Load Specifications
Load data in caliber .25-06 Rem. with .257 | 75gr | Hornady V-MAX bullet and 96 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 52 and Alliant Power Pro 2000-MR.
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>> | 86% | 58,160 psi | 89% | 3455 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,840 psi | 87% | 3474 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,580 psi | 88% | 3474 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,666 psi | 85% | 3484 fps | 100% |
| Accurate 4064 | <<locked>> | 92% | 57,479 psi | 88% | 3520 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 58,073 psi | 89% | 3589 fps | 98.8% |
| ADI AR 2206H | <<locked>> | 88% | 57,580 psi | 88% | 3553 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 94% | 58,856 psi | 90% | 3547 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,594 psi | 87% | 3501 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 86% | 57,377 psi | 88% | 3491 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 58,276 psi | 89% | 3635 fps | 99.7% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 58,175 psi | 89% | 3684 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 59,016 psi | 90% | 3573 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,421 psi | 88% | 3471 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 55,956 psi | 86% | 3537 fps | 99% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,114 psi | 84% | 3589 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 96% | 56,826 psi | 87% | 3638 fps | 99.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,639 psi | 61% | 3241 fps | 96.4% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 58,131 psi | 89% | 3560 fps | 98.9% |
| Bofors RP3 | <<locked>> | 92% | 56,202 psi | 86% | 3527 fps | 99.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 58,088 psi | 89% | 3488 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,362 psi | 86% | 3527 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 58,479 psi | 90% | 3645 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 82% | 56,884 psi | 87% | 3510 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 58,479 psi | 90% | 3530 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,348 psi | 88% | 3537 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 98% | 57,319 psi | 88% | 3579 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 88% | 58,218 psi | 89% | 3570 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 51,576 psi | 79% | 3448 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 58,233 psi | 89% | 3599 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 98% | 58,711 psi | 90% | 3615 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,056 psi | 54% | 2270 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,057 psi | 86% | 3510 fps | 99.5% |
| IMR 3031 | <<locked>> | 88% | 58,015 psi | 89% | 3563 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 58,305 psi | 89% | 3533 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 58,392 psi | 89% | 3501 fps | 96.4% |
| IMR 4198 | <<locked>> | 82% | 57,058 psi | 87% | 3432 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 96% | 58,305 psi | 89% | 3520 fps | 96.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,839 psi | 84% | 3510 fps | 98.4% |
| IMR 4895 | <<locked>> | 90% | 57,406 psi | 88% | 3576 fps | 99.5% |
| IMR 8208 XBR | <<locked>> | 86% | 56,594 psi | 87% | 3501 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 82% | 56,956 psi | 87% | 3484 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 57,885 psi | 89% | 3530 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,826 psi | 87% | 3471 fps | 99.4% |
| Lovex S062 | <<locked>> | 92% | 58,102 psi | 89% | 3527 fps | 99.9% |
| Lovex S065 | <<locked>> | 98% | 57,754 psi | 88% | 3510 fps | 97.6% |
| Lovex S070ᴾ | <<locked>> | 100% | 58,813 psi | 90% | 3543 fps | 96.8% |
| Norma 201 | <<locked>> | 88% | 56,217 psi | 86% | 3491 fps | 99.8% |
| Norma 202 | <<locked>> | 88% | 56,869 psi | 87% | 3501 fps | 100% |
| Norma 203B | <<locked>> | 92% | 58,711 psi | 90% | 3583 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 56,768 psi | 87% | 3570 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 90% | 56,173 psi | 86% | 3543 fps | 99.3% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 55,825 psi | 86% | 3556 fps | 97% |
| Ramshot TAC | <<locked>> | 86% | 57,464 psi | 88% | 3507 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 86% | 56,985 psi | 87% | 3533 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 84% | 57,754 psi | 88% | 3497 fps | 99.4% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,534 psi | 54% | 2323 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,825 psi | 86% | 3484 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 57,769 psi | 89% | 3514 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 56,463 psi | 87% | 3609 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 56,405 psi | 86% | 3648 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 58,175 psi | 89% | 3609 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 57,899 psi | 89% | 3642 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 56,956 psi | 87% | 3484 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 56,695 psi | 87% | 3491 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 94% | 56,043 psi | 86% | 3514 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 98% | 57,754 psi | 88% | 3510 fps | 97.6% |
| Shooters World Match Rifle | <<locked>> | 88% | 57,885 psi | 89% | 3530 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 58,102 psi | 89% | 3527 fps | 99.9% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 58,813 psi | 90% | 3543 fps | 96.8% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 58,305 psi | 89% | 3586 fps | 99.5% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 58,291 psi | 89% | 3497 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 55,753 psi | 85% | 3478 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,289 psi | 86% | 3514 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,798 psi | 89% | 3438 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 58,088 psi | 89% | 3422 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 58,363 psi | 89% | 3451 fps | 96.4% |
| Somchem S321 | <<locked>> | 84% | 58,291 psi | 89% | 3537 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,043 psi | 87% | 3425 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,100 psi | 84% | 3468 fps | 99.1% |
| Somchem S355 | <<locked>> | 94% | 56,202 psi | 86% | 3514 fps | 99.6% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,082 psi | 78% | 3507 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 84% | 57,145 psi | 88% | 3402 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,928 psi | 89% | 3422 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,507 psi | 87% | 3465 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 57,508 psi | 88% | 3471 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 57,914 psi | 89% | 3491 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,709 psi | 85% | 3507 fps | 98.3% |
| Vihtavuori N530 | <<locked>> | 86% | 57,159 psi | 88% | 3501 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 90% | 55,970 psi | 86% | 3461 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 58,798 psi | 90% | 3573 fps | 98.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,352 psi | 66% | 3337 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 56,695 psi | 87% | 3484 fps | 99.8% |
| Winchester 748 | <<locked>> | 86% | 57,363 psi | 88% | 3553 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 57,319 psi | 88% | 3579 fps | 96.3% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,391 psi | 86% | 3520 fps | 99.6% |
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% | 48,066 psi | 74% | 3287 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,069 psi | 81% | 3412 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,930 psi | 63% | 3176 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,167 psi | 74% | 3353 fps | 99.8% |
| Accurate 4064 | <<locked>> | 80% | 38,609 psi | 59% | 3150 fps | 99.2% |
| Accurate 4350 | <<locked>> | 92% | 43,497 psi | 67% | 3307 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 44,411 psi | 68% | 3287 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 82% | 40,292 psi | 62% | 3166 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,470 psi | 71% | 3310 fps | 98.7% |
| Alliant AR-Comp | <<locked>> | 80% | 46,601 psi | 71% | 3320 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 54,317 psi | 83% | 3566 fps | 99.3% |
| Alliant Power Pro 2000-MR | 50.4 gr | 82% | 43,700 psi | 67% | 3376 fps | 96.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,434 psi | 57% | 3123 fps | 96.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,867 psi | 83% | 3412 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,147 psi | 62% | 3199 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 92% | 42,540 psi | 65% | 3314 fps | 95.5% |
| Alliant Reloder-17 | <<locked>> | 84% | 37,333 psi | 57% | 3199 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 37,246 psi | 57% | 3179 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,903 psi | 67% | 3281 fps | 96% |
| Bofors RP3 | <<locked>> | 80% | 37,072 psi | 57% | 3120 fps | 96.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,167 psi | 74% | 3307 fps | 99.3% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,643 psi | 70% | 3320 fps | 99% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,531 psi | 77% | 3497 fps | 98.1% |
| Hodgdon H322 | <<locked>> | 80% | 53,345 psi | 82% | 3448 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 54,694 psi | 84% | 3468 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 43,642 psi | 67% | 3261 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 96% | 53,432 psi | 82% | 3510 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 44,802 psi | 69% | 3304 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 36,869 psi | 56% | 3117 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,060 psi | 63% | 3258 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 96% | 54,694 psi | 84% | 3540 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 40% | 2041 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,120 psi | 66% | 3251 fps | 97.4% |
| IMR 3031 | <<locked>> | 80% | 44,411 psi | 68% | 3320 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,639 psi | 61% | 3146 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 88% | 54,650 psi | 84% | 3432 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 53,824 psi | 82% | 3379 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 54,563 psi | 84% | 3451 fps | 95.5% |
| IMR 4831 | <<locked>> | 92% | 41,756 psi | 64% | 3245 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 41,089 psi | 63% | 3238 fps | 96.3% |
| IMR 8208 XBR | <<locked>> | 80% | 46,470 psi | 71% | 3310 fps | 98.7% |
| Lovex D073.5 | <<locked>> | 80% | 53,171 psi | 81% | 3419 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 43,671 psi | 67% | 3268 fps | 99.3% |
| Lovex S060 | <<locked>> | 80% | 44,469 psi | 68% | 3225 fps | 97.3% |
| Lovex S062 | <<locked>> | 80% | 39,595 psi | 61% | 3153 fps | 97.3% |
| Lovex S065 | <<locked>> | 92% | 47,761 psi | 73% | 3320 fps | 95.4% |
| Lovex S070 | <<locked>> | 96% | 51,634 psi | 79% | 3412 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 43,497 psi | 67% | 3238 fps | 98.2% |
| Norma 202 | <<locked>> | 80% | 43,903 psi | 67% | 3258 fps | 99.7% |
| Norma 203B | <<locked>> | 80% | 39,537 psi | 61% | 3186 fps | 95.8% |
| Norma URP | <<locked>> | 92% | 43,453 psi | 67% | 3307 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 39,233 psi | 60% | 3186 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 96% | 48,675 psi | 75% | 3415 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 46,717 psi | 72% | 3297 fps | 95.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,325 psi | 71% | 3327 fps | 97.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,444 psi | 77% | 3363 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,266 psi | 40% | 2087 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,185 psi | 80% | 3419 fps | 99.9% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 50,517 psi | 77% | 3376 fps | 95.3% |
| ReloadSwiss RS 52 | 47.6 gr | 80% | 42,206 psi | 65% | 3317 fps | 95.9% |
| ReloadSwiss RS 60 | 48.4 gr | 80% | 34,592 psi | 53% | 3136 fps | 96.9% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 43,555 psi | 67% | 3320 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 46,688 psi | 72% | 3409 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 47,311 psi | 72% | 3310 fps | 99.8% |
| Rottweil R 902 | <<locked>> | 80% | 41,437 psi | 63% | 3182 fps | 97.7% |
| Rottweil R 903 | <<locked>> | 82% | 37,391 psi | 57% | 3123 fps | 95.9% |
| Shooters World Long Rifle | <<locked>> | 92% | 47,761 psi | 73% | 3320 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,671 psi | 67% | 3268 fps | 99.3% |
| Shooters World Precision | <<locked>> | 80% | 39,595 psi | 61% | 3153 fps | 97.3% |
| Shooters World SW4350 | <<locked>> | 96% | 51,634 psi | 79% | 3412 fps | 95.2% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 38,450 psi | 59% | 3173 fps | 95.3% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 54,650 psi | 84% | 3438 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,121 psi | 69% | 3268 fps | 95.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,033 psi | 66% | 3245 fps | 96.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,701 psi | 68% | 3205 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,202 psi | 57% | 3031 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 54,708 psi | 84% | 3389 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 50,676 psi | 78% | 3402 fps | 99.5% |
| Somchem S335 | <<locked>> | 80% | 44,440 psi | 68% | 3199 fps | 99.9% |
| Somchem S341 | <<locked>> | 80% | 44,672 psi | 68% | 3264 fps | 97.3% |
| Somchem S355 | <<locked>> | 82% | 38,000 psi | 58% | 3130 fps | 95.9% |
| Somchem S365 | <<locked>> | 88% | 33,924 psi | 52% | 3100 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 50,459 psi | 77% | 3297 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,962 psi | 69% | 3205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,640 psi | 62% | 3176 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,423 psi | 63% | 3173 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 33,910 psi | 52% | 2989 fps | 96% |
| Vihtavuori N160 | <<locked>> | 90% | 42,424 psi | 65% | 3241 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 46,630 psi | 71% | 3304 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 80% | 40,103 psi | 61% | 3153 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 92% | 44,904 psi | 69% | 3307 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 98% | 40,524 psi | 62% | 3271 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 37,217 psi | 57% | 3074 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 46,543 psi | 71% | 3353 fps | 99.3% |
| Winchester 760 | <<locked>> | 96% | 53,432 psi | 82% | 3510 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,612 psi | 65% | 3248 fps | 97.4% |
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 96 powders for .25-06 Rem. loaded with the .257 | 75gr | Hornady V-MAX. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,684 fps; across all powders the maximum-charge window runs from 2,270 fps to 3,684 fps. Accurate 4350 gives the best case fill at 100 %, and 96 of the 96 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 75.0 gr projectile in 0.257" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, ReloadSwiss RS 52, Alliant Power Pro 2000-MR rank at the top here: for .25-06 Rem. with the .257 | 75gr | Hornady V-MAX 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.