Load Specifications
Load data in caliber .25-06 Rem. with .257 | 100gr | Sierra MatchKing bullet and 102 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.
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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 2495 | <<locked>> | 84% | 56,637 psi | 87% | 3058 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 58,320 psi | 89% | 3123 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,286 psi | 80% | 3094 fps | 98.7% |
| Accurate 4064 | <<locked>> | 86% | 56,942 psi | 87% | 3114 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,117 psi | 89% | 3219 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,450 psi | 88% | 3307 fps | 96.6% |
| ADI AR 2206H | <<locked>> | 82% | 55,941 psi | 86% | 3143 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,392 psi | 88% | 3150 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,593 psi | 85% | 3199 fps | 97.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,131 psi | 89% | 3143 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,826 psi | 87% | 3281 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,030 psi | 89% | 3173 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,378 psi | 89% | 3196 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 58,566 psi | 90% | 3278 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,304 psi | 86% | 3248 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 58,436 psi | 90% | 3241 fps | 97.7% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 3173 fps | 96.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,037 psi | 75% | 3114 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,786 psi | 66% | 3012 fps | 97.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 56,579 psi | 87% | 3320 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,275 psi | 86% | 3159 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,332 psi | 85% | 3133 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,953 psi | 80% | 3173 fps | 96.6% |
| Bofors RP7 | <<locked>> | 92% | 58,378 psi | 89% | 3166 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 82% | 58,726 psi | 90% | 3176 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 55,999 psi | 86% | 3150 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 56,492 psi | 87% | 3209 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 56,362 psi | 86% | 3169 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 56,550 psi | 87% | 3153 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,405 psi | 85% | 3140 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,145 psi | 88% | 3192 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,159 psi | 88% | 3248 fps | 98.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,042 psi | 55% | 1998 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,740 psi | 88% | 3156 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,348 psi | 88% | 3136 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,782 psi | 87% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,912 psi | 86% | 3104 fps | 98.5% |
| IMR 4350 | <<locked>> | 94% | 55,782 psi | 85% | 3136 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,405 psi | 86% | 3136 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 58,523 psi | 90% | 3209 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,318 psi | 86% | 3173 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 58,726 psi | 90% | 3179 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 82% | 58,131 psi | 89% | 3143 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,362 psi | 86% | 3114 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,378 psi | 89% | 3120 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 56,956 psi | 87% | 3127 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,724 psi | 87% | 3136 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 57,856 psi | 89% | 3176 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,163 psi | 66% | 2923 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 58,175 psi | 89% | 3140 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,477 psi | 85% | 3084 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,667 psi | 88% | 3182 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,666 psi | 87% | 3192 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 55,477 psi | 85% | 3268 fps | 98.6% |
| Norma URP | <<locked>> | 94% | 56,521 psi | 87% | 3199 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 58,871 psi | 90% | 3209 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,405 psi | 85% | 3192 fps | 99.1% |
| Ramshot TAC | <<locked>> | 82% | 58,726 psi | 90% | 3169 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 58,711 psi | 90% | 3182 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,738 psi | 56% | 2044 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,724 psi | 85% | 3127 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,477 psi | 85% | 3209 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,057 psi | 86% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,276 psi | 89% | 3241 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,826 psi | 87% | 3271 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 58,856 psi | 90% | 3117 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,506 psi | 85% | 3091 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,477 psi | 85% | 3130 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,276 psi | 88% | 3166 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,754 psi | 88% | 3228 fps | 97.7% |
| Rottweil R 907 | <<locked>> | 92% | 58,378 psi | 89% | 3166 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,724 psi | 87% | 3136 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,362 psi | 86% | 3114 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 56,956 psi | 87% | 3127 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 57,856 psi | 89% | 3176 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,000 psi | 87% | 3189 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,508 psi | 88% | 3146 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,160 psi | 89% | 3166 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,492 psi | 85% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,492 psi | 87% | 3015 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,507 psi | 87% | 3084 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 3225 fps | 97.6% |
| Somchem S335 | <<locked>> | 84% | 58,668 psi | 90% | 3061 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,290 psi | 88% | 3133 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 58,827 psi | 90% | 3176 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 55,999 psi | 86% | 3205 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,392 psi | 89% | 3199 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 55,970 psi | 86% | 2999 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,695 psi | 85% | 3048 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,898 psi | 86% | 3058 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,840 psi | 87% | 3097 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 58,943 psi | 90% | 3196 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,415 psi | 77% | 3048 fps | 96.7% |
| Vihtavuori N530 | <<locked>> | 82% | 58,711 psi | 90% | 3140 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 58,117 psi | 89% | 3107 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,204 psi | 89% | 3202 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,824 psi | 84% | 3202 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,998 psi | 84% | 3100 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,826 psi | 87% | 3215 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,208 psi | 68% | 3159 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 58,363 psi | 89% | 3173 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,998 psi | 84% | 3133 fps | 96.9% |
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 2495 | <<locked>> | 80% | 49,719 psi | 76% | 2956 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 47,892 psi | 73% | 2940 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 39,595 psi | 61% | 2844 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,050 psi | 72% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,607 psi | 55% | 2779 fps | 96.2% |
| Accurate High Country | <<locked>> | 98% | 53,388 psi | 82% | 3235 fps | 95.7% |
| ADI AR 2206H | <<locked>> | 80% | 52,562 psi | 81% | 3087 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,672 psi | 68% | 2923 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 48,559 psi | 74% | 3068 fps | 95.4% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,636 psi | 84% | 3087 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,240 psi | 75% | 3146 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,063 psi | 69% | 2953 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,095 psi | 74% | 3022 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,867 psi | 53% | 2789 fps | 96.1% |
| Alliant Reloder-17 | 47.4 gr | 80% | 39,523 psi | 61% | 2930 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,993 psi | 74% | 3054 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,646 psi | 75% | 3110 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,008 psi | 44% | 2631 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,710 psi | 58% | 2887 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 36,303 psi | 56% | 2897 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,359 psi | 80% | 3094 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 45,266 psi | 69% | 2959 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 48,646 psi | 75% | 3110 fps | 95.7% |
| Bofors RP7 | <<locked>> | 84% | 45,411 psi | 70% | 2930 fps | 95.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,868 psi | 84% | 3117 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,730 psi | 70% | 2966 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 43,221 psi | 66% | 2959 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 84% | 46,427 psi | 71% | 2986 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 53,127 psi | 81% | 3097 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,372 psi | 50% | 2680 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,777 psi | 76% | 3071 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,540 psi | 65% | 2966 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,890 psi | 41% | 1788 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,952 psi | 78% | 3045 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,679 psi | 82% | 3084 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,963 psi | 72% | 2963 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,153 psi | 75% | 2986 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 43,221 psi | 66% | 2900 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,452 psi | 64% | 2848 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 34,345 psi | 53% | 2730 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 49,313 psi | 76% | 3054 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,143 psi | 84% | 3120 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 54,636 psi | 84% | 3087 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,895 psi | 81% | 3061 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,663 psi | 79% | 3012 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 47,181 psi | 72% | 2963 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,827 psi | 59% | 2789 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 42,105 psi | 65% | 2877 fps | 95.7% |
| Lovex S071 | <<locked>> | 96% | 37,942 psi | 58% | 2808 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 51,343 psi | 79% | 3028 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,098 psi | 80% | 3031 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,442 psi | 73% | 3005 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,443 psi | 76% | 3061 fps | 95.5% |
| Norma MRP | <<locked>> | 92% | 41,626 psi | 64% | 2992 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 35,520 psi | 54% | 2776 fps | 96% |
| Ramshot Big Game | <<locked>> | 80% | 47,892 psi | 73% | 3028 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 39,581 psi | 61% | 2881 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 54,694 psi | 84% | 3104 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 54,897 psi | 84% | 3123 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 42% | 1831 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,745 psi | 70% | 2943 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,967 psi | 80% | 3150 fps | 99.8% |
| ReloadSwiss RS 60 | 47.4 gr | 80% | 42,047 psi | 64% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,462 psi | 54% | 2795 fps | 95.8% |
| ReloadSwiss RS 70 | 49.4 gr | 82% | 37,289 psi | 57% | 2864 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 55,332 psi | 85% | 3064 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 48,994 psi | 75% | 2979 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,496 psi | 65% | 2897 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 53,722 psi | 82% | 3107 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 94% | 47,050 psi | 72% | 3038 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 84% | 45,411 psi | 70% | 2930 fps | 95.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,827 psi | 59% | 2789 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,895 psi | 81% | 3061 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,181 psi | 72% | 2963 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 42,105 psi | 65% | 2877 fps | 95.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,743 psi | 67% | 2953 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,679 psi | 82% | 3084 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,155 psi | 78% | 3054 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,054 psi | 80% | 2966 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,888 psi | 67% | 2815 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,625 psi | 62% | 2785 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,615 psi | 71% | 3028 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 51,953 psi | 80% | 2963 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,243 psi | 82% | 3071 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,902 psi | 66% | 2900 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 32,126 psi | 49% | 2730 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 44,918 psi | 69% | 2959 fps | 95.6% |
| Vihtavuori N133 | <<locked>> | 80% | 52,547 psi | 81% | 2949 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,849 psi | 75% | 2946 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,269 psi | 75% | 2956 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,988 psi | 63% | 2825 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,956 psi | 57% | 2782 fps | 96.5% |
| Vihtavuori N165 | <<locked>> | 98% | 47,210 psi | 72% | 2989 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 55,100 psi | 84% | 3087 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 47,747 psi | 73% | 2946 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,550 psi | 56% | 2779 fps | 96.1% |
| Vihtavuori N555 | <<locked>> | 84% | 31,923 psi | 49% | 2717 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,274 psi | 56% | 2746 fps | 98.5% |
| Winchester 760 | <<locked>> | 84% | 43,482 psi | 67% | 2963 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,327 psi | 45% | 2723 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,227 psi | 78% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,718 psi | 73% | 3005 fps | 95.2% |
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 116 powders for .25-06 Rem. loaded with the .257 | 100gr | Sierra MatchKing. Alliant Reloder-26 delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,320 fps. Accurate 3100 gives the best case fill at 100 %, and 116 of the 116 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 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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 | 100gr | Sierra MatchKing they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Hodgdon H1000, Hodgdon Retumbo 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.