | 3146 fps | 97.2% |
| Norma 201 | <<locked>> | 82% | 56,101 psi | 88% | 3314 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,768 psi | 89% | 3310 fps | 100% |
| Norma 203B | <<locked>> | 84% | 55,564 psi | 87% | 3356 fps | 100% |
| Norma 204 | <<locked>> | 92% | 54,781 psi | 86% | 3363 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 57,551 psi | 90% | 3514 fps | 98.8% |
| Norma URP | <<locked>> | 92% | 54,766 psi | 86% | 3376 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 84% | 56,579 psi | 89% | 3379 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 57,537 psi | 90% | 3435 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,956 psi | 58% | 2201 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 57,508 psi | 90% | 3363 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 57,261 psi | 90% | 3448 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 53,751 psi | 84% | 3422 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 56,362 psi | 88% | 3419 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 54,650 psi | 86% | 3442 fps | 99.7% |
| Rottweil R 902 | <<locked>> | 84% | 56,927 psi | 89% | 3317 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 56,985 psi | 89% | 3356 fps | 100% |
| Rottweil R 905 | <<locked>> | 98% | 55,941 psi | 88% | 3406 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 90% | 56,188 psi | 88% | 3337 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 90% | 54,665 psi | 86% | 3304 fps | 99.2% |
| Shooters World Precision | <<locked>> | 84% | 54,795 psi | 86% | 3294 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 56,028 psi | 88% | 3350 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 55,245 psi | 87% | 3366 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 55,956 psi | 88% | 3337 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,666 psi | 89% | 3238 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 54,346 psi | 85% | 3182 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 54,317 psi | 85% | 3248 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 55,448 psi | 87% | 3399 fps | 97.2% |
| Somchem S335 | <<locked>> | 82% | 56,565 psi | 89% | 3232 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 57,029 psi | 89% | 3356 fps | 100% |
| Somchem S365 | <<locked>> | 94% | 54,215 psi | 85% | 3383 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 56,521 psi | 89% | 3376 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 82% | 57,159 psi | 90% | 3219 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,971 psi | 89% | 3271 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 57,667 psi | 90% | 3287 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 54,694 psi | 86% | 3268 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 57,058 psi | 89% | 3373 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,402 psi | 82% | 3281 fps | 97.1% |
| Vihtavuori N540 | <<locked>> | 84% | 55,956 psi | 88% | 3281 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 56,057 psi | 88% | 3373 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 56,797 psi | 89% | 3435 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,029 psi | 89% | 3333 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 54,897 psi | 86% | 3389 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,180 psi | 72% | 3399 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 56,420 psi | 88% | 3350 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 56,826 psi | 89% | 3366 fps | 97.3% |
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 2495 | <<locked>> | 80% | 51,285 psi | 80% | 3176 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,892 psi | 77% | 3156 fps | 96.4% |
| Accurate 3100 | <<locked>> | 90% | 38,247 psi | 60% | 2992 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 48,559 psi | 76% | 3179 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,898 psi | 58% | 2989 fps | 96.5% |
| Accurate High Country | <<locked>> | 96% | 51,474 psi | 81% | 3399 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 53,896 psi | 84% | 3314 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,774 psi | 72% | 3140 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 50,212 psi | 79% | 3301 fps | 95.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 50,807 psi | 80% | 3379 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 50,198 psi | 79% | 3294 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 46,282 psi | 73% | 3169 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 49,429 psi | 77% | 3245 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,940 psi | 56% | 2999 fps | 96.4% |
| Alliant Reloder-17 | 39.7 gr | 80% | 40,741 psi | 64% | 3146 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 49,559 psi | 78% | 3284 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 96% | 47,195 psi | 74% | 3274 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,979 psi | 47% | 2828 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 94% | 36,521 psi | 57% | 3035 fps | 95% |
| Alliant Reloder-26 | 43.8 gr | 86% | 35,041 psi | 55% | 3038 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 54,012 psi | 85% | 3327 fps | 99.8% |
| Bofors RP3 | <<locked>> | 80% | 46,557 psi | 73% | 3176 fps | 99.9% |
| Bofors RP5 | <<locked>> | 96% | 47,195 psi | 74% | 3274 fps | 95.2% |
| Bofors RP7 | <<locked>> | 82% | 43,613 psi | 68% | 3081 fps | 95.1% |
| Hodgdon H380 | <<locked>> | 80% | 46,934 psi | 74% | 3182 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 82% | 41,800 psi | 66% | 3114 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 84% | 47,616 psi | 75% | 3205 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,533 psi | 53% | 2884 fps | 97.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,329 psi | 80% | 3301 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 44,019 psi | 69% | 3192 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,122 psi | 43% | 1929 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 52,170 psi | 82% | 3268 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,138 psi | 75% | 3182 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,531 psi | 79% | 3212 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 44,512 psi | 70% | 3117 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 42,250 psi | 66% | 3051 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 35,331 psi | 55% | 2933 fps | 96% |
| IMR 4895 | <<locked>> | 80% | 50,691 psi | 79% | 3278 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 52,837 psi | 83% | 3232 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 48,457 psi | 76% | 3182 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,001 psi | 63% | 2999 fps | 96.1% |
| Lovex S070 | <<locked>> | 82% | 40,654 psi | 64% | 3031 fps | 95.1% |
| Lovex S071 | <<locked>> | 96% | 39,392 psi | 62% | 3022 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 52,779 psi | 83% | 3255 fps | 100% |
| Norma 202 | <<locked>> | 80% | 53,388 psi | 84% | 3255 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,776 psi | 76% | 3228 fps | 99.8% |
| Norma 204 | <<locked>> | 90% | 51,010 psi | 80% | 3291 fps | 95.8% |
| Norma MRP | <<locked>> | 92% | 43,381 psi | 68% | 3225 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 36,738 psi | 58% | 2989 fps | 96.3% |
| Ramshot Big Game | <<locked>> | 80% | 49,313 psi | 77% | 3251 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 40,973 psi | 64% | 3100 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,456 psi | 43% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,978 psi | 74% | 3159 fps | 97.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 53,316 psi | 84% | 3379 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 43,279 psi | 68% | 3219 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 36,666 psi | 57% | 3002 fps | 96% |
| ReloadSwiss RS 70 | 40.4 gr | 80% | 35,839 psi | 56% | 3009 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 50,024 psi | 78% | 3196 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,874 psi | 69% | 3114 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 94% | 48,791 psi | 76% | 3264 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 82% | 43,613 psi | 68% | 3081 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,001 psi | 63% | 2999 fps | 96.1% |
| Shooters World Precision | <<locked>> | 80% | 48,457 psi | 76% | 3182 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 40,654 psi | 64% | 3031 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,918 psi | 70% | 3166 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 52,330 psi | 82% | 3274 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 53,200 psi | 83% | 3182 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,976 psi | 70% | 3025 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 41,727 psi | 65% | 2992 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 48,341 psi | 76% | 3261 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 53,301 psi | 84% | 3179 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 44,237 psi | 69% | 3117 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 33,199 psi | 52% | 2933 fps | 98.4% |
| Somchem S385 | <<locked>> | 90% | 43,352 psi | 68% | 3114 fps | 95% |
| Vihtavuori N133 | <<locked>> | 80% | 53,737 psi | 84% | 3166 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 50,169 psi | 79% | 3163 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 50,647 psi | 79% | 3176 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 42,221 psi | 66% | 3035 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 38,101 psi | 60% | 2989 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 96% | 45,774 psi | 72% | 3150 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 48,950 psi | 77% | 3159 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 37,608 psi | 59% | 2986 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 84% | 33,185 psi | 52% | 2923 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 37,521 psi | 59% | 2956 fps | 98.8% |
| Winchester 760 | <<locked>> | 82% | 41,800 psi | 66% | 3114 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 86% | 28,587 psi | 45% | 2861 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 52,736 psi | 83% | 3287 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 49,400 psi | 77% | 3232 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 88 powders for .223 WSSM loaded with the .227 | 70gr | Hornady SP. Norma MRP delivers the highest muzzle velocity at 3,514 fps; across all powders the maximum-charge window runs from 2,152 fps to 3,514 fps. Accurate 3100 gives the best case fill at 100 %, and 88 of the 88 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 70.0 gr projectile in 0.227" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-22, Alliant Reloder-23 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-26, Alliant Reloder-17 rank at the top here: for .223 WSSM with the .227 | 70gr | Hornady SP 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.