Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 81gr | Peregrine Glider GRM bullet and 98 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-16, ReloadSwiss RS 70 and Ramshot Hunter.
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% | 56,884 psi | 89% | 3238 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,666 psi | 89% | 3264 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,245 psi | 87% | 3264 fps | 97% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,385 psi | 76% | 3209 fps | 97.3% |
| Accurate 4064 | <<locked>> | 88% | 56,840 psi | 89% | 3320 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,186 psi | 85% | 3356 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 84% | 56,666 psi | 89% | 3356 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,302 psi | 85% | 3297 fps | 99.7% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,014 psi | 88% | 3399 fps | 96.3% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,245 psi | 87% | 3301 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,782 psi | 89% | 3274 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,276 psi | 90% | 3494 fps | 99.9% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 55,941 psi | 88% | 3392 fps | 96.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,027 psi | 86% | 3327 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,332 psi | 87% | 3350 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,143 psi | 86% | 3428 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 56,753 psi | 89% | 3465 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,114 psi | 86% | 3379 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,469 psi | 71% | 3238 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 52,605 psi | 82% | 3451 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,000 psi | 89% | 3373 fps | 99.7% |
| Bofors RP3 | <<locked>> | 88% | 55,521 psi | 87% | 3337 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,259 psi | 87% | 3307 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,811 psi | 89% | 3284 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,376 psi | 87% | 3327 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,231 psi | 88% | 3353 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 94% | 56,985 psi | 89% | 3419 fps | 98.1% |
| Hodgdon H4350 | <<locked>> | 92% | 57,029 psi | 89% | 3376 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 84% | 57,290 psi | 90% | 3369 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,361 psi | 87% | 3343 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 57,682 psi | 90% | 3406 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,505 psi | 84% | 3379 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,766 psi | 56% | 2129 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 54,737 psi | 86% | 3310 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,740 psi | 90% | 3353 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,174 psi | 90% | 3340 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 86% | 56,869 psi | 89% | 3317 fps | 98% |
| IMR 4350 | <<locked>> | 96% | 56,405 psi | 88% | 3340 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,421 psi | 90% | 3350 fps | 98% |
| IMR 4831 | <<locked>> | 96% | 54,737 psi | 86% | 3346 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 56,782 psi | 89% | 3386 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,245 psi | 87% | 3301 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,724 psi | 89% | 3323 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,709 psi | 87% | 3278 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 57,101 psi | 89% | 3330 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,869 psi | 89% | 3337 fps | 99% |
| Lovex S070 | <<locked>> | 94% | 54,781 psi | 86% | 3320 fps | 97.9% |
| Norma 201 | <<locked>> | 84% | 55,042 psi | 86% | 3291 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,043 psi | 88% | 3297 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,578 psi | 86% | 3333 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 57,319 psi | 90% | 3396 fps | 96.4% |
| Norma MRPᴾ | <<locked>> | 100% | 51,590 psi | 81% | 3396 fps | 97.1% |
| Norma URP | <<locked>> | 96% | 56,840 psi | 89% | 3406 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 86% | 55,332 psi | 87% | 3356 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 55,782 psi | 87% | 3396 fps | 98.6% |
| Ramshot TAC | <<locked>> | 82% | 55,608 psi | 87% | 3314 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,637 psi | 87% | 3337 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,158 psi | 57% | 2175 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,536 psi | 89% | 3337 fps | 98.5% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,898 psi | 88% | 3422 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,289 psi | 88% | 3461 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,360 psi | 85% | 3379 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 57,363 psi | 90% | 3481 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 82% | 55,796 psi | 87% | 3278 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,695 psi | 87% | 3294 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 55,709 psi | 87% | 3333 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,085 psi | 85% | 3363 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 92% | 55,259 psi | 87% | 3307 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,869 psi | 89% | 3337 fps | 99% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,724 psi | 89% | 3323 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,101 psi | 89% | 3330 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 54,781 psi | 86% | 3320 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 57,537 psi | 90% | 3399 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,288 psi | 85% | 3287 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,042 psi | 86% | 3317 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,420 psi | 88% | 3232 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,305 psi | 90% | 3225 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,087 psi | 89% | 3284 fps | 98.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 53,592 psi | 84% | 3353 fps | 96% |
| Somchem S335 | <<locked>> | 84% | 55,782 psi | 87% | 3222 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 53,925 psi | 85% | 3278 fps | 99.8% |
| Somchem S355 | <<locked>> | 90% | 55,506 psi | 87% | 3327 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 55,637 psi | 87% | 3406 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 3337 fps | 97.2% |
| Vihtavuori N133 | <<locked>> | 84% | 56,840 psi | 89% | 3212 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,014 psi | 88% | 3258 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 56,797 psi | 89% | 3274 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,276 psi | 90% | 3304 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,550 psi | 87% | 3343 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 82% | 55,825 psi | 87% | 3301 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 54,752 psi | 86% | 3258 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,694 psi | 86% | 3343 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 50,662 psi | 79% | 3327 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 55,796 psi | 87% | 3310 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,550 psi | 89% | 3356 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,348 psi | 90% | 3422 fps | 98.2% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,988 psi | 64% | 3258 fps | 99.7% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,274 psi | 87% | 3330 fps | 100% |
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% | 53,417 psi | 84% | 3186 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,963 psi | 72% | 3091 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,254 psi | 76% | 3130 fps | 95.3% |
| Accurate 3100 | <<locked>> | 96% | 41,959 psi | 66% | 3074 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 43,497 psi | 68% | 3084 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 37,782 psi | 59% | 3012 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 49,792 psi | 78% | 3232 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 42,105 psi | 66% | 3051 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 98% | 52,199 psi | 82% | 3323 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,967 psi | 81% | 3241 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,142 psi | 83% | 3219 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,006 psi | 72% | 3271 fps | 98.7% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,156 psi | 82% | 3323 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,235 psi | 66% | 3077 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,339 psi | 71% | 3156 fps | 98.6% |
| Alliant Reloder-16 | 42.4 gr | 82% | 34,867 psi | 55% | 2959 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 80% | 36,709 psi | 58% | 3038 fps | 97.6% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,416 psi | 81% | 3310 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 32,561 psi | 51% | 2907 fps | 95.9% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,624 psi | 61% | 3130 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,559 psi | 78% | 3235 fps | 99% |
| Bofors RP3 | <<locked>> | 80% | 42,032 psi | 66% | 3077 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 48,791 psi | 76% | 3182 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,185 psi | 83% | 3225 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,430 psi | 81% | 3261 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,830 psi | 67% | 3087 fps | 97% |
| Hodgdon H414 | <<locked>> | 88% | 46,253 psi | 72% | 3209 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 88% | 49,821 psi | 78% | 3241 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 50,357 psi | 79% | 3248 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 32,097 psi | 50% | 2838 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 46,905 psi | 74% | 3215 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 88% | 46,209 psi | 72% | 3232 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,527 psi | 42% | 1906 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,080 psi | 75% | 3186 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 50,299 psi | 79% | 3235 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,251 psi | 69% | 3094 fps | 98.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,804 psi | 73% | 3120 fps | 95.8% |
| IMR 4350 | <<locked>> | 90% | 46,354 psi | 73% | 3146 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,527 psi | 70% | 3094 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 36,405 psi | 57% | 2956 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 46,514 psi | 73% | 3192 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 51,967 psi | 81% | 3241 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,647 psi | 78% | 3209 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,052 psi | 77% | 3156 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 44,251 psi | 69% | 3094 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 41,350 psi | 65% | 3025 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 44,976 psi | 70% | 3123 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,298 psi | 76% | 3169 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,182 psi | 77% | 3182 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,672 psi | 70% | 3140 fps | 98.9% |
| Norma 204 | <<locked>> | 94% | 53,403 psi | 84% | 3327 fps | 95.5% |
| Norma MRP | <<locked>> | 96% | 44,686 psi | 70% | 3241 fps | 95% |
| Norma URP | <<locked>> | 84% | 37,826 psi | 59% | 3012 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 44,701 psi | 70% | 3153 fps | 98.8% |
| Ramshot Hunter | 48.2 gr | 88% | 42,279 psi | 66% | 3123 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 52,069 psi | 82% | 3251 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,040 psi | 82% | 3271 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,948 psi | 42% | 1952 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,163 psi | 68% | 3068 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,747 psi | 76% | 3287 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,131 psi | 61% | 3117 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 37,666 psi | 59% | 3025 fps | 95.6% |
| ReloadSwiss RS 70 | 48.6 gr | 86% | 39,900 psi | 63% | 3107 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 52,141 psi | 82% | 3215 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,905 psi | 72% | 3110 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 39,508 psi | 62% | 3012 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 98% | 50,328 psi | 79% | 3287 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 88% | 48,791 psi | 76% | 3182 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 41,350 psi | 65% | 3025 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,647 psi | 78% | 3209 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,251 psi | 69% | 3094 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 44,976 psi | 70% | 3123 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,017 psi | 64% | 3077 fps | 98.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,676 psi | 79% | 3225 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,443 psi | 76% | 3196 fps | 99.4% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,705 psi | 78% | 3120 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,669 psi | 65% | 2959 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 43,787 psi | 69% | 3028 fps | 95.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 49,850 psi | 78% | 3281 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,139 psi | 77% | 3110 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,401 psi | 79% | 3215 fps | 99.6% |
| Somchem S355 | <<locked>> | 80% | 40,030 psi | 63% | 3018 fps | 98.4% |
| Somchem S365 | <<locked>> | 80% | 29,370 psi | 46% | 2808 fps | 96% |
| Somchem S385 | <<locked>> | 96% | 47,718 psi | 75% | 3199 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 50,212 psi | 79% | 3110 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,093 psi | 72% | 3094 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,528 psi | 73% | 3100 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,305 psi | 60% | 2946 fps | 99% |
| Vihtavuori N160 | <<locked>> | 82% | 36,738 psi | 58% | 2949 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 52,098 psi | 82% | 3235 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,991 psi | 71% | 3084 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,347 psi | 57% | 2946 fps | 95% |
| Vihtavuori N555 | <<locked>> | 88% | 33,504 psi | 53% | 2930 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,011 psi | 53% | 2854 fps | 97% |
| Winchester 748 | <<locked>> | 80% | 52,808 psi | 83% | 3294 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 46,572 psi | 73% | 3215 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 92% | 30,951 psi | 49% | 2933 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,240 psi | 76% | 3202 fps | 99.7% |
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 98 powders for .240 Weath. Mag. loaded with the .243 | 81gr | Peregrine Glider GRM. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,494 fps; across all powders the maximum-charge window runs from 2,129 fps to 3,494 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 81.0 gr projectile in 0.243" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, ReloadSwiss RS 70, Ramshot Hunter rank at the top here: for .240 Weath. Mag. with the .243 | 81gr | Peregrine Glider GRM 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.