Load Specifications
Bullet:.257 | 100gr | Frontier BTSP
Bullet Manufacturer:Frontier Bullets
Bullet Weight:100 gr
Bullet Diameter:0.257"
Bullet Length:<<locked>>
Caliber:.25-06 Rem. load data
Case Length (l3):2.489"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:65.8 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:24"
Max. allowed Pressure:65,267 psi
Recommended Twist Rate:1:9.0
Load data in caliber .25-06 Rem. with .257 | 100gr | Frontier BTSP bullet and 105 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-16 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.
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% | 59,016 psi | 90% | 3061 fps | 100% |
| Accurate 2495 | <<locked>> | 84% | 55,535 psi | 85% | 3041 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,319 psi | 88% | 3100 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,952 psi | 78% | 3068 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 55,927 psi | 86% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,550 psi | 87% | 3192 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,753 psi | 85% | 3271 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 58,566 psi | 90% | 3179 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,246 psi | 86% | 3127 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,117 psi | 89% | 3235 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,188 psi | 88% | 3123 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 58,885 psi | 90% | 3091 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,245 psi | 85% | 3248 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 58,059 psi | 89% | 3228 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,797 psi | 87% | 3150 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,159 psi | 88% | 3176 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,421 psi | 88% | 3258 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 59,016 psi | 90% | 3284 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,188 psi | 88% | 3219 fps | 97.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,705 psi | 78% | 3146 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,776 psi | 73% | 3091 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,756 psi | 64% | 2986 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,911 psi | 84% | 3291 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 58,726 psi | 90% | 3196 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 58,088 psi | 89% | 3169 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,705 psi | 78% | 3146 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 57,363 psi | 88% | 3143 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,378 psi | 89% | 3100 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,508 psi | 88% | 3156 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,566 psi | 90% | 3186 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 55,434 psi | 85% | 3189 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 92% | 58,885 psi | 90% | 3205 fps | 97.8% |
| Hodgdon H4895 | <<locked>> | 82% | 55,579 psi | 85% | 3133 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,711 psi | 88% | 3173 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,912 psi | 86% | 3169 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,840 psi | 86% | 3225 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,158 psi | 55% | 1991 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,855 psi | 87% | 3136 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,202 psi | 86% | 3120 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,593 psi | 85% | 3107 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,668 psi | 90% | 3143 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 58,392 psi | 89% | 3176 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,943 psi | 90% | 3173 fps | 98.7% |
| IMR 4831 | <<locked>> | 96% | 57,072 psi | 87% | 3182 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 58,639 psi | 90% | 3205 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,188 psi | 88% | 3123 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,390 psi | 85% | 3097 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,203 psi | 88% | 3097 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,709 psi | 85% | 3104 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,958 psi | 90% | 3166 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 56,811 psi | 87% | 3153 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,192 psi | 65% | 2900 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 57,217 psi | 88% | 3120 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,740 psi | 88% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,420 psi | 86% | 3159 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,376 psi | 85% | 3163 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 53,911 psi | 83% | 3241 fps | 98.2% |
| Norma URP | <<locked>> | 94% | 55,376 psi | 85% | 3179 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 86% | 57,392 psi | 88% | 3186 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 58,059 psi | 89% | 3232 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 57,696 psi | 88% | 3146 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,566 psi | 88% | 3163 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,608 psi | 56% | 2034 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,537 psi | 90% | 3166 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,204 psi | 89% | 3248 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,624 psi | 90% | 3284 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,565 psi | 87% | 3215 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,216 psi | 85% | 3241 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 57,769 psi | 89% | 3097 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,841 psi | 89% | 3120 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,957 psi | 89% | 3163 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,072 psi | 86% | 3196 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 57,363 psi | 88% | 3143 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,958 psi | 90% | 3166 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,390 psi | 85% | 3097 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,709 psi | 85% | 3104 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,811 psi | 87% | 3153 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,854 psi | 86% | 3169 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,376 psi | 86% | 3123 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,014 psi | 87% | 3146 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,175 psi | 89% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,972 psi | 90% | 3045 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,201 psi | 85% | 3058 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,564 psi | 85% | 3189 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 57,769 psi | 89% | 3045 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,173 psi | 86% | 3114 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,638 psi | 88% | 3156 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 58,320 psi | 89% | 3238 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3176 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 84% | 58,595 psi | 90% | 3031 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,943 psi | 89% | 3077 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,610 psi | 90% | 3091 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,738 psi | 85% | 3077 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,464 psi | 88% | 3169 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,240 psi | 75% | 3025 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 82% | 57,769 psi | 89% | 3123 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 57,000 psi | 87% | 3091 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,884 psi | 87% | 3176 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,374 psi | 82% | 3176 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,711 psi | 88% | 3136 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,421 psi | 90% | 3173 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,434 psi | 85% | 3189 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,149 psi | 66% | 3130 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,217 psi | 88% | 3153 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,476 psi | 82% | 3104 fps | 96.5% |
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% | 55,680 psi | 85% | 3015 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 48,617 psi | 74% | 2936 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,862 psi | 72% | 2917 fps | 95.7% |
| Accurate 3100 | <<locked>> | 92% | 38,363 psi | 59% | 2815 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 45,992 psi | 70% | 2936 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,737 psi | 53% | 2756 fps | 95.7% |
| Accurate High Country | <<locked>> | 98% | 51,735 psi | 79% | 3199 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 51,605 psi | 79% | 3064 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,830 psi | 67% | 2900 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 50,894 psi | 78% | 3107 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,708 psi | 82% | 3068 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 55,042 psi | 84% | 3041 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,066 psi | 74% | 3120 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 50,908 psi | 78% | 3104 fps | 95.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,135 psi | 68% | 2930 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,181 psi | 72% | 3002 fps | 99.4% |
| Alliant Reloder-16 | 43.1 gr | 80% | 34,127 psi | 52% | 2766 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,740 psi | 59% | 2907 fps | 98.8% |
| Alliant Reloder-19 | <<locked>> | 96% | 50,212 psi | 77% | 3094 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,152 psi | 72% | 3077 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,298 psi | 46% | 2671 fps | 95.8% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,738 psi | 56% | 2854 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,273 psi | 54% | 2864 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,517 psi | 79% | 3074 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,324 psi | 68% | 2936 fps | 99.7% |
| Bofors RP5 | <<locked>> | 98% | 47,152 psi | 72% | 3077 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,367 psi | 68% | 2900 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,868 psi | 84% | 3048 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,664 psi | 82% | 3097 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,889 psi | 69% | 2943 fps | 98.1% |
| Hodgdon H414 | <<locked>> | 84% | 42,148 psi | 65% | 2933 fps | 95.3% |
| Hodgdon H4350 | <<locked>> | 86% | 48,414 psi | 74% | 3022 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 52,170 psi | 80% | 3077 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,589 psi | 48% | 2657 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,820 psi | 75% | 3051 fps | 100% |
| Hodgdon Superformance | 52.8 gr | 86% | 44,730 psi | 69% | 3012 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,818 psi | 41% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,734 psi | 76% | 3018 fps | 99.9% |
| IMR 3031 | <<locked>> | 80% | 52,518 psi | 80% | 3064 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,021 psi | 71% | 2940 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,327 psi | 74% | 2963 fps | 96.9% |
| IMR 4350 | <<locked>> | 88% | 45,295 psi | 69% | 2940 fps | 95.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,352 psi | 66% | 2884 fps | 95.5% |
| IMR 4831 | <<locked>> | 80% | 33,489 psi | 51% | 2707 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 48,370 psi | 74% | 3031 fps | 99.7% |
| IMR 8208 XBR | <<locked>> | 80% | 53,708 psi | 82% | 3068 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,590 psi | 79% | 3038 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,749 psi | 78% | 2989 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,224 psi | 71% | 2943 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 38,043 psi | 58% | 2766 fps | 95.4% |
| Lovex S070 | <<locked>> | 84% | 41,321 psi | 63% | 2858 fps | 95.3% |
| Lovex S071 | <<locked>> | 98% | 39,334 psi | 60% | 2838 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,357 psi | 77% | 3009 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,097 psi | 78% | 3015 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,528 psi | 71% | 2986 fps | 99.5% |
| Norma 204 | <<locked>> | 90% | 48,457 psi | 74% | 3038 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 43,540 psi | 67% | 3031 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 34,679 psi | 53% | 2756 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 46,775 psi | 72% | 3005 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 84% | 38,595 psi | 59% | 2858 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 53,954 psi | 83% | 3084 fps | 99.1% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,766 psi | 82% | 3100 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 42% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,947 psi | 69% | 2923 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,560 psi | 77% | 3120 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,191 psi | 63% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,432 psi | 53% | 2769 fps | 95.2% |
| ReloadSwiss RS 70 | 48.4 gr | 82% | 36,419 psi | 56% | 2838 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 54,563 psi | 84% | 3048 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,993 psi | 74% | 2959 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,568 psi | 64% | 2874 fps | 99.3% |
| Rottweil R 905 | <<locked>> | 96% | 48,965 psi | 75% | 3071 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,367 psi | 68% | 2900 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,043 psi | 58% | 2766 fps | 95.4% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,590 psi | 79% | 3038 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,224 psi | 71% | 2943 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 84% | 41,321 psi | 63% | 2858 fps | 95.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,627 psi | 65% | 2927 fps | 99% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,504 psi | 80% | 3058 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,009 psi | 77% | 3028 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,358 psi | 79% | 2949 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,250 psi | 66% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,598 psi | 65% | 2825 fps | 95.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,515 psi | 74% | 3064 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 51,010 psi | 78% | 2943 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,373 psi | 80% | 3051 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,989 psi | 64% | 2877 fps | 99.2% |
| Somchem S365 | <<locked>> | 80% | 31,314 psi | 48% | 2707 fps | 97.9% |
| Somchem S385 | <<locked>> | 92% | 43,671 psi | 67% | 2933 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 51,837 psi | 79% | 2936 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,066 psi | 74% | 2930 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,341 psi | 74% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,132 psi | 61% | 2805 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 36,100 psi | 55% | 2759 fps | 96.1% |
| Vihtavuori N165 | <<locked>> | 98% | 46,035 psi | 71% | 2963 fps | 95.4% |
| Vihtavuori N530 | <<locked>> | 80% | 54,128 psi | 83% | 3068 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,920 psi | 72% | 2930 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,752 psi | 55% | 2756 fps | 95.7% |
| Vihtavuori N555 | <<locked>> | 86% | 33,315 psi | 51% | 2756 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,679 psi | 55% | 2730 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 54,737 psi | 84% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 42,395 psi | 65% | 2940 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,674 psi | 44% | 2694 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,053 psi | 77% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,879 psi | 76% | 3041 fps | 95.6% |
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 105 powders for .25-06 Rem. loaded with the .257 | 100gr | Frontier BTSP. Alliant Reloder-26 delivers the highest muzzle velocity at 3,291 fps; across all powders the maximum-charge window runs from 1,991 fps to 3,291 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 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 100.0 gr projectile in 0.257" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, 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. ReloadSwiss RS 70, Alliant Reloder-16, Hodgdon Superformance rank at the top here: for .25-06 Rem. with the .257 | 100gr | Frontier BTSP 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.