Load Specifications
Load data in caliber .25-06 Rem. with .257 | 80gr | Peregrine VLR-4 bullet and 99 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, 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.
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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% | 58,465 psi | 90% | 3373 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 57,145 psi | 88% | 3396 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 57,363 psi | 88% | 3386 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 55,840 psi | 86% | 3406 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 57,058 psi | 87% | 3373 fps | 95.8% |
| Accurate 4064 | <<locked>> | 92% | 57,406 psi | 88% | 3435 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 58,668 psi | 90% | 3524 fps | 99.2% |
| ADI AR 2206H | <<locked>> | 88% | 58,189 psi | 89% | 3481 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 92% | 55,709 psi | 85% | 3415 fps | 99.2% |
| ADI Benchmark 8208 | <<locked>> | 86% | 56,811 psi | 87% | 3422 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 57,682 psi | 88% | 3409 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 58,900 psi | 90% | 3563 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 58,900 psi | 90% | 3612 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 55,753 psi | 85% | 3438 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,638 psi | 88% | 3383 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 56,246 psi | 86% | 3461 fps | 99.3% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 55,738 psi | 85% | 3524 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 57,624 psi | 88% | 3573 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 39,856 psi | 61% | 3186 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 45,281 psi | 69% | 3369 fps | 96.6% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 58,653 psi | 90% | 3491 fps | 99.3% |
| Bofors RP3 | <<locked>> | 92% | 56,463 psi | 87% | 3451 fps | 99.9% |
| Bofors RP7 | <<locked>> | 96% | 56,594 psi | 87% | 3409 fps | 96% |
| Hodgdon Benchmark | <<locked>> | 86% | 58,595 psi | 90% | 3412 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 56,710 psi | 87% | 3448 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 59,045 psi | 90% | 3570 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 82% | 57,421 psi | 88% | 3428 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 57,696 psi | 88% | 3465 fps | 98.7% |
| Hodgdon H414 | <<locked>> | 98% | 57,754 psi | 88% | 3514 fps | 97% |
| Hodgdon H4895 | <<locked>> | 88% | 58,784 psi | 90% | 3494 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 52,170 psi | 80% | 3379 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 58,842 psi | 90% | 3524 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,128 psi | 54% | 2205 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,405 psi | 86% | 3435 fps | 99.8% |
| IMR 3031 | <<locked>> | 88% | 58,711 psi | 90% | 3484 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 58,682 psi | 90% | 3458 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 90% | 58,769 psi | 90% | 3428 fps | 97% |
| IMR 4198 | <<locked>> | 82% | 57,406 psi | 88% | 3346 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 57,377 psi | 88% | 3435 fps | 96.3% |
| IMR 4451 Enduron | <<locked>> | 96% | 58,856 psi | 90% | 3455 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 55,100 psi | 84% | 3438 fps | 98.8% |
| IMR 4895 | <<locked>> | 90% | 57,711 psi | 88% | 3501 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 86% | 56,811 psi | 87% | 3422 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 57,348 psi | 88% | 3409 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 58,117 psi | 89% | 3451 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 57,348 psi | 88% | 3399 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 58,305 psi | 89% | 3451 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 58,189 psi | 89% | 3442 fps | 98.2% |
| Lovex S070 | <<locked>> | 98% | 55,651 psi | 85% | 3415 fps | 96.7% |
| Norma 201 | <<locked>> | 88% | 56,521 psi | 87% | 3415 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 57,392 psi | 88% | 3425 fps | 100% |
| Norma 203B | <<locked>> | 90% | 55,434 psi | 85% | 3445 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 57,479 psi | 88% | 3507 fps | 99% |
| Ramshot Big Game | <<locked>> | 90% | 56,797 psi | 87% | 3474 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 56,695 psi | 87% | 3497 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 57,870 psi | 89% | 3438 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 57,392 psi | 88% | 3461 fps | 99.6% |
| Ramshot X-Terminator | <<locked>> | 84% | 58,030 psi | 89% | 3422 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,331 psi | 54% | 2251 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 56,333 psi | 86% | 3409 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 58,233 psi | 89% | 3445 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 57,014 psi | 87% | 3537 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 57,159 psi | 88% | 3576 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3543 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 58,450 psi | 90% | 3576 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 56,985 psi | 87% | 3402 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 57,087 psi | 87% | 3415 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 56,304 psi | 86% | 3442 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 96% | 56,594 psi | 87% | 3409 fps | 96% |
| Shooters World Long Rifle | <<locked>> | 98% | 58,189 psi | 89% | 3442 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 58,117 psi | 89% | 3451 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 58,305 psi | 89% | 3451 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 55,651 psi | 85% | 3415 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 58,624 psi | 90% | 3510 fps | 99.7% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 58,755 psi | 90% | 3415 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 56,028 psi | 86% | 3406 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 56,710 psi | 87% | 3442 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 58,204 psi | 89% | 3363 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 58,769 psi | 90% | 3350 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 58,813 psi | 90% | 3389 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 58,552 psi | 90% | 3458 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 57,479 psi | 88% | 3350 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 55,854 psi | 86% | 3402 fps | 99.5% |
| Somchem S355 | <<locked>> | 94% | 56,507 psi | 87% | 3438 fps | 99.8% |
| Somchem S365ᴾ | <<locked>> | 100% | 51,750 psi | 79% | 3442 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 57,450 psi | 88% | 3320 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 58,450 psi | 90% | 3346 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 56,666 psi | 87% | 3379 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 58,160 psi | 89% | 3396 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 58,407 psi | 89% | 3419 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 56,391 psi | 86% | 3442 fps | 98.8% |
| Vihtavuori N530 | <<locked>> | 86% | 57,740 psi | 88% | 3432 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 56,260 psi | 86% | 3383 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,506 psi | 85% | 3442 fps | 98.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 43,758 psi | 67% | 3274 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 57,217 psi | 88% | 3415 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 57,798 psi | 89% | 3474 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 58,117 psi | 89% | 3517 fps | 97.1% |
| Winchester StaBALL Match | <<locked>> | 88% | 56,840 psi | 87% | 3448 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% | 48,037 psi | 74% | 3205 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 53,258 psi | 82% | 3333 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,495 psi | 62% | 3091 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 48,341 psi | 74% | 3278 fps | 99.9% |
| Accurate 2700 | <<locked>> | 88% | 53,534 psi | 82% | 3307 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 38,276 psi | 59% | 3071 fps | 99.4% |
| Accurate 4350 | <<locked>> | 90% | 40,582 psi | 62% | 3166 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 44,556 psi | 68% | 3219 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,855 psi | 58% | 3035 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,688 psi | 72% | 3235 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 46,862 psi | 72% | 3238 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 54,752 psi | 84% | 3488 fps | 99.6% |
| Alliant Power Pro 2000-MR | 48.5 gr | 80% | 40,857 psi | 63% | 3232 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,449 psi | 57% | 3054 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 54,317 psi | 83% | 3333 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 40,205 psi | 62% | 3127 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 40,263 psi | 62% | 3189 fps | 95.4% |
| Alliant Reloder-17 | 48.9 gr | 82% | 34,737 psi | 53% | 3058 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 34,751 psi | 53% | 3041 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 98% | 42,047 psi | 64% | 3287 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 44,251 psi | 68% | 3212 fps | 96.7% |
| Bofors RP3 | <<locked>> | 80% | 36,985 psi | 57% | 3048 fps | 96.7% |
| Bofors RP7 | <<locked>> | 94% | 53,069 psi | 81% | 3346 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 48,370 psi | 74% | 3232 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,919 psi | 70% | 3251 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 50,894 psi | 78% | 3422 fps | 98.6% |
| Hodgdon H322 | <<locked>> | 80% | 53,751 psi | 82% | 3373 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 43,627 psi | 67% | 3189 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 50,328 psi | 77% | 3373 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 44,962 psi | 69% | 3235 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 34,418 psi | 53% | 2989 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,394 psi | 63% | 3189 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,889 psi | 40% | 1975 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,352 psi | 66% | 3179 fps | 98% |
| IMR 3031 | <<locked>> | 80% | 44,672 psi | 68% | 3241 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,726 psi | 61% | 3081 fps | 96% |
| IMR 4166 Enduron | <<locked>> | 86% | 51,590 psi | 79% | 3301 fps | 95.4% |
| IMR 4198 | <<locked>> | 80% | 54,070 psi | 83% | 3294 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 53,824 psi | 82% | 3369 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 51,634 psi | 79% | 3320 fps | 95.4% |
| IMR 4831 | <<locked>> | 90% | 39,160 psi | 60% | 3114 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 41,234 psi | 63% | 3169 fps | 97% |
| IMR 8208 XBR | <<locked>> | 80% | 46,688 psi | 72% | 3235 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 53,127 psi | 81% | 3340 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,772 psi | 67% | 3192 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 44,614 psi | 68% | 3156 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 39,552 psi | 61% | 3084 fps | 97.8% |
| Lovex S065 | <<locked>> | 90% | 44,875 psi | 69% | 3186 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 48,675 psi | 75% | 3281 fps | 95% |
| Norma 201 | <<locked>> | 80% | 43,381 psi | 66% | 3163 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 44,005 psi | 67% | 3182 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 39,581 psi | 61% | 3114 fps | 96.5% |
| Norma URP | <<locked>> | 90% | 40,828 psi | 63% | 3173 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 39,552 psi | 61% | 3127 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 94% | 45,774 psi | 70% | 3284 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 47,021 psi | 72% | 3232 fps | 96% |
| Ramshot Wild Boar | <<locked>> | 80% | 46,398 psi | 71% | 3255 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 50,763 psi | 78% | 3294 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,150 psi | 40% | 2021 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 52,504 psi | 80% | 3346 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 47,326 psi | 73% | 3241 fps | 95.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 42,583 psi | 65% | 3251 fps | 96.6% |
| ReloadSwiss RS 60 | 47.8 gr | 80% | 34,679 psi | 53% | 3077 fps | 97.7% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 40,785 psi | 62% | 3189 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 43,859 psi | 67% | 3274 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 47,311 psi | 72% | 3232 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,307 psi | 63% | 3107 fps | 98.2% |
| Rottweil R 903 | <<locked>> | 80% | 34,650 psi | 53% | 2979 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 94% | 53,069 psi | 81% | 3346 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 44,875 psi | 69% | 3186 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,772 psi | 67% | 3192 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 39,552 psi | 61% | 3084 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 94% | 48,675 psi | 75% | 3281 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,984 psi | 55% | 3038 fps | 95% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 55,332 psi | 85% | 3363 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 45,078 psi | 69% | 3196 fps | 96.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 43,265 psi | 66% | 3176 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,976 psi | 69% | 3133 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,391 psi | 57% | 2963 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 51,227 psi | 78% | 3255 fps | 95.4% |
| Somchem S321 | <<locked>> | 80% | 51,024 psi | 78% | 3330 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 44,425 psi | 68% | 3123 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 45,034 psi | 69% | 3199 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 35,520 psi | 54% | 2992 fps | 95.6% |
| Somchem S365 | <<locked>> | 86% | 31,647 psi | 48% | 2963 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 50,850 psi | 78% | 3219 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,397 psi | 70% | 3133 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,886 psi | 63% | 3104 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,553 psi | 64% | 3100 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 33,823 psi | 52% | 2920 fps | 96.6% |
| Vihtavuori N160 | <<locked>> | 90% | 42,670 psi | 65% | 3176 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 80% | 46,862 psi | 72% | 3232 fps | 99.2% |
| Vihtavuori N540 | <<locked>> | 80% | 40,190 psi | 62% | 3077 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 90% | 42,003 psi | 64% | 3169 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 38,014 psi | 58% | 3140 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 34,780 psi | 53% | 2949 fps | 95.6% |
| Winchester 748 | <<locked>> | 80% | 46,934 psi | 72% | 3287 fps | 99.6% |
| Winchester 760 | <<locked>> | 94% | 50,328 psi | 77% | 3373 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,844 psi | 66% | 3179 fps | 98% |
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 112 powders for .25-06 Rem. loaded with the .257 | 80gr | Peregrine VLR-4. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,612 fps; across all powders the maximum-charge window runs from 2,205 fps to 3,612 fps. Accurate 3100 gives the best case fill at 100 %, and 112 of the 112 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 80.0 gr projectile in 0.257" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .25-06 Rem. with the .257 | 80gr | Peregrine VLR-4 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.