Load Specifications
Load data in caliber .243 WSSM with .243 | 71gr | Berger BT M bullet and 91 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Power Pro 2000-MR 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 2015 | <<locked>> | 88% | 57,464 psi | 90% | 3392 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,304 psi | 88% | 3415 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,941 psi | 88% | 3409 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 54,418 psi | 85% | 3419 fps | 100% |
| Accurate 4064 | <<locked>> | 94% | 55,695 psi | 87% | 3448 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 51,808 psi | 81% | 3445 fps | 97.6% |
| Accurate LT-30 | <<locked>> | 82% | 56,231 psi | 88% | 3333 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 56,623 psi | 89% | 3360 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 56,782 psi | 89% | 3488 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 94% | 54,447 psi | 85% | 3419 fps | 98.5% |
| ADI Benchmark 8208 | <<locked>> | 88% | 55,883 psi | 88% | 3442 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 88% | 56,246 psi | 88% | 3428 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 57,290 psi | 90% | 3566 fps | 99.6% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 56,739 psi | 89% | 3612 fps | 98.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 53,911 psi | 84% | 3442 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,174 psi | 90% | 3412 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 54,621 psi | 86% | 3468 fps | 98.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,256 psi | 79% | 3448 fps | 97.5% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,071 psi | 86% | 3570 fps | 99.5% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 55,985 psi | 88% | 3317 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 57,101 psi | 89% | 3501 fps | 98.6% |
| Bofors RP3 | <<locked>> | 94% | 54,578 psi | 86% | 3458 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,476 psi | 85% | 3369 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,158 psi | 86% | 3465 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 86% | 57,029 psi | 89% | 3576 fps | 99% |
| Hodgdon H322 | <<locked>> | 84% | 56,434 psi | 88% | 3448 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,998 psi | 85% | 3409 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,028 psi | 88% | 3468 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 90% | 57,305 psi | 90% | 3504 fps | 99.6% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,383 psi | 73% | 3307 fps | 98.1% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 56,637 psi | 89% | 3530 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 54% | 2175 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 55,274 psi | 87% | 3448 fps | 99.3% |
| IMR 3031 | <<locked>> | 90% | 56,826 psi | 89% | 3497 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 57,348 psi | 90% | 3465 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,609 psi | 90% | 3432 fps | 95.9% |
| IMR 4198 | <<locked>> | 84% | 56,724 psi | 89% | 3363 fps | 100% |
| IMR 4831ᴾ | <<locked>> | 100% | 49,124 psi | 77% | 3373 fps | 97.1% |
| IMR 4895 | <<locked>> | 92% | 55,999 psi | 88% | 3507 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 88% | 55,883 psi | 88% | 3442 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 84% | 56,391 psi | 88% | 3425 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,565 psi | 89% | 3468 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 56,579 psi | 89% | 3412 fps | 99.2% |
| Lovex S062 | <<locked>> | 94% | 57,000 psi | 89% | 3461 fps | 99.8% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3438 fps | 97.1% |
| Norma 201 | <<locked>> | 90% | 55,448 psi | 87% | 3428 fps | 99.7% |
| Norma 202 | <<locked>> | 90% | 55,811 psi | 87% | 3435 fps | 100% |
| Norma 203B | <<locked>> | 94% | 57,696 psi | 90% | 3520 fps | 99.4% |
| Norma URPᴾ | <<locked>> | 100% | 51,111 psi | 80% | 3432 fps | 97.4% |
| Ramshot Big Game | <<locked>> | 92% | 54,636 psi | 86% | 3478 fps | 98.9% |
| Ramshot TAC | <<locked>> | 88% | 56,782 psi | 89% | 3445 fps | 97.3% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,086 psi | 88% | 3471 fps | 99.1% |
| Ramshot X-Terminator | <<locked>> | 86% | 57,101 psi | 89% | 3435 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,041 psi | 55% | 2224 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,376 psi | 87% | 3425 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,521 psi | 89% | 3442 fps | 96.4% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,071 psi | 86% | 3547 fps | 98.7% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 54,708 psi | 86% | 3576 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,561 psi | 81% | 3461 fps | 97.3% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,141 psi | 82% | 3484 fps | 96.8% |
| Rottweil R 901 | <<locked>> | 88% | 56,420 psi | 88% | 3422 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 55,869 psi | 88% | 3425 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 96% | 54,404 psi | 85% | 3445 fps | 99.4% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3438 fps | 97.1% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,565 psi | 89% | 3468 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 57,000 psi | 89% | 3461 fps | 99.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,216 psi | 87% | 3386 fps | 99.5% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,391 psi | 88% | 3514 fps | 99.2% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 54,549 psi | 85% | 3383 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 54,650 psi | 86% | 3412 fps | 97.4% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,434 psi | 87% | 3451 fps | 99.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,450 psi | 90% | 3379 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 57,493 psi | 90% | 3366 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,130 psi | 90% | 3383 fps | 95.8% |
| Somchem S321 | <<locked>> | 86% | 57,595 psi | 90% | 3481 fps | 99.9% |
| Somchem S335 | <<locked>> | 90% | 56,478 psi | 89% | 3366 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,418 psi | 85% | 3409 fps | 98.9% |
| Somchem S355 | <<locked>> | 96% | 54,795 psi | 86% | 3448 fps | 99.3% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,818 psi | 72% | 3373 fps | 99.2% |
| Vihtavuori N130 | <<locked>> | 86% | 56,782 psi | 89% | 3340 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 57,435 psi | 90% | 3363 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,085 psi | 86% | 3396 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,710 psi | 89% | 3415 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,536 psi | 89% | 3425 fps | 99.9% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 53,824 psi | 84% | 3435 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 88% | 56,434 psi | 88% | 3438 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 92% | 55,056 psi | 86% | 3402 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,939 psi | 83% | 3435 fps | 97.5% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,013 psi | 86% | 3419 fps | 99.5% |
| Winchester 748 | <<locked>> | 88% | 56,260 psi | 88% | 3494 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 90% | 55,376 psi | 87% | 3461 fps | 99.4% |
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% | 44,701 psi | 70% | 3173 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 48,863 psi | 77% | 3287 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 37,376 psi | 59% | 3054 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,135 psi | 69% | 3225 fps | 99.4% |
| Accurate 4064 | <<locked>> | 80% | 35,317 psi | 55% | 3028 fps | 98.5% |
| Accurate 4350 | <<locked>> | 94% | 41,974 psi | 66% | 3238 fps | 95% |
| Accurate LT-30 | <<locked>> | 80% | 52,779 psi | 83% | 3274 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 53,156 psi | 83% | 3301 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,191 psi | 65% | 3163 fps | 96.2% |
| ADI AR 2208 | <<locked>> | 86% | 42,351 psi | 66% | 3169 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,236 psi | 68% | 3189 fps | 98% |
| Alliant AR-Comp | <<locked>> | 80% | 42,714 psi | 67% | 3202 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,241 psi | 79% | 3432 fps | 98.7% |
| Alliant Power Pro 2000-MR | 41.3 gr | 84% | 42,960 psi | 67% | 3310 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 36,666 psi | 57% | 3064 fps | 95.8% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,314 psi | 79% | 3297 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 39,494 psi | 62% | 3136 fps | 95% |
| Alliant Reloder-16 | <<locked>> | 96% | 44,309 psi | 69% | 3314 fps | 95.9% |
| Alliant Reloder-17 | 42.6 gr | 88% | 39,102 psi | 61% | 3212 fps | 96% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 52,431 psi | 82% | 3258 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 43,279 psi | 68% | 3222 fps | 95.6% |
| Bofors RP3 | <<locked>> | 82% | 36,158 psi | 57% | 3058 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,005 psi | 71% | 3186 fps | 98.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 41,829 psi | 66% | 3199 fps | 98.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 45,890 psi | 72% | 3356 fps | 96.9% |
| Hodgdon H322 | <<locked>> | 80% | 49,501 psi | 78% | 3330 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,343 psi | 79% | 3343 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 45,818 psi | 72% | 3271 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 41,524 psi | 65% | 3179 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 38,101 psi | 60% | 3114 fps | 95.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,362 psi | 59% | 3123 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,744 psi | 40% | 1949 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 39,987 psi | 63% | 3127 fps | 96.4% |
| IMR 3031 | <<locked>> | 80% | 40,799 psi | 64% | 3199 fps | 99.9% |
| IMR 4064 | <<locked>> | 82% | 39,117 psi | 61% | 3087 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 90% | 54,157 psi | 85% | 3366 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 50,560 psi | 79% | 3264 fps | 100% |
| IMR 4831 | <<locked>> | 96% | 43,047 psi | 67% | 3241 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 37,884 psi | 59% | 3110 fps | 95.2% |
| IMR 8208 XBR | <<locked>> | 80% | 43,236 psi | 68% | 3189 fps | 98% |
| Lovex D073.5 | <<locked>> | 80% | 48,950 psi | 77% | 3294 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 39,929 psi | 63% | 3140 fps | 98.7% |
| Lovex S060 | <<locked>> | 80% | 41,553 psi | 65% | 3104 fps | 96.4% |
| Lovex S062 | <<locked>> | 80% | 36,550 psi | 57% | 3031 fps | 96.3% |
| Lovex S065 | <<locked>> | 96% | 49,588 psi | 78% | 3314 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 40,350 psi | 63% | 3117 fps | 97.4% |
| Norma 202 | <<locked>> | 80% | 40,538 psi | 64% | 3136 fps | 99.2% |
| Norma 203B | <<locked>> | 82% | 38,827 psi | 61% | 3127 fps | 95.5% |
| Norma URP | <<locked>> | 96% | 44,817 psi | 70% | 3301 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 82% | 38,566 psi | 60% | 3133 fps | 95.1% |
| Ramshot TAC | <<locked>> | 84% | 49,647 psi | 78% | 3310 fps | 95.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,511 psi | 67% | 3196 fps | 96.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 46,949 psi | 74% | 3241 fps | 97.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,136 psi | 41% | 2001 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,486 psi | 76% | 3297 fps | 99.7% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 52,779 psi | 83% | 3373 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 41,379 psi | 65% | 3258 fps | 95.6% |
| ReloadSwiss RS 60 | 38.7 gr | 80% | 31,676 psi | 50% | 3002 fps | 95.3% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 44,802 psi | 70% | 3320 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 48,559 psi | 76% | 3409 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 44,295 psi | 69% | 3192 fps | 99.5% |
| Rottweil R 902 | <<locked>> | 80% | 38,421 psi | 60% | 3058 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 84% | 36,318 psi | 57% | 3054 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 96% | 49,588 psi | 78% | 3314 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 39,929 psi | 63% | 3140 fps | 98.7% |
| Shooters World Precision | <<locked>> | 80% | 36,550 psi | 57% | 3031 fps | 96.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,416 psi | 81% | 3317 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 40,422 psi | 63% | 3186 fps | 95.9% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,097 psi | 80% | 3323 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 44,498 psi | 70% | 3205 fps | 95% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 39,798 psi | 62% | 3123 fps | 95.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 41,829 psi | 66% | 3087 fps | 99.4% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,534 psi | 54% | 2917 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 53,447 psi | 84% | 3320 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 46,760 psi | 73% | 3281 fps | 98.9% |
| Somchem S335 | <<locked>> | 80% | 41,452 psi | 65% | 3087 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 41,104 psi | 64% | 3136 fps | 96.1% |
| Somchem S355 | <<locked>> | 84% | 37,362 psi | 59% | 3071 fps | 95.6% |
| Somchem S365 | <<locked>> | 90% | 32,837 psi | 51% | 3031 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 47,282 psi | 74% | 3182 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,989 psi | 66% | 3094 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,434 psi | 59% | 3058 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 38,319 psi | 60% | 3058 fps | 99.1% |
| Vihtavuori N150 | <<locked>> | 82% | 33,243 psi | 52% | 2933 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 94% | 44,179 psi | 69% | 3245 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 43,265 psi | 68% | 3182 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 80% | 36,999 psi | 58% | 3035 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 94% | 43,366 psi | 68% | 3238 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 36,651 psi | 57% | 3022 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 42,511 psi | 67% | 3225 fps | 98.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 39,102 psi | 61% | 3120 fps | 96.3% |
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 91 powders for .243 WSSM loaded with the .243 | 71gr | Berger BT M. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,612 fps; across all powders the maximum-charge window runs from 2,175 fps to 3,612 fps. Accurate 4350 gives the best case fill at 100 %, and 91 of the 91 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 71.0 gr projectile in 0.243" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Hodgdon Hybrid 100V 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 60, Alliant Power Pro 2000-MR, Alliant Reloder-17 rank at the top here: for .243 WSSM with the .243 | 71gr | Berger BT M 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.