Load Specifications
Load data in caliber .25-06 Rem. with .257 | 87gr | Remington HP Power-Lokt 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 70, Hodgdon Superformance 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.
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% | 55,999 psi | 86% | 3215 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,492 psi | 85% | 3235 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,158 psi | 85% | 3284 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,158 psi | 85% | 3284 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,419 psi | 85% | 3222 fps | 96.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 46,978 psi | 72% | 3159 fps | 96.5% |
| Accurate 4064 | <<locked>> | 88% | 55,564 psi | 85% | 3287 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,405 psi | 86% | 3373 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 86% | 58,958 psi | 90% | 3379 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 90% | 56,623 psi | 87% | 3320 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,479 psi | 88% | 3320 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,332 psi | 85% | 3248 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,564 psi | 85% | 3442 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,840 psi | 87% | 3340 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 57,246 psi | 88% | 3366 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,145 psi | 88% | 3438 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 94% | 59,016 psi | 90% | 3478 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,048 psi | 67% | 3186 fps | 99.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,676 psi | 78% | 3389 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,419 psi | 85% | 3327 fps | 99.4% |
| Bofors RP3 | <<locked>> | 90% | 57,885 psi | 89% | 3360 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,740 psi | 88% | 3323 fps | 97.1% |
| Hodgdon Benchmark | <<locked>> | 84% | 58,958 psi | 90% | 3304 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,827 psi | 89% | 3353 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 57,348 psi | 88% | 3307 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 58,755 psi | 90% | 3373 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 92% | 56,710 psi | 87% | 3386 fps | 97.6% |
| Hodgdon H4350 | <<locked>> | 96% | 56,956 psi | 87% | 3350 fps | 96.3% |
| Hodgdon H4895 | <<locked>> | 84% | 55,753 psi | 85% | 3327 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,232 psi | 88% | 3353 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,014 psi | 86% | 3363 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 56,028 psi | 86% | 3399 fps | 97.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 55% | 2133 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,043 psi | 86% | 3314 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 58,059 psi | 89% | 3346 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 58,653 psi | 90% | 3343 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,841 psi | 89% | 3310 fps | 97.7% |
| IMR 4350 | <<locked>> | 98% | 58,233 psi | 89% | 3346 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,883 psi | 86% | 3301 fps | 97.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 54,027 psi | 83% | 3314 fps | 99.2% |
| IMR 4895 | <<locked>> | 88% | 58,755 psi | 90% | 3399 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,479 psi | 88% | 3320 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,506 psi | 85% | 3291 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,696 psi | 88% | 3294 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 56,043 psi | 86% | 3297 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,622 psi | 85% | 3291 fps | 98.4% |
| Lovex S070 | <<locked>> | 96% | 56,797 psi | 87% | 3330 fps | 97.7% |
| Norma 201 | <<locked>> | 86% | 57,479 psi | 88% | 3317 fps | 100% |
| Norma 202 | <<locked>> | 86% | 58,291 psi | 89% | 3320 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,507 psi | 87% | 3350 fps | 99.9% |
| Norma MRPᴾ | <<locked>> | 100% | 49,951 psi | 77% | 3333 fps | 96.1% |
| Norma URP | <<locked>> | 98% | 58,813 psi | 90% | 3419 fps | 99.6% |
| Ramshot Big Game | <<locked>> | 88% | 57,667 psi | 88% | 3376 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 98% | 58,015 psi | 89% | 3409 fps | 98.6% |
| Ramshot TAC | <<locked>> | 84% | 58,175 psi | 89% | 3337 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,972 psi | 89% | 3356 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 82% | 58,639 psi | 90% | 3320 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,100 psi | 55% | 2175 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 58,740 psi | 90% | 3346 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 58,334 psi | 89% | 3445 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 58,494 psi | 90% | 3481 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,333 psi | 86% | 3392 fps | 99.3% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,550 psi | 85% | 3422 fps | 99.1% |
| Rottweil R 901 | <<locked>> | 84% | 58,030 psi | 89% | 3297 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 58,015 psi | 89% | 3314 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,740 psi | 88% | 3350 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 57,740 psi | 88% | 3323 fps | 97.1% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,622 psi | 85% | 3291 fps | 98.4% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,506 psi | 85% | 3291 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,043 psi | 86% | 3297 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,797 psi | 87% | 3330 fps | 97.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,825 psi | 86% | 3353 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,739 psi | 87% | 3310 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 57,508 psi | 88% | 3340 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 58,610 psi | 90% | 3251 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,898 psi | 86% | 3192 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,840 psi | 86% | 3238 fps | 97.3% |
| Somchem S335 | <<locked>> | 86% | 58,117 psi | 89% | 3241 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,478 psi | 87% | 3301 fps | 99.8% |
| Somchem S355 | <<locked>> | 92% | 57,957 psi | 89% | 3350 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,711 psi | 88% | 3422 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,142 psi | 81% | 3278 fps | 96.2% |
| Unknown powder | <<locked>> | 94% | 56,101 psi | 86% | 3369 fps | 99% |
| Vihtavuori N130 | <<locked>> | 82% | 57,841 psi | 89% | 3205 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 58,914 psi | 90% | 3232 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 58,117 psi | 89% | 3278 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 58,987 psi | 90% | 3291 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 55,680 psi | 85% | 3264 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,595 psi | 88% | 3353 fps | 99.4% |
| Vihtavuori N530 | <<locked>> | 84% | 58,363 psi | 89% | 3323 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,130 psi | 88% | 3281 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 56,797 psi | 87% | 3356 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,284 psi | 76% | 3281 fps | 99% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 58,131 psi | 89% | 3327 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,710 psi | 87% | 3386 fps | 97.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 40,001 psi | 61% | 3202 fps | 99.2% |
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% | 52,547 psi | 81% | 3163 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,571 psi | 70% | 3074 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,474 psi | 79% | 3225 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,474 psi | 79% | 3225 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,851 psi | 79% | 3159 fps | 95.7% |
| Accurate 3100 | <<locked>> | 98% | 43,613 psi | 67% | 3091 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 43,076 psi | 66% | 3064 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 36,767 psi | 56% | 2969 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 48,457 psi | 74% | 3192 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 41,205 psi | 63% | 3015 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,502 psi | 77% | 3199 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 51,750 psi | 79% | 3192 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,730 psi | 69% | 3225 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,191 psi | 63% | 3041 fps | 98.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,092 psi | 68% | 3114 fps | 97.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 36,361 psi | 56% | 2986 fps | 95% |
| Alliant Reloder-17 | 48 gr | 80% | 35,955 psi | 55% | 2999 fps | 96.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 34,127 psi | 52% | 2933 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 94% | 40,451 psi | 62% | 3153 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,196 psi | 74% | 3189 fps | 98.4% |
| Bofors RP3 | <<locked>> | 80% | 41,118 psi | 63% | 3045 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 50,647 psi | 78% | 3196 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,228 psi | 80% | 3192 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,183 psi | 77% | 3225 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,795 psi | 82% | 3251 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,771 psi | 64% | 3045 fps | 96.1% |
| Hodgdon H414 | <<locked>> | 86% | 45,977 psi | 70% | 3182 fps | 95% |
| Hodgdon H4350 | <<locked>> | 94% | 53,519 psi | 82% | 3287 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,921 psi | 75% | 3205 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 33,620 psi | 52% | 2867 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,641 psi | 65% | 3110 fps | 98.9% |
| Hodgdon Superformance | 57.1 gr | 90% | 48,414 psi | 74% | 3251 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,513 psi | 41% | 1909 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,584 psi | 67% | 3077 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 45,020 psi | 69% | 3130 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,335 psi | 62% | 2989 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 86% | 48,167 psi | 74% | 3130 fps | 95.5% |
| IMR 4350 | <<locked>> | 94% | 51,474 psi | 79% | 3228 fps | 95.9% |
| IMR 4451 Enduron | <<locked>> | 88% | 49,182 psi | 75% | 3173 fps | 95.7% |
| IMR 4831 | <<locked>> | 88% | 36,564 psi | 56% | 2946 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 45,194 psi | 69% | 3150 fps | 98.7% |
| IMR 8208 XBR | <<locked>> | 80% | 50,502 psi | 77% | 3199 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 48,225 psi | 74% | 3166 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,051 psi | 74% | 3120 fps | 99.1% |
| Lovex S062 | <<locked>> | 80% | 43,381 psi | 66% | 3064 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 43,236 psi | 66% | 3051 fps | 95.7% |
| Lovex S070 | <<locked>> | 90% | 46,891 psi | 72% | 3143 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,674 psi | 73% | 3143 fps | 99.7% |
| Norma 202 | <<locked>> | 80% | 47,993 psi | 74% | 3150 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,453 psi | 67% | 3100 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 46,514 psi | 71% | 3258 fps | 95% |
| Norma URP | <<locked>> | 86% | 39,349 psi | 60% | 3031 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 43,482 psi | 67% | 3114 fps | 98.2% |
| Ramshot Hunter | <<locked>> | 90% | 43,990 psi | 67% | 3143 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 50,778 psi | 78% | 3205 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,705 psi | 78% | 3232 fps | 99.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 54,665 psi | 84% | 3255 fps | 99.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,890 psi | 41% | 1955 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 45,179 psi | 69% | 3094 fps | 95.4% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,065 psi | 72% | 3238 fps | 98.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 38,261 psi | 59% | 3077 fps | 99.4% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 39,349 psi | 60% | 3051 fps | 95.6% |
| ReloadSwiss RS 70 | 53.6 gr | 88% | 41,771 psi | 64% | 3130 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 51,590 psi | 79% | 3196 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,194 psi | 69% | 3084 fps | 99.4% |
| Rottweil R 903 | <<locked>> | 80% | 38,841 psi | 60% | 2982 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 90% | 50,647 psi | 78% | 3196 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 86% | 43,236 psi | 66% | 3051 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,225 psi | 74% | 3166 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,381 psi | 66% | 3064 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 90% | 46,891 psi | 72% | 3143 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,726 psi | 61% | 3031 fps | 97.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,458 psi | 76% | 3179 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,050 psi | 72% | 3150 fps | 98.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,646 psi | 75% | 3091 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,770 psi | 62% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 48,878 psi | 75% | 3114 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 48,443 psi | 74% | 3087 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,008 psi | 75% | 3173 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 39,436 psi | 60% | 2989 fps | 97.8% |
| Somchem S365 | <<locked>> | 80% | 28,848 psi | 44% | 2779 fps | 95% |
| Somchem S385 | <<locked>> | 98% | 49,777 psi | 76% | 3215 fps | 95.4% |
| Unknown powder | <<locked>> | 84% | 39,856 psi | 61% | 3038 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 54,665 psi | 84% | 3159 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,052 psi | 75% | 3081 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,005 psi | 69% | 3068 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,585 psi | 70% | 3074 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 37,637 psi | 58% | 2913 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 84% | 38,334 psi | 59% | 2976 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 50,792 psi | 78% | 3199 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 80% | 43,888 psi | 67% | 3051 fps | 100% |
| Vihtavuori N550 | <<locked>> | 84% | 38,014 psi | 58% | 2976 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 35,012 psi | 54% | 2959 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,286 psi | 51% | 2815 fps | 96% |
| Winchester 760 | <<locked>> | 86% | 45,977 psi | 70% | 3182 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 94% | 32,474 psi | 50% | 2959 fps | 95.9% |
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 | 87gr | Remington HP Power-Lokt. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,481 fps; across all powders the maximum-charge window runs from 2,133 fps to 3,481 fps. Accurate 3100 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 55–90 %, leaving at least 10 % headroom. The 87.0 gr projectile in 0.257" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Alliant Reloder-23, Alliant Reloder-26 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .25-06 Rem. with the .257 | 87gr | Remington HP Power-Lokt 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.