Load Specifications
Load data in caliber .243 WSSM with .243 | 85gr | Barnes X BT bullet and 92 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-17 and ReloadSwiss RS 60.
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 2015 | <<locked>> | 82% | 57,145 psi | 90% | 3104 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,667 psi | 90% | 3143 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 54,781 psi | 86% | 3117 fps | 96.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,921 psi | 75% | 3081 fps | 96.8% |
| Accurate 4064 | <<locked>> | 88% | 57,522 psi | 90% | 3192 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,782 psi | 89% | 3271 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 55,869 psi | 88% | 3209 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,855 psi | 89% | 3205 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,534 psi | 85% | 3150 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,028 psi | 88% | 3133 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,434 psi | 87% | 3330 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,406 psi | 90% | 3235 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,317 psi | 85% | 3199 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,942 psi | 89% | 3327 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,491 psi | 85% | 3301 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,672 psi | 70% | 3104 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,415 psi | 79% | 3291 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,796 psi | 87% | 3219 fps | 99.5% |
| Bofors RP3 | <<locked>> | 88% | 55,143 psi | 86% | 3202 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 54,563 psi | 86% | 3156 fps | 96.6% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,883 psi | 88% | 3130 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,679 psi | 86% | 3186 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,419 psi | 87% | 3205 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 94% | 55,085 psi | 86% | 3255 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 92% | 55,216 psi | 87% | 3209 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 84% | 56,405 psi | 88% | 3219 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3245 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,072 psi | 88% | 3251 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,666 psi | 87% | 3287 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,100 psi | 57% | 2011 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,290 psi | 90% | 3215 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,594 psi | 89% | 3202 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,405 psi | 88% | 3189 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,796 psi | 87% | 3156 fps | 97.4% |
| IMR 4350 | <<locked>> | 96% | 54,839 psi | 86% | 3182 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,014 psi | 88% | 3186 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 56,768 psi | 89% | 3255 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 55,637 psi | 87% | 3232 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 82% | 54,534 psi | 85% | 3150 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,492 psi | 89% | 3186 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 54,998 psi | 86% | 3127 fps | 99.8% |
| Lovex S062 | <<locked>> | 88% | 56,898 psi | 89% | 3192 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,217 psi | 88% | 3189 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 57,072 psi | 89% | 3222 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 55,230 psi | 87% | 3156 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,390 psi | 87% | 3153 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,261 psi | 90% | 3245 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,632 psi | 78% | 3228 fps | 96.1% |
| Norma URP | <<locked>> | 96% | 55,013 psi | 86% | 3248 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 57,653 psi | 90% | 3268 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 57,464 psi | 90% | 3301 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 54,998 psi | 86% | 3166 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,694 psi | 86% | 3189 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,738 psi | 58% | 2057 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,521 psi | 87% | 3179 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,795 psi | 86% | 3271 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,331 psi | 85% | 3307 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,101 psi | 88% | 3287 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,158 psi | 86% | 3314 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 82% | 56,333 psi | 88% | 3140 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,637 psi | 87% | 3153 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,940 psi | 86% | 3189 fps | 100% |
| Rottweil R 907 | <<locked>> | 92% | 54,563 psi | 86% | 3156 fps | 96.6% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,217 psi | 88% | 3189 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,492 psi | 89% | 3186 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,898 psi | 89% | 3192 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,072 psi | 89% | 3222 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,999 psi | 88% | 3248 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,319 psi | 90% | 3202 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,580 psi | 90% | 3228 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,680 psi | 87% | 3081 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,072 psi | 88% | 3077 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,188 psi | 88% | 3130 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 55,709 psi | 87% | 3081 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,826 psi | 89% | 3196 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,143 psi | 86% | 3189 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,145 psi | 90% | 3314 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,084 psi | 83% | 3176 fps | 96.3% |
| Vihtavuori N133 | <<locked>> | 84% | 55,840 psi | 88% | 3064 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,405 psi | 87% | 3117 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,767 psi | 87% | 3127 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,144 psi | 88% | 3156 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,450 psi | 90% | 3245 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 55,027 psi | 86% | 3150 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,421 psi | 90% | 3173 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,913 psi | 89% | 3255 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,734 psi | 78% | 3196 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,653 psi | 90% | 3215 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,390 psi | 87% | 3205 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,477 psi | 87% | 3261 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,379 psi | 63% | 3120 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 84% | 54,215 psi | 85% | 3179 fps | 99.9% |
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 2015 | <<locked>> | 80% | 53,780 psi | 84% | 3054 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,950 psi | 75% | 2992 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,285 psi | 80% | 3054 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 41,887 psi | 66% | 2956 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,295 psi | 71% | 2989 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 36,114 psi | 57% | 2851 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,588 psi | 78% | 3094 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 42,105 psi | 66% | 2923 fps | 97.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,430 psi | 81% | 3097 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 52,489 psi | 82% | 3084 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,469 psi | 71% | 3133 fps | 98.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,496 psi | 67% | 2959 fps | 99% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,353 psi | 71% | 3028 fps | 98.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 37,362 psi | 59% | 2907 fps | 95.8% |
| Alliant Reloder-17 | 38.4 gr | 80% | 37,043 psi | 58% | 2927 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 88% | 31,415 psi | 49% | 2756 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,319 psi | 60% | 3009 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,907 psi | 77% | 3094 fps | 98.7% |
| Bofors RP3 | <<locked>> | 80% | 42,859 psi | 67% | 2972 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 48,428 psi | 76% | 3038 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,692 psi | 83% | 3077 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,184 psi | 80% | 3127 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,236 psi | 68% | 2969 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 88% | 45,556 psi | 71% | 3071 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 90% | 51,996 psi | 81% | 3150 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 50,096 psi | 79% | 3107 fps | 99.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,937 psi | 48% | 2687 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,122 psi | 72% | 3071 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 90% | 48,573 psi | 76% | 3153 fps | 95.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,006 psi | 42% | 1798 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,805 psi | 75% | 3048 fps | 99.5% |
| IMR 3031 | <<locked>> | 80% | 50,212 psi | 79% | 3100 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,251 psi | 69% | 2959 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,775 psi | 73% | 2982 fps | 95.4% |
| IMR 4350 | <<locked>> | 92% | 48,704 psi | 76% | 3068 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,992 psi | 74% | 3015 fps | 95.4% |
| IMR 4831 | <<locked>> | 84% | 36,956 psi | 58% | 2858 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,456 psi | 73% | 3061 fps | 99.1% |
| IMR 8208 XBR | <<locked>> | 80% | 51,430 psi | 81% | 3097 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 49,632 psi | 78% | 3077 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,849 psi | 77% | 3015 fps | 99.3% |
| Lovex S062 | <<locked>> | 80% | 44,802 psi | 70% | 2972 fps | 99.5% |
| Lovex S065 | <<locked>> | 84% | 41,916 psi | 66% | 2910 fps | 95.6% |
| Lovex S070 | <<locked>> | 88% | 45,092 psi | 71% | 2995 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 48,994 psi | 77% | 3048 fps | 99.8% |
| Norma 202 | <<locked>> | 80% | 49,037 psi | 77% | 3048 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,759 psi | 70% | 3015 fps | 98.8% |
| Norma MRP | <<locked>> | 98% | 46,673 psi | 73% | 3169 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 38,000 psi | 60% | 2900 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 44,382 psi | 70% | 3025 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 41,959 psi | 66% | 2999 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 51,590 psi | 81% | 3104 fps | 98% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,256 psi | 80% | 3127 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 43% | 1847 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,366 psi | 68% | 2943 fps | 95.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,022 psi | 75% | 3143 fps | 98.8% |
| ReloadSwiss RS 60 | 38.4 gr | 80% | 39,204 psi | 61% | 2999 fps | 99.7% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,913 psi | 59% | 2920 fps | 95.5% |
| ReloadSwiss RS 70 | 41.9 gr | 86% | 39,711 psi | 62% | 2979 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 53,417 psi | 84% | 3091 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,847 psi | 73% | 2995 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 40,451 psi | 63% | 2910 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 48,428 psi | 76% | 3038 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,916 psi | 66% | 2910 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,632 psi | 78% | 3077 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,802 psi | 70% | 2972 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 88% | 45,092 psi | 71% | 2995 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,785 psi | 64% | 2953 fps | 97.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,517 psi | 79% | 3084 fps | 98.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,964 psi | 75% | 3058 fps | 99.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,588 psi | 78% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,785 psi | 65% | 2835 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,601 psi | 73% | 2956 fps | 95.4% |
| Somchem S335 | <<locked>> | 80% | 49,530 psi | 78% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,864 psi | 78% | 3074 fps | 99.4% |
| Somchem S355 | <<locked>> | 80% | 40,901 psi | 64% | 2910 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 30,501 psi | 48% | 2733 fps | 96.5% |
| Somchem S385 | <<locked>> | 98% | 49,951 psi | 78% | 3120 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 49,792 psi | 78% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,296 psi | 73% | 2969 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,514 psi | 73% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,914 psi | 61% | 2838 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 37,072 psi | 58% | 2841 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 51,764 psi | 81% | 3094 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,078 psi | 71% | 2963 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,709 psi | 58% | 2841 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 34,214 psi | 54% | 2848 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,490 psi | 54% | 2749 fps | 96.8% |
| Winchester 748 | <<locked>> | 80% | 51,779 psi | 81% | 3146 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 45,861 psi | 72% | 3077 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,821 psi | 50% | 2848 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,819 psi | 75% | 3064 fps | 99.5% |
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 92 powders for .243 WSSM loaded with the .243 | 85gr | Barnes X BT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,330 fps; across all powders the maximum-charge window runs from 2,011 fps to 3,330 fps. Accurate 3100 gives the best case fill at 100 %, and 92 of the 92 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 85.0 gr projectile in 0.243" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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-17, ReloadSwiss RS 60 rank at the top here: for .243 WSSM with the .243 | 85gr | Barnes X BT 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.