Load Specifications
Load data in caliber .223 WSSM with .224 | 77gr | Berger LTB bullet and 88 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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>> | 82% | 57,319 psi | 90% | 3130 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 54,389 psi | 85% | 3140 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3248 fps | 99.7% |
| Accurate 4064 | <<locked>> | 84% | 57,711 psi | 90% | 3192 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 55,201 psi | 87% | 3248 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 54,607 psi | 86% | 3337 fps | 96.9% |
| ADI AR 2208 | <<locked>> | 86% | 57,479 psi | 90% | 3225 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,028 psi | 88% | 3287 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,580 psi | 90% | 3343 fps | 97.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,363 psi | 90% | 3360 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 56,391 psi | 88% | 3287 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,911 psi | 86% | 3192 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,998 psi | 86% | 3215 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,811 psi | 87% | 3310 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,522 psi | 90% | 3337 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 55,622 psi | 87% | 3278 fps | 97.9% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3340 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,650 psi | 84% | 3261 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,746 psi | 73% | 3182 fps | 99.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,998 psi | 85% | 3353 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 52,011 psi | 82% | 3251 fps | 97.3% |
| Bofors RP3 | <<locked>> | 84% | 55,637 psi | 87% | 3205 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3340 fps | 98.3% |
| Bofors RP7 | <<locked>> | 88% | 55,042 psi | 86% | 3189 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 84% | 56,275 psi | 88% | 3228 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 90% | 57,334 psi | 90% | 3304 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 56,681 psi | 89% | 3255 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,623 psi | 89% | 3264 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,130 psi | 88% | 3222 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,522 psi | 90% | 3268 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,701 psi | 72% | 3212 fps | 96.5% |
| Hodgdon Superformance | <<locked>> | 88% | 53,838 psi | 84% | 3271 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,434 psi | 57% | 2054 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,898 psi | 89% | 3205 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,956 psi | 88% | 3186 fps | 99% |
| IMR 4350 | <<locked>> | 92% | 56,318 psi | 88% | 3225 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,753 psi | 89% | 3222 fps | 99.1% |
| IMR 4831 | <<locked>> | 92% | 55,434 psi | 87% | 3235 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,478 psi | 89% | 3248 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 55,390 psi | 87% | 3205 fps | 96.2% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,955 psi | 86% | 3310 fps | 96.6% |
| Lovex S062 | <<locked>> | 84% | 57,246 psi | 90% | 3199 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,956 psi | 89% | 3219 fps | 99.7% |
| Lovex S070 | <<locked>> | 90% | 54,723 psi | 86% | 3199 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 3081 fps | 98.5% |
| Norma 203B | <<locked>> | 82% | 54,360 psi | 85% | 3202 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,261 psi | 90% | 3281 fps | 98% |
| Norma MRP | <<locked>> | 98% | 56,768 psi | 89% | 3373 fps | 99.3% |
| Norma URP | <<locked>> | 92% | 57,595 psi | 90% | 3291 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 55,332 psi | 87% | 3228 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,564 psi | 87% | 3330 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 92% | 56,304 psi | 88% | 3287 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,922 psi | 78% | 3189 fps | 97.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,115 psi | 58% | 2100 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,014 psi | 88% | 3209 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,782 psi | 89% | 3327 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 55,172 psi | 86% | 3268 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,522 psi | 90% | 3363 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,093 psi | 72% | 3212 fps | 97.8% |
| Rottweil R 902 | <<locked>> | 82% | 55,434 psi | 87% | 3156 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,912 psi | 88% | 3205 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,566 psi | 90% | 3255 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 96% | 54,665 psi | 86% | 3258 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 88% | 55,042 psi | 86% | 3189 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,956 psi | 89% | 3219 fps | 99.7% |
| Shooters World Precision | <<locked>> | 84% | 57,246 psi | 90% | 3199 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,723 psi | 86% | 3199 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,421 psi | 90% | 3264 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,652 psi | 89% | 3084 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,652 psi | 89% | 3163 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 54,201 psi | 85% | 3251 fps | 97.8% |
| Somchem S355 | <<locked>> | 86% | 55,898 psi | 88% | 3202 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,057 psi | 88% | 3186 fps | 96.1% |
| Somchem S365 | <<locked>> | 94% | 57,072 psi | 89% | 3287 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 55,709 psi | 87% | 3238 fps | 98.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,811 psi | 87% | 3110 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,260 psi | 88% | 3130 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 57,072 psi | 89% | 3169 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,854 psi | 88% | 3225 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,795 psi | 86% | 3202 fps | 98.3% |
| Vihtavuori N540 | <<locked>> | 82% | 54,375 psi | 85% | 3120 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,042 psi | 86% | 3225 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 98% | 56,173 psi | 88% | 3294 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,898 psi | 89% | 3356 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,738 psi | 87% | 3186 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,334 psi | 90% | 3304 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 49,356 psi | 77% | 3330 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,593 psi | 87% | 3225 fps | 97.9% |
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% | 53,708 psi | 84% | 3077 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,126 psi | 80% | 3077 fps | 97.7% |
| Accurate 3100 | <<locked>> | 86% | 35,215 psi | 55% | 2805 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 50,865 psi | 80% | 3084 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,073 psi | 61% | 2927 fps | 98% |
| Accurate High Country | 44.5 gr | 92% | 47,456 psi | 74% | 3196 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 47,688 psi | 75% | 3051 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 46,108 psi | 72% | 3097 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 96% | 50,488 psi | 79% | 3209 fps | 95.3% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 53,287 psi | 84% | 3294 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 46,209 psi | 72% | 3094 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,457 psi | 76% | 3081 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,692 psi | 81% | 3159 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,724 psi | 59% | 2933 fps | 98% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,120 psi | 68% | 3077 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,672 psi | 72% | 3084 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,352 psi | 68% | 3074 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,862 psi | 44% | 2654 fps | 95.5% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,984 psi | 56% | 2917 fps | 96% |
| Alliant Reloder-26 | 40.8 gr | 82% | 31,966 psi | 50% | 2838 fps | 95% |
| Bofors RP15 | <<locked>> | 96% | 45,614 psi | 71% | 3123 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 48,965 psi | 77% | 3094 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,352 psi | 68% | 3074 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,830 psi | 67% | 2946 fps | 95.9% |
| Hodgdon H380 | <<locked>> | 80% | 49,211 psi | 77% | 3104 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 80% | 40,770 psi | 64% | 2972 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 80% | 43,816 psi | 69% | 3002 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,040 psi | 83% | 3199 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,404 psi | 55% | 2818 fps | 98.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,635 psi | 84% | 3205 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,583 psi | 67% | 3133 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 39,987 psi | 63% | 2982 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,267 psi | 43% | 1841 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,169 psi | 79% | 3091 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,243 psi | 82% | 3120 fps | 98.5% |
| IMR 4350 | <<locked>> | 82% | 40,988 psi | 64% | 2923 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,092 psi | 69% | 2976 fps | 96.7% |
| IMR 4831 | <<locked>> | 80% | 37,304 psi | 58% | 2871 fps | 97.6% |
| IMR 4895 | <<locked>> | 80% | 53,026 psi | 83% | 3189 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,025 psi | 82% | 3146 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 98% | 51,430 psi | 81% | 3245 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 50,560 psi | 79% | 3091 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,829 psi | 66% | 2927 fps | 97.5% |
| Lovex S070 | <<locked>> | 80% | 40,059 psi | 63% | 2900 fps | 95.9% |
| Lovex S071 | <<locked>> | 92% | 36,550 psi | 57% | 2838 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 51,068 psi | 80% | 3143 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,514 psi | 73% | 3081 fps | 95.6% |
| Norma MRP | 42.5 gr | 88% | 39,595 psi | 62% | 3018 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 38,740 psi | 61% | 2920 fps | 97.8% |
| Ramshot Big Game | <<locked>> | 80% | 51,605 psi | 81% | 3163 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 48,051 psi | 75% | 3182 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 37,579 psi | 59% | 2900 fps | 95.8% |
| Ramshot Magnum | <<locked>> | 96% | 42,873 psi | 67% | 3041 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 43% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,197 psi | 77% | 3084 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,803 psi | 72% | 3140 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,696 psi | 61% | 2940 fps | 97.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,594 psi | 59% | 2946 fps | 97% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,871 psi | 62% | 3051 fps | 95.4% |
| Rottweil R 902 | <<locked>> | 80% | 52,069 psi | 82% | 3100 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,064 psi | 72% | 3035 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 50,691 psi | 79% | 3130 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 90% | 44,904 psi | 70% | 3068 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 42,830 psi | 67% | 2946 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,829 psi | 66% | 2927 fps | 97.5% |
| Shooters World Precision | <<locked>> | 80% | 50,560 psi | 79% | 3091 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,059 psi | 63% | 2900 fps | 95.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,253 psi | 74% | 3087 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,746 psi | 73% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,727 psi | 64% | 2858 fps | 96% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 44,498 psi | 70% | 3061 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 46,253 psi | 72% | 3031 fps | 99.9% |
| Somchem S361 | <<locked>> | 92% | 52,388 psi | 82% | 3120 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,215 psi | 55% | 2871 fps | 99.5% |
| Somchem S385 | <<locked>> | 88% | 42,554 psi | 67% | 2979 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 52,330 psi | 82% | 3061 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,808 psi | 83% | 3077 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,237 psi | 69% | 2953 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,161 psi | 63% | 2920 fps | 98.2% |
| Vihtavuori N165 | <<locked>> | 92% | 41,930 psi | 66% | 2953 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 51,140 psi | 80% | 3068 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,639 psi | 62% | 2920 fps | 97.8% |
| Vihtavuori N555 | <<locked>> | 80% | 30,647 psi | 48% | 2736 fps | 95.6% |
| Vihtavuori N560 | <<locked>> | 96% | 52,895 psi | 83% | 3284 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,276 psi | 62% | 2884 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 41,089 psi | 64% | 2979 fps | 96% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,237 psi | 41% | 2674 fps | 95.1% |
| Winchester Supreme 780 | <<locked>> | 92% | 45,092 psi | 71% | 3028 fps | 95.4% |
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 .224 | 77gr | Berger LTB. Norma MRP delivers the highest muzzle velocity at 3,373 fps; across all powders the maximum-charge window runs from 2,054 fps to 3,373 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 77.0 gr projectile in 0.224" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, Alliant Reloder-22 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. Alliant Reloder-26, Accurate High Country, Norma MRP rank at the top here: for .223 WSSM with the .224 | 77gr | Berger LTB 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.