Load Specifications
Load data in caliber .25-06 Rem. with .257 | 87gr | Frontier PH HPFB bullet and 95 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and ReloadSwiss RS 60.
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>> | 82% | 56,420 psi | 86% | 3225 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,246 psi | 86% | 3248 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 57,493 psi | 88% | 3317 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 58,291 psi | 89% | 3294 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,543 psi | 73% | 3173 fps | 96.7% |
| Accurate 4064 | <<locked>> | 88% | 56,333 psi | 86% | 3297 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 57,130 psi | 88% | 3386 fps | 99.5% |
| ADI AR 2206H | <<locked>> | 84% | 55,825 psi | 86% | 3327 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 56,942 psi | 87% | 3327 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 58,146 psi | 89% | 3330 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,782 psi | 85% | 3255 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 56,231 psi | 86% | 3458 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,508 psi | 88% | 3353 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,957 psi | 89% | 3376 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,740 psi | 88% | 3451 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 92% | 55,564 psi | 85% | 3425 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,831 psi | 69% | 3202 fps | 99.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 51,169 psi | 78% | 3399 fps | 98.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 56,014 psi | 86% | 3337 fps | 99.5% |
| Bofors RP3 | <<locked>> | 90% | 58,595 psi | 90% | 3373 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 58,291 psi | 89% | 3337 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,854 psi | 86% | 3255 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 58,146 psi | 89% | 3360 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,492 psi | 85% | 3323 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 55,970 psi | 86% | 3376 fps | 97.5% |
| Hodgdon H4350 | <<locked>> | 92% | 55,956 psi | 86% | 3337 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 56,405 psi | 86% | 3340 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,914 psi | 89% | 3363 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 56,362 psi | 86% | 3369 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,869 psi | 87% | 3412 fps | 97.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,592 psi | 55% | 2133 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 57,682 psi | 88% | 3343 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 56,420 psi | 86% | 3323 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 56,391 psi | 86% | 3310 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 55,941 psi | 86% | 3278 fps | 97.4% |
| IMR 4350 | <<locked>> | 96% | 55,288 psi | 85% | 3297 fps | 96.8% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,463 psi | 87% | 3310 fps | 97.4% |
| IMR 4831 | <<locked>> | 98% | 57,566 psi | 88% | 3376 fps | 99.6% |
| IMR 4895 | <<locked>> | 86% | 55,579 psi | 85% | 3350 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 58,146 psi | 89% | 3330 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,202 psi | 86% | 3304 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 58,334 psi | 89% | 3307 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 56,405 psi | 86% | 3304 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 56,217 psi | 86% | 3304 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 57,348 psi | 88% | 3340 fps | 97.9% |
| Norma 201 | <<locked>> | 86% | 58,146 psi | 89% | 3327 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,624 psi | 90% | 3327 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,130 psi | 88% | 3363 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 50,430 psi | 77% | 3343 fps | 96.3% |
| Norma URP | <<locked>> | 96% | 55,724 psi | 85% | 3369 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 88% | 58,291 psi | 89% | 3386 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 58,552 psi | 90% | 3422 fps | 98.7% |
| Ramshot TAC | <<locked>> | 84% | 58,769 psi | 90% | 3350 fps | 99% |
| Ramshot Wild Boar | <<locked>> | 84% | 58,552 psi | 90% | 3369 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,914 psi | 90% | 3327 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,187 psi | 55% | 2182 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,477 psi | 85% | 3297 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 55,027 psi | 84% | 3392 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 55,100 psi | 84% | 3428 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 57,261 psi | 88% | 3409 fps | 99.4% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 56,043 psi | 86% | 3435 fps | 99.2% |
| Rottweil R 901 | <<locked>> | 84% | 58,769 psi | 90% | 3310 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,697 psi | 90% | 3327 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 58,363 psi | 89% | 3363 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 58,291 psi | 89% | 3337 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 56,217 psi | 86% | 3304 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,202 psi | 86% | 3304 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,405 psi | 86% | 3304 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 57,348 psi | 88% | 3340 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,420 psi | 86% | 3363 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,363 psi | 88% | 3323 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 58,160 psi | 89% | 3353 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 58,929 psi | 90% | 3258 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,231 psi | 86% | 3199 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 56,391 psi | 86% | 3248 fps | 97.5% |
| Somchem S335 | <<locked>> | 86% | 58,813 psi | 90% | 3255 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 57,072 psi | 87% | 3314 fps | 99.9% |
| Somchem S355 | <<locked>> | 92% | 58,262 psi | 89% | 3356 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 58,363 psi | 89% | 3432 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,650 psi | 82% | 3287 fps | 96.4% |
| Vihtavuori N130 | <<locked>> | 82% | 58,595 psi | 90% | 3219 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 55,695 psi | 85% | 3186 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,494 psi | 90% | 3284 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,753 psi | 85% | 3248 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 56,318 psi | 86% | 3274 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 58,175 psi | 89% | 3363 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 84% | 58,740 psi | 90% | 3333 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,769 psi | 89% | 3291 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,363 psi | 88% | 3366 fps | 99.4% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,850 psi | 76% | 3294 fps | 99.1% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,624 psi | 90% | 3333 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 55,274 psi | 85% | 3320 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 55,970 psi | 86% | 3376 fps | 97.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,364 psi | 62% | 3215 fps | 99.4% |
| Winchester StaBALL Match | <<locked>> | 86% | 58,117 psi | 89% | 3356 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% | 52,968 psi | 81% | 3173 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,977 psi | 70% | 3081 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 53,679 psi | 82% | 3255 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 51,053 psi | 78% | 3166 fps | 95.5% |
| Accurate 3100 | <<locked>> | 98% | 44,396 psi | 68% | 3107 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 43,468 psi | 67% | 3074 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 37,362 psi | 57% | 2986 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 49,110 psi | 75% | 3205 fps | 99.2% |
| ADI AR 2208 | <<locked>> | 80% | 41,539 psi | 64% | 3025 fps | 97.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,155 psi | 78% | 3215 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 80% | 52,214 psi | 80% | 3202 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,295 psi | 69% | 3238 fps | 98.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,582 psi | 64% | 3051 fps | 98.6% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,672 psi | 68% | 3127 fps | 98.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 36,695 psi | 56% | 2992 fps | 95.2% |
| Alliant Reloder-17 | 48.4 gr | 80% | 36,245 psi | 56% | 3009 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 32,271 psi | 49% | 2877 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 92% | 38,116 psi | 58% | 3094 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,776 psi | 75% | 3205 fps | 98.5% |
| Bofors RP3 | <<locked>> | 80% | 41,727 psi | 64% | 3061 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 48,153 psi | 74% | 3150 fps | 95% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,620 psi | 81% | 3199 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,821 psi | 78% | 3235 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,366 psi | 65% | 3061 fps | 96.4% |
| Hodgdon H414 | <<locked>> | 90% | 48,762 psi | 75% | 3241 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 90% | 52,344 psi | 80% | 3268 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 49,603 psi | 76% | 3219 fps | 99.6% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 31,763 psi | 49% | 2815 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 45,861 psi | 70% | 3179 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 90% | 48,878 psi | 75% | 3264 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 41% | 1919 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 47,355 psi | 73% | 3156 fps | 99.3% |
| IMR 3031 | <<locked>> | 80% | 49,487 psi | 76% | 3212 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 43,642 psi | 67% | 3068 fps | 98% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,093 psi | 71% | 3091 fps | 95% |
| IMR 4350 | <<locked>> | 92% | 48,631 psi | 75% | 3173 fps | 95.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 46,572 psi | 71% | 3120 fps | 95.1% |
| IMR 4831 | <<locked>> | 86% | 38,450 psi | 59% | 2995 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 45,818 psi | 70% | 3166 fps | 98.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,155 psi | 78% | 3215 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 48,907 psi | 75% | 3182 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,385 psi | 74% | 3130 fps | 99.2% |
| Lovex S062 | <<locked>> | 80% | 43,729 psi | 67% | 3071 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 40,901 psi | 63% | 2995 fps | 95% |
| Lovex S070 | <<locked>> | 90% | 47,427 psi | 73% | 3156 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 48,022 psi | 74% | 3150 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 48,356 psi | 74% | 3156 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,063 psi | 68% | 3114 fps | 98.5% |
| Norma MRP | <<locked>> | 98% | 46,978 psi | 72% | 3271 fps | 95.2% |
| Norma URP | <<locked>> | 84% | 37,362 psi | 57% | 2986 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,092 psi | 68% | 3123 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 90% | 44,527 psi | 68% | 3156 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 51,372 psi | 79% | 3219 fps | 97.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,024 psi | 78% | 3238 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 80% | 55,259 psi | 85% | 3268 fps | 99.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,050 psi | 41% | 1962 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,455 psi | 70% | 3100 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,761 psi | 73% | 3251 fps | 98.6% |
| ReloadSwiss RS 60 | 48.4 gr | 80% | 38,566 psi | 59% | 3087 fps | 99.5% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 39,900 psi | 61% | 3064 fps | 95.8% |
| ReloadSwiss RS 70 | 54.1 gr | 88% | 42,235 psi | 65% | 3143 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,025 psi | 80% | 3202 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,556 psi | 70% | 3094 fps | 99.5% |
| Rottweil R 903 | <<locked>> | 80% | 39,218 psi | 60% | 2992 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 88% | 48,153 psi | 74% | 3150 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 84% | 40,901 psi | 63% | 2995 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,907 psi | 75% | 3182 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,729 psi | 67% | 3071 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 90% | 47,427 psi | 73% | 3156 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,292 psi | 62% | 3048 fps | 97.5% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,792 psi | 76% | 3189 fps | 98.1% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,645 psi | 73% | 3166 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,023 psi | 75% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,118 psi | 63% | 2940 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 46,151 psi | 71% | 3061 fps | 95.2% |
| Somchem S335 | <<locked>> | 80% | 48,805 psi | 75% | 3094 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,632 psi | 76% | 3186 fps | 99.3% |
| Somchem S355 | <<locked>> | 80% | 39,813 psi | 61% | 2999 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 29,124 psi | 45% | 2789 fps | 95.3% |
| Somchem S385 | <<locked>> | 98% | 50,328 psi | 77% | 3228 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 55,085 psi | 84% | 3169 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,443 psi | 76% | 3091 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,440 psi | 70% | 3074 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,977 psi | 70% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,956 psi | 58% | 2923 fps | 98.6% |
| Vihtavuori N160 | <<locked>> | 84% | 38,914 psi | 60% | 2989 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 51,459 psi | 79% | 3212 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 44,469 psi | 68% | 3064 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 38,319 psi | 59% | 2982 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 90% | 35,375 psi | 54% | 2969 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,678 psi | 52% | 2828 fps | 96.3% |
| Winchester 748 | <<locked>> | 80% | 51,605 psi | 79% | 3258 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 45,730 psi | 70% | 3179 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 32,837 psi | 50% | 2976 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 47,471 psi | 73% | 3169 fps | 99.4% |
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 115 powders for .25-06 Rem. loaded with the .257 | 87gr | Frontier PH HPFB. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,458 fps; across all powders the maximum-charge window runs from 2,133 fps to 3,458 fps. Accurate 3100 gives the best case fill at 100 %, and 115 of the 115 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 87.0 gr projectile in 0.257" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, ADI AR 2213 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .25-06 Rem. with the .257 | 87gr | Frontier PH HPFB they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2213, Alliant Reloder-22, Alliant Reloder-25 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.