Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 70gr | Merlin Virtus 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 70, ReloadSwiss RS 60 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>> | 84% | 57,479 psi | 90% | 3465 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,463 psi | 88% | 3474 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,955 psi | 86% | 3494 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 55,985 psi | 88% | 3465 fps | 95.8% |
| Accurate 4064 | <<locked>> | 90% | 56,739 psi | 89% | 3527 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 54,085 psi | 85% | 3550 fps | 98.7% |
| ADI AR 2206H | <<locked>> | 86% | 57,072 psi | 89% | 3573 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 90% | 54,694 psi | 86% | 3501 fps | 99.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,854 psi | 88% | 3517 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 84% | 57,000 psi | 89% | 3497 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 53,722 psi | 84% | 3629 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 55,042 psi | 86% | 3530 fps | 99.9% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,477 psi | 87% | 3556 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 98% | 55,274 psi | 87% | 3625 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 94% | 56,811 psi | 89% | 3668 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 42,279 psi | 66% | 3343 fps | 98.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,341 psi | 76% | 3543 fps | 97.6% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 57,522 psi | 90% | 3579 fps | 99.2% |
| Bofors RP3 | <<locked>> | 90% | 55,637 psi | 87% | 3543 fps | 99.9% |
| Bofors RP7 | <<locked>> | 94% | 55,970 psi | 88% | 3507 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,406 psi | 90% | 3501 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,738 psi | 87% | 3540 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,782 psi | 89% | 3560 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 96% | 57,203 psi | 90% | 3612 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 86% | 57,725 psi | 90% | 3583 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 55,259 psi | 87% | 3537 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 54,027 psi | 85% | 3550 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,404 psi | 55% | 2287 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 55,274 psi | 87% | 3520 fps | 99.7% |
| IMR 3031 | <<locked>> | 84% | 53,925 psi | 85% | 3510 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 57,580 psi | 90% | 3550 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 88% | 57,653 psi | 90% | 3524 fps | 97% |
| IMR 4350 | <<locked>> | 98% | 56,579 psi | 89% | 3530 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 54,215 psi | 85% | 3481 fps | 96.2% |
| IMR 4831 | <<locked>> | 98% | 54,940 psi | 86% | 3543 fps | 98.9% |
| IMR 4895 | <<locked>> | 88% | 56,942 psi | 89% | 3593 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 84% | 55,854 psi | 88% | 3517 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 86% | 57,101 psi | 89% | 3540 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,202 psi | 88% | 3488 fps | 99.6% |
| Lovex S062 | <<locked>> | 90% | 57,740 psi | 90% | 3550 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 57,377 psi | 90% | 3537 fps | 98.2% |
| Lovex S070 | <<locked>> | 96% | 54,752 psi | 86% | 3504 fps | 96.7% |
| Norma 201 | <<locked>> | 86% | 55,622 psi | 87% | 3507 fps | 99.9% |
| Norma 202 | <<locked>> | 86% | 56,246 psi | 88% | 3510 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,679 psi | 86% | 3537 fps | 99.5% |
| Norma URP | <<locked>> | 98% | 56,811 psi | 89% | 3606 fps | 99% |
| Ramshot Big Game | <<locked>> | 88% | 55,883 psi | 88% | 3563 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 98% | 56,115 psi | 88% | 3596 fps | 97.7% |
| Ramshot TAC | <<locked>> | 84% | 56,420 psi | 88% | 3524 fps | 98.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 56,362 psi | 88% | 3550 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,695 psi | 89% | 3507 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,679 psi | 56% | 2336 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 57,058 psi | 89% | 3533 fps | 97.5% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,072 psi | 88% | 3632 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 56,536 psi | 89% | 3675 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 54,099 psi | 85% | 3566 fps | 98.5% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 57,580 psi | 90% | 3678 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 84% | 56,028 psi | 88% | 3494 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,217 psi | 88% | 3507 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,840 psi | 88% | 3540 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 94% | 55,970 psi | 88% | 3507 fps | 96.1% |
| Shooters World Long Rifle | <<locked>> | 96% | 57,377 psi | 90% | 3537 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 86% | 57,101 psi | 89% | 3540 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,740 psi | 90% | 3550 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 54,752 psi | 86% | 3504 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 54,041 psi | 85% | 3540 fps | 99.4% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,998 psi | 86% | 3494 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,564 psi | 87% | 3527 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,797 psi | 89% | 3445 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 54,099 psi | 85% | 3383 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,624 psi | 90% | 3481 fps | 97.1% |
| Somchem S321 | <<locked>> | 82% | 57,348 psi | 90% | 3547 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,463 psi | 88% | 3438 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,578 psi | 86% | 3488 fps | 99.5% |
| Somchem S355 | <<locked>> | 92% | 55,840 psi | 88% | 3533 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 3609 fps | 100% |
| Vihtavuori N130 | <<locked>> | 82% | 56,188 psi | 88% | 3406 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 57,130 psi | 90% | 3428 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,159 psi | 88% | 3474 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,159 psi | 90% | 3488 fps | 100% |
| Vihtavuori N150 | <<locked>> | 94% | 57,493 psi | 90% | 3510 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 55,608 psi | 87% | 3537 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 84% | 56,449 psi | 88% | 3517 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,550 psi | 87% | 3474 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 54,955 psi | 86% | 3540 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,847 psi | 73% | 3435 fps | 98% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,173 psi | 88% | 3507 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 57,000 psi | 89% | 3570 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 57,203 psi | 90% | 3612 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,043 psi | 60% | 3327 fps | 97.8% |
| Winchester StaBALL Match | <<locked>> | 86% | 55,898 psi | 88% | 3540 fps | 99.8% |
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% | 50,575 psi | 79% | 3350 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 42,859 psi | 67% | 3228 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,053 psi | 80% | 3425 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 52,417 psi | 82% | 3396 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 40,567 psi | 64% | 3212 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 40,335 psi | 63% | 3251 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 46,876 psi | 73% | 3369 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 39,697 psi | 62% | 3173 fps | 95.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,037 psi | 77% | 3386 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 49,792 psi | 78% | 3383 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,192 psi | 68% | 3389 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,537 psi | 62% | 3199 fps | 97.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,438 psi | 67% | 3274 fps | 96.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 39,682 psi | 62% | 3264 fps | 95.4% |
| Alliant Reloder-17 | 47.4 gr | 82% | 36,883 psi | 58% | 3212 fps | 96.2% |
| Alliant Reloder-23 | <<locked>> | 94% | 34,693 psi | 54% | 3130 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 96% | 41,655 psi | 65% | 3376 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,456 psi | 73% | 3360 fps | 97.4% |
| Bofors RP3 | <<locked>> | 80% | 39,320 psi | 62% | 3196 fps | 97.5% |
| Bofors RP7 | <<locked>> | 92% | 52,373 psi | 82% | 3438 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,473 psi | 79% | 3376 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,501 psi | 76% | 3402 fps | 99.7% |
| Hodgdon H380 | <<locked>> | 82% | 43,076 psi | 68% | 3274 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 92% | 49,632 psi | 78% | 3461 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 47,326 psi | 74% | 3383 fps | 98.8% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 34,301 psi | 54% | 3068 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,816 psi | 69% | 3337 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,295 psi | 41% | 2054 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 45,281 psi | 71% | 3317 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 47,123 psi | 74% | 3386 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,684 psi | 65% | 3222 fps | 96.8% |
| IMR 4166 Enduron | <<locked>> | 84% | 50,386 psi | 79% | 3379 fps | 95.4% |
| IMR 4350 | <<locked>> | 96% | 52,982 psi | 83% | 3461 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 90% | 50,821 psi | 80% | 3412 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 38,856 psi | 61% | 3196 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 43,526 psi | 68% | 3317 fps | 97.7% |
| IMR 8208 XBR | <<locked>> | 80% | 49,037 psi | 77% | 3386 fps | 99.5% |
| Lovex D073.6 | <<locked>> | 80% | 46,195 psi | 72% | 3337 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 46,572 psi | 73% | 3297 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 41,582 psi | 65% | 3225 fps | 98.4% |
| Lovex S065 | <<locked>> | 88% | 44,135 psi | 69% | 3268 fps | 95.1% |
| Lovex S070 | <<locked>> | 92% | 48,240 psi | 76% | 3376 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 45,527 psi | 71% | 3307 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 46,282 psi | 73% | 3327 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,829 psi | 66% | 3264 fps | 97.2% |
| Norma URP | <<locked>> | 88% | 40,466 psi | 63% | 3255 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 41,930 psi | 66% | 3278 fps | 97.1% |
| Ramshot Hunter | <<locked>> | 92% | 45,542 psi | 71% | 3376 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 49,124 psi | 77% | 3376 fps | 96.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,892 psi | 77% | 3406 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 53,200 psi | 83% | 3445 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,397 psi | 41% | 2096 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 46,644 psi | 73% | 3327 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,150 psi | 71% | 3402 fps | 97.4% |
| ReloadSwiss RS 60 | 46.2 gr | 80% | 36,477 psi | 57% | 3222 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 40,364 psi | 63% | 3268 fps | 95% |
| ReloadSwiss RS 70 | 52.8 gr | 90% | 43,033 psi | 67% | 3356 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 49,443 psi | 77% | 3373 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,294 psi | 68% | 3245 fps | 98.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,753 psi | 58% | 3120 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 92% | 52,373 psi | 82% | 3438 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 88% | 44,135 psi | 69% | 3268 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,195 psi | 72% | 3337 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 41,582 psi | 65% | 3225 fps | 98.4% |
| Shooters World SW4350 | <<locked>> | 92% | 48,240 psi | 76% | 3376 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,043 psi | 60% | 3182 fps | 95.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,529 psi | 74% | 3346 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,397 psi | 71% | 3320 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 46,905 psi | 74% | 3268 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,146 psi | 61% | 3094 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 50,328 psi | 79% | 3343 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 53,388 psi | 84% | 3474 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 46,485 psi | 73% | 3261 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,239 psi | 74% | 3343 fps | 98.4% |
| Somchem S355 | <<locked>> | 80% | 37,492 psi | 59% | 3133 fps | 96.4% |
| Somchem S365 | <<locked>> | 84% | 31,270 psi | 49% | 3035 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 52,910 psi | 83% | 3353 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 47,340 psi | 74% | 3264 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,033 psi | 67% | 3238 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,729 psi | 69% | 3241 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 35,781 psi | 56% | 3058 fps | 97.4% |
| Vihtavuori N160 | <<locked>> | 88% | 42,235 psi | 66% | 3261 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 49,313 psi | 77% | 3383 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 42,453 psi | 67% | 3222 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 41,756 psi | 65% | 3258 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 94% | 38,043 psi | 60% | 3225 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 34,171 psi | 54% | 3018 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 49,530 psi | 78% | 3435 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 49,966 psi | 78% | 3471 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 98% | 35,534 psi | 56% | 3241 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,223 psi | 71% | 3327 fps | 98.6% |
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 91 powders for .240 Weath. Mag. loaded with the .243 | 70gr | Merlin Virtus. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,678 fps; across all powders the maximum-charge window runs from 2,287 fps to 3,678 fps. Alliant Reloder-23 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 55–90 %, leaving at least 10 % headroom. The 70.0 gr projectile in 0.243" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, Alliant Reloder-26, 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 70, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .240 Weath. Mag. with the .243 | 70gr | Merlin Virtus 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.