Load Specifications
Load data in caliber .25-06 Rem. with .257 | 100gr | Reichenberg HDB Universal bullet and 100 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 and Winchester 760.
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% | 57,159 psi | 88% | 3068 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 58,755 psi | 90% | 3130 fps | 98.3% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,634 psi | 81% | 3097 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 57,450 psi | 88% | 3120 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,610 psi | 90% | 3228 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 57,856 psi | 89% | 3310 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 56,405 psi | 86% | 3150 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,493 psi | 88% | 3153 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,970 psi | 86% | 3205 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,581 psi | 90% | 3150 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 56,985 psi | 87% | 3281 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,465 psi | 90% | 3179 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,479 psi | 90% | 3199 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 58,987 psi | 90% | 3284 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,768 psi | 87% | 3255 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 58,842 psi | 90% | 3248 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 3182 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,385 psi | 76% | 3123 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 43,076 psi | 66% | 3022 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,348 psi | 88% | 3330 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,405 psi | 86% | 3163 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 55,782 psi | 85% | 3140 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,272 psi | 80% | 3182 fps | 96.7% |
| Bofors RP7 | <<locked>> | 92% | 58,784 psi | 90% | 3173 fps | 98.5% |
| Hodgdon BL-C2 | <<locked>> | 82% | 58,813 psi | 90% | 3179 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 56,130 psi | 86% | 3153 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 56,927 psi | 87% | 3215 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 56,768 psi | 87% | 3176 fps | 97.6% |
| Hodgdon H4895 | <<locked>> | 82% | 57,014 psi | 87% | 3163 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,521 psi | 85% | 3143 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,276 psi | 88% | 3192 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,580 psi | 88% | 3255 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 55% | 1998 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,204 psi | 89% | 3163 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,537 psi | 88% | 3140 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 56,927 psi | 87% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,318 psi | 86% | 3114 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 56,144 psi | 86% | 3143 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,826 psi | 87% | 3143 fps | 98.6% |
| IMR 4831 | <<locked>> | 96% | 58,929 psi | 90% | 3212 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,434 psi | 86% | 3176 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 59,030 psi | 90% | 3186 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 82% | 58,581 psi | 90% | 3150 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,840 psi | 87% | 3123 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,494 psi | 90% | 3123 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,101 psi | 87% | 3130 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,826 psi | 87% | 3140 fps | 99.4% |
| Lovex S070 | <<locked>> | 94% | 58,247 psi | 89% | 3182 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,555 psi | 67% | 2930 fps | 97% |
| Norma 201 | <<locked>> | 84% | 58,653 psi | 90% | 3146 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,622 psi | 85% | 3087 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,769 psi | 89% | 3186 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,029 psi | 87% | 3196 fps | 97.2% |
| Norma MRPᴾ | <<locked>> | 100% | 55,869 psi | 86% | 3278 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 56,971 psi | 87% | 3209 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 58,972 psi | 90% | 3212 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 55,825 psi | 86% | 3202 fps | 99.2% |
| Ramshot TAC | <<locked>> | 82% | 58,827 psi | 90% | 3173 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,753 psi | 56% | 2047 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,115 psi | 86% | 3133 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 55,970 psi | 86% | 3219 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,202 psi | 86% | 3251 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,421 psi | 90% | 3245 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,203 psi | 88% | 3278 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 59,045 psi | 90% | 3120 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,666 psi | 85% | 3091 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,622 psi | 85% | 3130 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,624 psi | 88% | 3173 fps | 96.3% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,189 psi | 89% | 3238 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 92% | 58,784 psi | 90% | 3173 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,826 psi | 87% | 3140 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,840 psi | 87% | 3123 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,101 psi | 87% | 3130 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,247 psi | 89% | 3182 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,421 psi | 88% | 3196 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,914 psi | 89% | 3153 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,624 psi | 90% | 3173 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,651 psi | 85% | 3022 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,913 psi | 87% | 3022 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,927 psi | 87% | 3091 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,682 psi | 88% | 3232 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 55,637 psi | 85% | 3018 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,377 psi | 88% | 3136 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,709 psi | 85% | 3130 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 56,144 psi | 86% | 3209 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,784 psi | 90% | 3205 fps | 98.5% |
| Vihtavuori N133 | <<locked>> | 82% | 56,159 psi | 86% | 3002 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,854 psi | 86% | 3051 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,347 psi | 86% | 3068 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,276 psi | 88% | 3104 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,695 psi | 85% | 3146 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,792 psi | 78% | 3054 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 58,247 psi | 89% | 3110 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,305 psi | 89% | 3202 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 55,259 psi | 85% | 3205 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,390 psi | 85% | 3110 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,217 psi | 88% | 3222 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,527 psi | 68% | 3166 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 58,798 psi | 90% | 3179 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,376 psi | 85% | 3140 fps | 97.1% |
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% | 49,879 psi | 76% | 2959 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,008 psi | 74% | 2946 fps | 96.2% |
| Accurate 3100 | <<locked>> | 92% | 39,972 psi | 61% | 2854 fps | 96% |
| Accurate 4064 | <<locked>> | 80% | 47,239 psi | 72% | 2963 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,795 psi | 55% | 2785 fps | 96.3% |
| Accurate High Country | <<locked>> | 98% | 53,809 psi | 82% | 3241 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 52,736 psi | 81% | 3091 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,831 psi | 69% | 2927 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 48,892 psi | 75% | 3074 fps | 95.5% |
| ADI Benchmark 8208 | <<locked>> | 80% | 54,781 psi | 84% | 3091 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,414 psi | 76% | 3150 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,223 psi | 69% | 2953 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,240 psi | 74% | 3025 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,244 psi | 54% | 2799 fps | 96.3% |
| Alliant Reloder-17 | 47.7 gr | 80% | 39,929 psi | 61% | 2940 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 48,385 psi | 74% | 3064 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 48,965 psi | 75% | 3117 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 84% | 29,312 psi | 45% | 2641 fps | 95.3% |
| Alliant Reloder-25 | <<locked>> | 96% | 37,753 psi | 58% | 2887 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 88% | 36,419 psi | 56% | 2900 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,750 psi | 81% | 3100 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 45,426 psi | 70% | 2963 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 48,965 psi | 75% | 3117 fps | 95.9% |
| Bofors RP7 | <<locked>> | 82% | 42,772 psi | 66% | 2874 fps | 95% |
| Hodgdon BL-C2 | <<locked>> | 80% | 54,984 psi | 84% | 3120 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 45,876 psi | 70% | 2969 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 40,640 psi | 62% | 2900 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 46,557 psi | 71% | 2989 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 53,301 psi | 82% | 3100 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,721 psi | 50% | 2690 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,212 psi | 77% | 3077 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 42,859 psi | 66% | 2976 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,948 psi | 41% | 1791 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,082 psi | 78% | 3048 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 53,882 psi | 83% | 3087 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,137 psi | 72% | 2966 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,559 psi | 76% | 2992 fps | 97.4% |
| IMR 4350 | <<locked>> | 86% | 43,598 psi | 67% | 2907 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,582 psi | 64% | 2851 fps | 95.1% |
| IMR 4831 | <<locked>> | 80% | 34,476 psi | 53% | 2736 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 49,487 psi | 76% | 3058 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,492 psi | 85% | 3127 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 54,781 psi | 84% | 3091 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 53,055 psi | 81% | 3064 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,779 psi | 79% | 3015 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 47,369 psi | 73% | 2969 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,001 psi | 60% | 2792 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 42,482 psi | 65% | 2887 fps | 95.8% |
| Lovex S071 | <<locked>> | 96% | 38,276 psi | 59% | 2818 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 51,488 psi | 79% | 3035 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,286 psi | 80% | 3035 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,616 psi | 73% | 3012 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 49,835 psi | 76% | 3071 fps | 95.6% |
| Norma MRP | <<locked>> | 92% | 41,930 psi | 64% | 2999 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 35,708 psi | 55% | 2782 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 48,037 psi | 74% | 3031 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 39,914 psi | 61% | 2890 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 55,129 psi | 84% | 3110 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 42% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,137 psi | 71% | 2949 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,127 psi | 80% | 3153 fps | 99.8% |
| ReloadSwiss RS 60 | 47.7 gr | 80% | 42,438 psi | 65% | 3009 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,621 psi | 55% | 2799 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 37,376 psi | 57% | 2867 fps | 95.9% |
| Rottweil R 901 | <<locked>> | 80% | 55,825 psi | 86% | 3074 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 49,153 psi | 75% | 2982 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,699 psi | 65% | 2904 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 54,099 psi | 83% | 3114 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 47,427 psi | 73% | 3045 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 42,772 psi | 66% | 2874 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,001 psi | 60% | 2792 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,055 psi | 81% | 3064 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,369 psi | 73% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 42,482 psi | 65% | 2887 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,874 psi | 67% | 2956 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,795 psi | 82% | 3087 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,300 psi | 79% | 3054 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,489 psi | 80% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,309 psi | 68% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 40,973 psi | 63% | 2795 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 46,992 psi | 72% | 3038 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 52,069 psi | 80% | 2966 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,650 psi | 82% | 3077 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,047 psi | 66% | 2900 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 32,271 psi | 49% | 2733 fps | 98.3% |
| Somchem S385 | <<locked>> | 92% | 45,005 psi | 69% | 2963 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 53,011 psi | 81% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,313 psi | 76% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,443 psi | 76% | 2959 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,118 psi | 63% | 2828 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 37,086 psi | 57% | 2785 fps | 96.6% |
| Vihtavuori N165 | <<locked>> | 96% | 44,266 psi | 68% | 2933 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,921 psi | 73% | 2949 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,666 psi | 56% | 2782 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 84% | 32,256 psi | 49% | 2726 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,593 psi | 56% | 2756 fps | 98.6% |
| Winchester 760 | 47.8 gr | 82% | 40,640 psi | 62% | 2900 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 29,617 psi | 45% | 2733 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,343 psi | 79% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 48,066 psi | 74% | 3012 fps | 95.3% |
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 | 100gr | Reichenberg HDB Universal. Alliant Reloder-26 delivers the highest muzzle velocity at 3,330 fps; across all powders the maximum-charge window runs from 1,998 fps to 3,330 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 100.0 gr projectile in 0.257" calls for a 1:11.0 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. Alliant Reloder-17, ReloadSwiss RS 60, Winchester 760 rank at the top here: for .25-06 Rem. with the .257 | 100gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, Baschieri & Pellagri 109, Hodgdon H1000 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.