Load Specifications
Load data in caliber .240 Weath. Mag. with .243 | 82gr | Peregrine VLR-4 bullet and 97 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 Hodgdon Superformance.
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% | 57,508 psi | 90% | 3232 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,000 psi | 89% | 3251 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 55,564 psi | 87% | 3255 fps | 97.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 48,834 psi | 77% | 3202 fps | 97.5% |
| Accurate 4064 | <<locked>> | 88% | 57,217 psi | 90% | 3307 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 54,621 psi | 86% | 3350 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 56,971 psi | 89% | 3346 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 54,926 psi | 86% | 3291 fps | 99.8% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,434 psi | 88% | 3392 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 82% | 55,521 psi | 87% | 3287 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 57,101 psi | 89% | 3261 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 57,682 psi | 90% | 3484 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,391 psi | 88% | 3386 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,347 psi | 87% | 3314 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 55,666 psi | 87% | 3340 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 55,550 psi | 87% | 3419 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,217 psi | 90% | 3455 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,492 psi | 87% | 3373 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 45,861 psi | 72% | 3232 fps | 99.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,156 psi | 83% | 3445 fps | 99.5% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,348 psi | 90% | 3363 fps | 99.8% |
| Bofors RP3 | <<locked>> | 88% | 55,898 psi | 88% | 3327 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 55,579 psi | 87% | 3297 fps | 97.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,087 psi | 89% | 3271 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 55,709 psi | 87% | 3317 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 56,579 psi | 89% | 3343 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 57,421 psi | 90% | 3409 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 92% | 57,406 psi | 90% | 3369 fps | 97.1% |
| Hodgdon H4895 | <<locked>> | 84% | 57,595 psi | 90% | 3360 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 55,796 psi | 87% | 3333 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 54,215 psi | 85% | 3333 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 53,954 psi | 85% | 3373 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,911 psi | 56% | 2119 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,390 psi | 87% | 3304 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 54,389 psi | 85% | 3284 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 54,041 psi | 85% | 3271 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,159 psi | 90% | 3307 fps | 98.1% |
| IMR 4350 | <<locked>> | 96% | 56,782 psi | 89% | 3333 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 92% | 57,740 psi | 90% | 3340 fps | 98.2% |
| IMR 4831 | <<locked>> | 96% | 55,129 psi | 86% | 3337 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 57,116 psi | 90% | 3373 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 55,521 psi | 87% | 3287 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,464 psi | 90% | 3317 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,956 psi | 88% | 3264 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 53,998 psi | 85% | 3264 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,217 psi | 90% | 3327 fps | 99.1% |
| Lovex S070 | <<locked>> | 94% | 55,143 psi | 86% | 3310 fps | 98% |
| Norma 201 | <<locked>> | 84% | 55,332 psi | 87% | 3278 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,347 psi | 88% | 3284 fps | 100% |
| Norma 203B | <<locked>> | 86% | 54,926 psi | 86% | 3323 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 52,069 psi | 82% | 3386 fps | 97.3% |
| Norma URP | <<locked>> | 96% | 57,261 psi | 90% | 3396 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 86% | 55,709 psi | 87% | 3346 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 96% | 56,217 psi | 88% | 3389 fps | 98.8% |
| Ramshot TAC | <<locked>> | 82% | 55,912 psi | 88% | 3304 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 82% | 55,956 psi | 88% | 3327 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,303 psi | 57% | 2165 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 56,884 psi | 89% | 3323 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,652 psi | 89% | 3419 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 56,724 psi | 89% | 3451 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 54,824 psi | 86% | 3369 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 53,519 psi | 84% | 3396 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 82% | 56,101 psi | 88% | 3264 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,985 psi | 88% | 3281 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,086 psi | 88% | 3323 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 3353 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 92% | 55,579 psi | 87% | 3297 fps | 97.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,217 psi | 90% | 3327 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,464 psi | 90% | 3317 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 53,998 psi | 85% | 3264 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,143 psi | 86% | 3310 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 54,128 psi | 85% | 3327 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 54,607 psi | 86% | 3281 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 55,709 psi | 87% | 3310 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 56,666 psi | 89% | 3219 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,595 psi | 90% | 3212 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,450 psi | 90% | 3274 fps | 98.2% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,041 psi | 85% | 3346 fps | 96.2% |
| Somchem S335 | <<locked>> | 84% | 56,043 psi | 88% | 3209 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 54,259 psi | 85% | 3268 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 55,840 psi | 88% | 3317 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,130 psi | 88% | 3396 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,347 psi | 87% | 3330 fps | 97.4% |
| Vihtavuori N133 | <<locked>> | 84% | 57,116 psi | 90% | 3202 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 56,318 psi | 88% | 3245 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,116 psi | 90% | 3261 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 57,638 psi | 90% | 3294 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,941 psi | 88% | 3333 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 82% | 56,115 psi | 88% | 3287 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,405 psi | 87% | 3255 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,100 psi | 86% | 3337 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,126 psi | 80% | 3320 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,188 psi | 88% | 3301 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,942 psi | 89% | 3343 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 53,911 psi | 84% | 3346 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,336 psi | 65% | 3255 fps | 99.8% |
| Winchester StaBALL Match | <<locked>> | 84% | 55,637 psi | 87% | 3317 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% | 53,679 psi | 84% | 3173 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,572 psi | 73% | 3084 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 48,544 psi | 76% | 3123 fps | 95.6% |
| Accurate 3100 | <<locked>> | 96% | 42,337 psi | 66% | 3071 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 44,063 psi | 69% | 3081 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 35,288 psi | 55% | 2930 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 50,096 psi | 79% | 3222 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 80% | 42,308 psi | 66% | 3041 fps | 98% |
| ADI AR 2209 | <<locked>> | 98% | 52,591 psi | 82% | 3317 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,214 psi | 82% | 3232 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 53,432 psi | 84% | 3209 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,296 psi | 73% | 3264 fps | 98.8% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 52,562 psi | 82% | 3314 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,496 psi | 67% | 3068 fps | 99.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,585 psi | 71% | 3146 fps | 98.8% |
| Alliant Reloder-16 | 42.3 gr | 82% | 35,070 psi | 55% | 2953 fps | 95.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,231 psi | 58% | 3035 fps | 97.9% |
| Alliant Reloder-19 | <<locked>> | 98% | 51,793 psi | 81% | 3304 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 88% | 30,777 psi | 48% | 2835 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 36,260 psi | 57% | 3051 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 49,850 psi | 78% | 3225 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 42,337 psi | 66% | 3071 fps | 99.2% |
| Bofors RP7 | <<locked>> | 86% | 45,818 psi | 72% | 3107 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,432 psi | 84% | 3212 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 51,735 psi | 81% | 3251 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,120 psi | 68% | 3077 fps | 97.2% |
| Hodgdon H414 | <<locked>> | 86% | 43,424 psi | 68% | 3130 fps | 95% |
| Hodgdon H4350 | <<locked>> | 88% | 50,140 psi | 79% | 3232 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 50,618 psi | 79% | 3235 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,211 psi | 47% | 2766 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,210 psi | 74% | 3205 fps | 99.8% |
| Hodgdon Superformance | 51.7 gr | 88% | 46,586 psi | 73% | 3225 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,643 psi | 42% | 1896 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,312 psi | 76% | 3176 fps | 99.7% |
| IMR 3031 | <<locked>> | 80% | 50,937 psi | 80% | 3228 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,469 psi | 70% | 3084 fps | 98.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,065 psi | 74% | 3110 fps | 96% |
| IMR 4350 | <<locked>> | 90% | 46,644 psi | 73% | 3140 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 44,773 psi | 70% | 3084 fps | 95.3% |
| IMR 4831 | <<locked>> | 84% | 36,666 psi | 57% | 2949 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 46,775 psi | 73% | 3182 fps | 99.3% |
| IMR 8208 XBR | <<locked>> | 80% | 52,214 psi | 82% | 3232 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,937 psi | 78% | 3192 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,298 psi | 77% | 3143 fps | 99.6% |
| Lovex S062 | <<locked>> | 80% | 44,483 psi | 70% | 3084 fps | 99.6% |
| Lovex S065 | <<locked>> | 82% | 39,044 psi | 61% | 2956 fps | 95.1% |
| Lovex S070 | <<locked>> | 88% | 45,266 psi | 71% | 3114 fps | 95.8% |
| Norma 201 | <<locked>> | 80% | 48,863 psi | 77% | 3166 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 49,429 psi | 77% | 3169 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,976 psi | 70% | 3130 fps | 99% |
| Norma MRP | <<locked>> | 96% | 45,078 psi | 71% | 3238 fps | 95.3% |
| Norma URP | <<locked>> | 82% | 35,665 psi | 56% | 2940 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 44,991 psi | 71% | 3146 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 88% | 42,598 psi | 67% | 3117 fps | 95.8% |
| Ramshot TAC | <<locked>> | 80% | 52,359 psi | 82% | 3238 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,344 psi | 82% | 3261 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,064 psi | 42% | 1946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 43,439 psi | 68% | 3061 fps | 95.7% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,095 psi | 77% | 3278 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,653 psi | 62% | 3114 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 38,000 psi | 60% | 3022 fps | 95.8% |
| ReloadSwiss RS 70 | 48.5 gr | 86% | 40,190 psi | 63% | 3100 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,736 psi | 83% | 3209 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,456 psi | 73% | 3107 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 80% | 39,755 psi | 62% | 3002 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 98% | 50,734 psi | 80% | 3281 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 86% | 45,818 psi | 72% | 3107 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 82% | 39,044 psi | 61% | 2956 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,937 psi | 78% | 3192 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,483 psi | 70% | 3084 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 45,266 psi | 71% | 3114 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,278 psi | 65% | 3068 fps | 98.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 50,981 psi | 80% | 3212 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,718 psi | 76% | 3186 fps | 99.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,908 psi | 78% | 3107 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,872 psi | 66% | 2946 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 44,034 psi | 69% | 3022 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 50,270 psi | 79% | 3274 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 49,661 psi | 78% | 3104 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,705 psi | 79% | 3202 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 40,524 psi | 64% | 3015 fps | 98.6% |
| Somchem S365 | <<locked>> | 80% | 29,776 psi | 47% | 2808 fps | 96.4% |
| Somchem S385 | <<locked>> | 96% | 48,095 psi | 75% | 3192 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 50,430 psi | 79% | 3097 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,369 psi | 73% | 3081 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,789 psi | 73% | 3091 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,537 psi | 60% | 2936 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 82% | 36,985 psi | 58% | 2943 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 52,359 psi | 82% | 3225 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,281 psi | 71% | 3074 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 36,622 psi | 57% | 2940 fps | 95.3% |
| Vihtavuori N555 | <<locked>> | 88% | 33,794 psi | 53% | 2927 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,229 psi | 54% | 2848 fps | 97.2% |
| Winchester 748 | <<locked>> | 80% | 53,127 psi | 83% | 3281 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,714 psi | 69% | 3136 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 92% | 31,169 psi | 49% | 2930 fps | 96.1% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,530 psi | 76% | 3189 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 97 powders for .240 Weath. Mag. loaded with the .243 | 82gr | Peregrine VLR-4. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,484 fps; across all powders the maximum-charge window runs from 2,119 fps to 3,484 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 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 82.0 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, Hodgdon Superformance rank at the top here: for .240 Weath. Mag. with the .243 | 82gr | Peregrine VLR-4 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.