Load Specifications
Load data in caliber .25-06 Rem. with .257 | 115gr | Frontier PH HPBT bullet and 97 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Norma MRP.
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>> | 82% | 57,058 psi | 87% | 2867 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 58,233 psi | 89% | 2943 fps | 99.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,739 psi | 87% | 2986 fps | 99.8% |
| Accurate 4064 | <<locked>> | 84% | 57,624 psi | 88% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,639 psi | 90% | 3038 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 58,320 psi | 89% | 3140 fps | 98% |
| Accurate MAGPRO | <<locked>> | 98% | 55,172 psi | 85% | 3068 fps | 96.1% |
| ADI AR 2208 | <<locked>> | 86% | 57,334 psi | 88% | 2959 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 56,014 psi | 86% | 3028 fps | 98.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 57,246 psi | 88% | 3081 fps | 97.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 57,029 psi | 87% | 3084 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 58,349 psi | 89% | 2982 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 58,610 psi | 90% | 3005 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,506 psi | 85% | 3041 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 57,043 psi | 87% | 3064 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,827 psi | 90% | 3068 fps | 98.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,405 psi | 86% | 3074 fps | 98.6% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 53,272 psi | 82% | 3002 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 46,253 psi | 71% | 2927 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,957 psi | 89% | 3153 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,619 psi | 79% | 2992 fps | 97.7% |
| Bofors RP3 | <<locked>> | 84% | 55,782 psi | 85% | 2946 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,405 psi | 86% | 3074 fps | 98.6% |
| Bofors RP7 | <<locked>> | 90% | 58,349 psi | 89% | 2986 fps | 99.2% |
| Hodgdon H380 | <<locked>> | 84% | 56,072 psi | 86% | 2966 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,898 psi | 87% | 3035 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 88% | 56,608 psi | 87% | 2995 fps | 98.6% |
| Hodgdon H4831 | <<locked>> | 98% | 57,580 psi | 88% | 3025 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 98% | 56,217 psi | 86% | 3002 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 56,115 psi | 86% | 2963 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,406 psi | 88% | 2999 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 45,266 psi | 69% | 2959 fps | 97% |
| Hodgdon Superformance | <<locked>> | 90% | 57,580 psi | 88% | 3074 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,564 psi | 56% | 1867 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,580 psi | 88% | 2959 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,652 psi | 87% | 2940 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,695 psi | 85% | 2923 fps | 99.3% |
| IMR 4350 | <<locked>> | 92% | 56,173 psi | 86% | 2966 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,608 psi | 87% | 2963 fps | 99.3% |
| IMR 4831 | <<locked>> | 94% | 59,059 psi | 90% | 3025 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 56,449 psi | 86% | 2982 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,668 psi | 90% | 3005 fps | 97.3% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,810 psi | 84% | 3051 fps | 97.1% |
| Lovex S060 | <<locked>> | 82% | 57,885 psi | 89% | 2923 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,956 psi | 87% | 2933 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,826 psi | 87% | 2956 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 58,247 psi | 89% | 2999 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,282 psi | 72% | 2835 fps | 98.9% |
| Norma 201 | <<locked>> | 82% | 58,291 psi | 89% | 2946 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,914 psi | 90% | 2936 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,899 psi | 89% | 2992 fps | 100% |
| Norma 204 | <<locked>> | 92% | 57,087 psi | 87% | 3018 fps | 98.3% |
| Norma MRP | <<locked>> | 98% | 56,333 psi | 86% | 3104 fps | 99.5% |
| Norma URP | <<locked>> | 92% | 57,188 psi | 88% | 3022 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 59,016 psi | 90% | 3018 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 55,187 psi | 85% | 3064 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 56,057 psi | 86% | 3022 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 49,574 psi | 76% | 2940 fps | 98.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,101 psi | 57% | 1909 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,738 psi | 85% | 2946 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,594 psi | 87% | 3058 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,929 psi | 90% | 3064 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 57,029 psi | 87% | 3087 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,513 psi | 70% | 2956 fps | 98.2% |
| Rottweil R 902 | <<locked>> | 84% | 58,914 psi | 90% | 2943 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,622 psi | 85% | 2940 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,493 psi | 88% | 2995 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 98% | 58,189 psi | 89% | 3058 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 90% | 58,349 psi | 89% | 2986 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,826 psi | 87% | 2956 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,956 psi | 87% | 2933 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 58,247 psi | 89% | 2999 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,421 psi | 88% | 3002 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,986 psi | 89% | 2972 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,769 psi | 90% | 2867 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,449 psi | 86% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,594 psi | 87% | 2910 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,696 psi | 88% | 3051 fps | 98.7% |
| Somchem S335 | <<locked>> | 82% | 58,610 psi | 90% | 2867 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 55,564 psi | 85% | 2936 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,695 psi | 85% | 2930 fps | 96.5% |
| Somchem S365 | <<locked>> | 94% | 56,927 psi | 87% | 3025 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,943 psi | 90% | 3031 fps | 99.3% |
| Vihtavuori N135 | <<locked>> | 82% | 55,796 psi | 85% | 2851 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 56,144 psi | 86% | 2867 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,898 psi | 87% | 2910 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,796 psi | 85% | 2963 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,447 psi | 83% | 2946 fps | 98.6% |
| Vihtavuori N540 | <<locked>> | 84% | 58,015 psi | 89% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 58,349 psi | 89% | 3018 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,956 psi | 86% | 3031 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 56,478 psi | 87% | 3094 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 55,288 psi | 85% | 2923 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 57,246 psi | 88% | 3038 fps | 99.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,921 psi | 75% | 3068 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,450 psi | 90% | 2982 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 55,463 psi | 85% | 2969 fps | 98.2% |
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 2495 | <<locked>> | 80% | 53,447 psi | 82% | 2818 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,010 psi | 78% | 2828 fps | 98.1% |
| Accurate 3100 | <<locked>> | 86% | 35,273 psi | 54% | 2589 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 50,647 psi | 78% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,001 psi | 60% | 2694 fps | 98.5% |
| Accurate High Country | 52.6 gr | 92% | 47,007 psi | 72% | 2943 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 96% | 51,547 psi | 79% | 3009 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 47,601 psi | 73% | 2802 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,917 psi | 66% | 2785 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 96% | 50,038 psi | 77% | 2953 fps | 95.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,982 psi | 81% | 3025 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 48,385 psi | 74% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,561 psi | 79% | 2900 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,608 psi | 58% | 2697 fps | 98.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,888 psi | 66% | 2828 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,757 psi | 66% | 2782 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 43,091 psi | 66% | 2831 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,702 psi | 42% | 2444 fps | 96.3% |
| Alliant Reloder-25 | <<locked>> | 90% | 33,605 psi | 51% | 2628 fps | 95.7% |
| Alliant Reloder-26 | 48.3 gr | 82% | 31,821 psi | 49% | 2618 fps | 95.7% |
| Bofors RP15 | <<locked>> | 94% | 42,496 psi | 65% | 2818 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 48,588 psi | 74% | 2835 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 43,091 psi | 66% | 2831 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 42,786 psi | 66% | 2707 fps | 96.5% |
| Hodgdon H380 | <<locked>> | 80% | 48,936 psi | 75% | 2848 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 80% | 40,785 psi | 62% | 2740 fps | 96.5% |
| Hodgdon H4350 | <<locked>> | 80% | 43,555 psi | 67% | 2759 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 94% | 50,038 psi | 77% | 2897 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 52,547 psi | 81% | 2943 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,157 psi | 54% | 2589 fps | 99% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,490 psi | 82% | 2943 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,438 psi | 65% | 2894 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 39,740 psi | 61% | 2746 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,311 psi | 42% | 1670 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 54,027 psi | 83% | 2907 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 50,082 psi | 77% | 2838 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,286 psi | 80% | 2867 fps | 98.9% |
| IMR 4350 | <<locked>> | 80% | 38,276 psi | 59% | 2628 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,961 psi | 67% | 2736 fps | 97.2% |
| IMR 4831 | <<locked>> | 80% | 37,347 psi | 57% | 2644 fps | 98.2% |
| IMR 4895 | <<locked>> | 80% | 52,924 psi | 81% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,791 psi | 75% | 2841 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 96% | 47,863 psi | 73% | 2923 fps | 95.4% |
| Lovex S060 | <<locked>> | 80% | 54,694 psi | 84% | 2874 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 50,415 psi | 77% | 2835 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,597 psi | 64% | 2687 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 39,929 psi | 61% | 2667 fps | 96.5% |
| Lovex S071 | <<locked>> | 90% | 34,200 psi | 52% | 2562 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 54,679 psi | 84% | 2894 fps | 100% |
| Norma 202 | <<locked>> | 80% | 55,579 psi | 85% | 2890 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,937 psi | 78% | 2884 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,497 psi | 67% | 2776 fps | 95.3% |
| Norma MRP | 50.4 gr | 88% | 39,610 psi | 61% | 2789 fps | 96.1% |
| Norma URP | <<locked>> | 80% | 38,609 psi | 59% | 2684 fps | 98.3% |
| Ramshot Big Game | <<locked>> | 80% | 51,271 psi | 79% | 2904 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 47,906 psi | 73% | 2936 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 37,420 psi | 57% | 2667 fps | 96.4% |
| Ramshot Magnum | <<locked>> | 94% | 39,653 psi | 61% | 2740 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,862 psi | 43% | 1709 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,849 psi | 75% | 2831 fps | 98.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,585 psi | 70% | 2884 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,740 psi | 59% | 2710 fps | 98.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 37,376 psi | 57% | 2713 fps | 97.5% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,378 psi | 60% | 2812 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 52,141 psi | 80% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,876 psi | 70% | 2782 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 47,587 psi | 73% | 2828 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 88% | 41,756 psi | 64% | 2762 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 42,786 psi | 66% | 2707 fps | 96.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,597 psi | 64% | 2687 fps | 97.9% |
| Shooters World Precision | <<locked>> | 80% | 50,415 psi | 77% | 2835 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,929 psi | 61% | 2667 fps | 96.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 47,050 psi | 72% | 2838 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,505 psi | 84% | 2920 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 55,376 psi | 85% | 2822 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,934 psi | 72% | 2687 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,857 psi | 63% | 2631 fps | 96.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 41,379 psi | 63% | 2756 fps | 95.1% |
| Somchem S335 | <<locked>> | 80% | 55,071 psi | 84% | 2818 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 46,050 psi | 71% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 52,011 psi | 80% | 2867 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 35,012 psi | 54% | 2641 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 39,798 psi | 61% | 2690 fps | 95.5% |
| Vihtavuori N135 | <<locked>> | 80% | 52,533 psi | 80% | 2808 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,649 psi | 81% | 2818 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,034 psi | 67% | 2710 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,045 psi | 61% | 2687 fps | 98.6% |
| Vihtavuori N165 | <<locked>> | 92% | 41,684 psi | 64% | 2720 fps | 95.8% |
| Vihtavuori N540 | <<locked>> | 80% | 50,865 psi | 78% | 2812 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 39,392 psi | 60% | 2684 fps | 98.3% |
| Vihtavuori N555 | <<locked>> | 80% | 30,661 psi | 47% | 2523 fps | 96.4% |
| Vihtavuori N560 | <<locked>> | 94% | 49,124 psi | 75% | 2963 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,088 psi | 60% | 2651 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 41,017 psi | 63% | 2743 fps | 96.6% |
| Winchester StaBALL HD | <<locked>> | 82% | 26,165 psi | 40% | 2474 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,853 psi | 84% | 2930 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,887 psi | 64% | 2730 fps | 95% |
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 104 powders for .25-06 Rem. loaded with the .257 | 115gr | Frontier PH HPBT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,867 fps to 3,153 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 115.0 gr projectile in 0.257" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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-26, Accurate High Country, Norma MRP rank at the top here: for .25-06 Rem. with the .257 | 115gr | Frontier PH HPBT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, ADI AR 2225, Baschieri & Pellagri 109 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.