Load Specifications
Load data in caliber .25-06 Rem. with .257 | 122gr | Remington SP Extended-Range bullet and 85 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Alliant Reloder-26 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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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 82% | 58,566 psi | 90% | 2890 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 58,769 psi | 90% | 2946 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 58,726 psi | 90% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,507 psi | 87% | 2933 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,478 psi | 87% | 3041 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 96% | 57,595 psi | 88% | 3045 fps | 97.5% |
| ADI AR 2208 | <<locked>> | 84% | 57,841 psi | 89% | 2897 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,522 psi | 88% | 2989 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 96% | 55,114 psi | 84% | 2986 fps | 98% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,151 psi | 71% | 2812 fps | 96.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,901 psi | 63% | 2766 fps | 97.9% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 57,711 psi | 88% | 2986 fps | 99.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,593 psi | 85% | 2871 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,232 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 58,856 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,985 psi | 87% | 2976 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 98% | 58,784 psi | 90% | 3045 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,738 psi | 85% | 2959 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2956 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,333 psi | 86% | 3048 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,580 psi | 88% | 3022 fps | 99.2% |
| Bofors RP3 | <<locked>> | 82% | 56,695 psi | 87% | 2890 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,529 psi | 73% | 2884 fps | 97.1% |
| Bofors RP5 | <<locked>> | 98% | 58,784 psi | 90% | 3045 fps | 99.4% |
| Bofors RP7 | <<locked>> | 86% | 55,840 psi | 86% | 2884 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,647 psi | 78% | 2900 fps | 98% |
| Hodgdon H380 | <<locked>> | 82% | 56,782 psi | 87% | 2910 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,320 psi | 89% | 2986 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 57,493 psi | 88% | 2946 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 94% | 55,172 psi | 85% | 2923 fps | 97.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,798 psi | 89% | 2966 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,682 psi | 88% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,473 psi | 77% | 3009 fps | 99.1% |
| Hodgdon Superformance | <<locked>> | 86% | 54,984 psi | 84% | 2966 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 57% | 1837 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,319 psi | 88% | 2881 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,203 psi | 88% | 2920 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,246 psi | 88% | 2907 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,797 psi | 87% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,463 psi | 87% | 2913 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 98% | 56,579 psi | 87% | 3022 fps | 98.3% |
| Lovex S062 | <<locked>> | 82% | 57,740 psi | 88% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,653 psi | 88% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,869 psi | 86% | 2897 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,489 psi | 80% | 2858 fps | 99.8% |
| Norma 203B | <<locked>> | 82% | 58,682 psi | 90% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 90% | 58,160 psi | 89% | 2972 fps | 99.1% |
| Norma MRP | <<locked>> | 96% | 58,624 psi | 90% | 3064 fps | 99.9% |
| Norma URP | <<locked>> | 90% | 58,653 psi | 90% | 2972 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,334 psi | 88% | 3041 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 90% | 57,421 psi | 88% | 2972 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,709 psi | 85% | 2976 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,521 psi | 57% | 1877 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,594 psi | 87% | 2894 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 58,320 psi | 89% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,492 psi | 87% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,827 psi | 90% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,850 psi | 78% | 3005 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,884 psi | 87% | 2887 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,784 psi | 90% | 2956 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 94% | 56,115 psi | 86% | 2959 fps | 99.1% |
| Rottweil R 907 | <<locked>> | 86% | 55,840 psi | 86% | 2884 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,653 psi | 88% | 2904 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,740 psi | 88% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,869 psi | 86% | 2897 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,508 psi | 90% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,927 psi | 87% | 2759 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,087 psi | 87% | 2858 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,666 psi | 85% | 2956 fps | 99.1% |
| Somchem S355 | <<locked>> | 84% | 56,623 psi | 87% | 2881 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,710 psi | 87% | 2890 fps | 97.6% |
| Somchem S365 | <<locked>> | 92% | 58,856 psi | 90% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,724 psi | 87% | 2933 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 86% | 57,812 psi | 89% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,855 psi | 87% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,188 psi | 86% | 2910 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 58,494 psi | 90% | 2848 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 56,028 psi | 86% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 58,102 psi | 89% | 2986 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 58,523 psi | 90% | 3058 fps | 98.2% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,969 psi | 83% | 2966 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,710 psi | 87% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,668 psi | 90% | 2992 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,130 psi | 88% | 3094 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,130 psi | 88% | 2933 fps | 99.1% |
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 2700 | <<locked>> | 80% | 54,781 psi | 84% | 2831 fps | 99.2% |
| Accurate 3100 | <<locked>> | 80% | 31,836 psi | 49% | 2441 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 55,245 psi | 85% | 2818 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 42,873 psi | 66% | 2707 fps | 99.6% |
| Accurate High Country | 51.3 gr | 86% | 42,583 psi | 65% | 2785 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 92% | 49,763 psi | 76% | 2910 fps | 95.8% |
| ADI AR 2208 | <<locked>> | 80% | 51,213 psi | 78% | 2799 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 41,220 psi | 63% | 2694 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 90% | 44,889 psi | 69% | 2795 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 42,975 psi | 66% | 2746 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 96% | 35,969 psi | 55% | 2641 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,812 psi | 59% | 2635 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,243 psi | 80% | 2822 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,394 psi | 63% | 2720 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,558 psi | 73% | 2838 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 41,002 psi | 63% | 2684 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,044 psi | 60% | 2680 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,748 psi | 47% | 2477 fps | 98.5% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,618 psi | 47% | 2490 fps | 95.3% |
| Alliant Reloder-26 | 49.2 gr | 80% | 33,257 psi | 51% | 2602 fps | 97.4% |
| Bofors RP15 | <<locked>> | 88% | 38,754 psi | 59% | 2671 fps | 95% |
| Bofors RP3 | <<locked>> | 80% | 52,953 psi | 81% | 2835 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 41,408 psi | 63% | 2759 fps | 95.3% |
| Bofors RP5 | <<locked>> | 86% | 39,044 psi | 60% | 2680 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 46,137 psi | 71% | 2717 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 41,394 psi | 63% | 2713 fps | 95.3% |
| Hodgdon H380 | <<locked>> | 80% | 53,040 psi | 81% | 2851 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,657 psi | 68% | 2753 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 47,268 psi | 72% | 2772 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 90% | 48,211 psi | 74% | 2805 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,094 psi | 72% | 2785 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,030 psi | 60% | 2605 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,711 psi | 59% | 2749 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 43,961 psi | 67% | 2772 fps | 97.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,543 psi | 42% | 1640 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 53,896 psi | 83% | 2831 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,655 psi | 64% | 2644 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,514 psi | 73% | 2746 fps | 98.7% |
| IMR 4831 | <<locked>> | 80% | 41,162 psi | 63% | 2661 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 46,775 psi | 72% | 2746 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 90% | 43,105 psi | 66% | 2772 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 54,317 psi | 83% | 2822 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,208 psi | 69% | 2697 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 43,497 psi | 67% | 2684 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 31,285 psi | 48% | 2428 fps | 95.1% |
| Norma 203B | <<locked>> | 80% | 54,897 psi | 84% | 2877 fps | 100% |
| Norma 204 | <<locked>> | 80% | 41,365 psi | 63% | 2674 fps | 95.7% |
| Norma MRP | 48.9 gr | 82% | 35,607 psi | 55% | 2628 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 42,482 psi | 65% | 2703 fps | 99.5% |
| Ramshot Grand | <<locked>> | 90% | 43,033 psi | 66% | 2782 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 41,118 psi | 63% | 2687 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 90% | 38,247 psi | 59% | 2654 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,123 psi | 43% | 1680 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,982 psi | 81% | 2838 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,473 psi | 77% | 2887 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,786 psi | 66% | 2726 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,133 psi | 63% | 2736 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,621 psi | 55% | 2664 fps | 95.6% |
| Rottweil R 903 | <<locked>> | 80% | 50,154 psi | 77% | 2785 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,743 psi | 65% | 2674 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 40,393 psi | 62% | 2674 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 46,137 psi | 71% | 2717 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,208 psi | 69% | 2697 fps | 99.2% |
| Shooters World Precision | <<locked>> | 80% | 54,317 psi | 83% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,497 psi | 67% | 2684 fps | 98.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,169 psi | 78% | 2835 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,517 psi | 77% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,005 psi | 67% | 2638 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 40,030 psi | 61% | 2664 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,053 psi | 77% | 2782 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,557 psi | 71% | 2720 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 39,131 psi | 60% | 2657 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,752 psi | 55% | 2536 fps | 95.1% |
| Vihtavuori N150 | <<locked>> | 80% | 47,950 psi | 73% | 2707 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,642 psi | 67% | 2694 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 86% | 37,869 psi | 58% | 2579 fps | 95.5% |
| Vihtavuori N540 | <<locked>> | 80% | 54,766 psi | 84% | 2799 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,105 psi | 66% | 2697 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 80% | 34,418 psi | 53% | 2556 fps | 98.5% |
| Vihtavuori N560 | <<locked>> | 90% | 47,442 psi | 73% | 2867 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 94% | 44,019 psi | 67% | 2785 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,757 psi | 66% | 2657 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,889 psi | 69% | 2759 fps | 98.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,122 psi | 42% | 2464 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,190 psi | 62% | 2635 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 85 powders for .25-06 Rem. loaded with the .257 | 122gr | Remington SP Extended-Range. Winchester StaBALL HD delivers the highest muzzle velocity at 3,094 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,094 fps. ADI AR 2217 gives the best case fill at 100 %, and 85 of the 85 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 122.0 gr projectile in 0.257" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Accurate High Country, Alliant Reloder-26, Norma MRP rank at the top here: for .25-06 Rem. with the .257 | 122gr | Remington SP Extended-Range 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.