Load Specifications
Load data in caliber .25-06 Ackley Improved with .257 | 110gr | Hornady ELD-X bullet and 89 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and Alliant Reloder-26.
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 2700 | <<locked>> | 82% | 57,246 psi | 88% | 3022 fps | 99.2% |
| Accurate 3100 | <<locked>> | 98% | 57,305 psi | 88% | 3077 fps | 99.9% |
| Accurate 4064 | <<locked>> | 82% | 57,058 psi | 87% | 3005 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 58,914 psi | 90% | 3127 fps | 100% |
| Accurate High Country | <<locked>> | 96% | 58,798 psi | 90% | 3232 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 96% | 55,724 psi | 85% | 3163 fps | 96.5% |
| ADI AR 2208 | <<locked>> | 84% | 56,594 psi | 87% | 3038 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 55,927 psi | 86% | 3114 fps | 98.5% |
| ADI AR 2213 | <<locked>> | 98% | 57,348 psi | 88% | 3169 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,740 psi | 61% | 2864 fps | 96.7% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,144 psi | 86% | 3110 fps | 98.6% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 56,144 psi | 86% | 3110 fps | 98.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 57,914 psi | 89% | 3064 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 57,957 psi | 89% | 3087 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,753 psi | 85% | 3127 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 57,043 psi | 87% | 3146 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,405 psi | 85% | 3100 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 98% | 56,869 psi | 87% | 3166 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 57,870 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 3081 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 96% | 58,740 psi | 90% | 3241 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 55,724 psi | 85% | 3143 fps | 98.6% |
| Bofors RP3 | <<locked>> | 84% | 58,914 psi | 90% | 3077 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 56,869 psi | 87% | 3166 fps | 98.8% |
| Bofors RP7 | <<locked>> | 88% | 57,928 psi | 89% | 3071 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,487 psi | 76% | 3018 fps | 97% |
| Hodgdon H380 | <<locked>> | 82% | 55,521 psi | 85% | 3045 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 57,000 psi | 87% | 3123 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 86% | 56,246 psi | 86% | 3077 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 96% | 57,522 psi | 88% | 3110 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 56,260 psi | 86% | 3091 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 56,144 psi | 86% | 3045 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,950 psi | 75% | 3123 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 88% | 57,522 psi | 88% | 3156 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,666 psi | 56% | 1949 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 56,188 psi | 86% | 3022 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 58,508 psi | 90% | 3061 fps | 99.6% |
| IMR 4350 | <<locked>> | 90% | 55,782 psi | 85% | 3048 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 86% | 56,028 psi | 86% | 3041 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 58,972 psi | 90% | 3110 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 58,697 psi | 90% | 3094 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 59,016 psi | 90% | 3209 fps | 98.2% |
| Lovex S062 | <<locked>> | 82% | 56,565 psi | 87% | 3015 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 56,260 psi | 86% | 3038 fps | 99.9% |
| Lovex S070 | <<locked>> | 90% | 57,986 psi | 89% | 3084 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,836 psi | 78% | 2976 fps | 99.4% |
| Norma 203B | <<locked>> | 82% | 57,261 psi | 88% | 3071 fps | 100% |
| Norma 204 | <<locked>> | 90% | 56,956 psi | 87% | 3107 fps | 98.5% |
| Norma MRP | <<locked>> | 96% | 56,869 psi | 87% | 3192 fps | 99.6% |
| Norma URP | <<locked>> | 90% | 57,130 psi | 88% | 3104 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 58,392 psi | 89% | 3097 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 55,521 psi | 85% | 3159 fps | 97.9% |
| Ramshot Hunter | <<locked>> | 90% | 56,173 psi | 86% | 3107 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 53,838 psi | 82% | 3094 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,420 psi | 57% | 1995 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 58,871 psi | 90% | 3084 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 56,623 psi | 87% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 59,001 psi | 90% | 3146 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 57,203 psi | 88% | 3176 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,647 psi | 76% | 3123 fps | 99.3% |
| Rottweil R 902 | <<locked>> | 82% | 58,189 psi | 89% | 3025 fps | 100% |
| Rottweil R 903 | <<locked>> | 84% | 55,361 psi | 85% | 3022 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 57,348 psi | 88% | 3084 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 96% | 58,668 psi | 90% | 3150 fps | 99% |
| Rottweil R 907 | <<locked>> | 88% | 57,928 psi | 89% | 3071 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 88% | 56,260 psi | 86% | 3038 fps | 99.9% |
| Shooters World Precision | <<locked>> | 82% | 56,565 psi | 87% | 3015 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 57,986 psi | 89% | 3084 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 56,956 psi | 87% | 3081 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,898 psi | 86% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 55,869 psi | 86% | 2989 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 58,189 psi | 89% | 3146 fps | 98.9% |
| Somchem S355 | <<locked>> | 86% | 58,914 psi | 90% | 3071 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 55,535 psi | 85% | 3015 fps | 96.8% |
| Somchem S365 | <<locked>> | 92% | 57,261 psi | 88% | 3110 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 55,361 psi | 85% | 3061 fps | 99.1% |
| Vihtavuori N135 | <<locked>> | 82% | 58,798 psi | 90% | 2979 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 56,463 psi | 87% | 2989 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 55,477 psi | 85% | 3045 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 58,653 psi | 90% | 3094 fps | 99.3% |
| Vihtavuori N540 | <<locked>> | 82% | 57,319 psi | 88% | 2989 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 58,479 psi | 90% | 3107 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 56,594 psi | 87% | 3120 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 56,826 psi | 87% | 3182 fps | 97.4% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,460 psi | 80% | 3084 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 55,114 psi | 84% | 3002 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 57,000 psi | 87% | 3123 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,955 psi | 84% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 55,463 psi | 85% | 3054 fps | 98.4% |
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% | 53,708 psi | 82% | 2963 fps | 98.7% |
| Accurate 3100 | <<locked>> | 82% | 33,069 psi | 51% | 2602 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 53,809 psi | 82% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 41,684 psi | 64% | 2825 fps | 99.1% |
| Accurate High Country | <<locked>> | 90% | 47,398 psi | 73% | 3025 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 94% | 52,083 psi | 80% | 3097 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,038 psi | 77% | 2930 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,728 psi | 65% | 2864 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 92% | 46,833 psi | 72% | 2976 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 37,231 psi | 57% | 2799 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 43,091 psi | 66% | 2867 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 43,091 psi | 66% | 2867 fps | 95.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,952 psi | 78% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 54,360 psi | 83% | 3031 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,972 psi | 61% | 2835 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,919 psi | 70% | 2963 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,641 psi | 65% | 2858 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,596 psi | 62% | 2851 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,747 psi | 46% | 2575 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,750 psi | 52% | 2707 fps | 96% |
| Alliant Reloder-26 | 51.6 gr | 80% | 32,111 psi | 49% | 2694 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,844 psi | 66% | 2900 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 51,677 psi | 79% | 2969 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 40,596 psi | 62% | 2851 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 44,991 psi | 69% | 2838 fps | 97.3% |
| Hodgdon H1000 | <<locked>> | 96% | 43,149 psi | 66% | 2887 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 51,750 psi | 79% | 2982 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 43,366 psi | 66% | 2871 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 80% | 46,151 psi | 71% | 2894 fps | 96.8% |
| Hodgdon H4831 | <<locked>> | 92% | 50,270 psi | 77% | 2986 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 92% | 49,110 psi | 75% | 2966 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,623 psi | 58% | 2717 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 40,132 psi | 61% | 2917 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 42,656 psi | 65% | 2887 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,499 psi | 42% | 1749 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 52,649 psi | 81% | 2966 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 54,926 psi | 84% | 3002 fps | 99.3% |
| IMR 4350 | <<locked>> | 80% | 40,524 psi | 62% | 2759 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,354 psi | 71% | 2867 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 39,856 psi | 61% | 2772 fps | 98.8% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,515 psi | 74% | 2920 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 94% | 47,834 psi | 73% | 3009 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 53,026 psi | 81% | 2959 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,077 psi | 68% | 2818 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 42,293 psi | 65% | 2799 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 34,447 psi | 53% | 2638 fps | 95.6% |
| Norma 203B | <<locked>> | 80% | 53,693 psi | 82% | 3015 fps | 100% |
| Norma 204 | <<locked>> | 82% | 43,163 psi | 66% | 2851 fps | 95.5% |
| Norma MRP | 52.6 gr | 84% | 37,086 psi | 57% | 2799 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 41,176 psi | 63% | 2818 fps | 98.9% |
| Ramshot Big Game | <<locked>> | 80% | 54,462 psi | 83% | 3038 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 44,657 psi | 68% | 2953 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 40,074 psi | 61% | 2802 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 92% | 40,016 psi | 61% | 2825 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,021 psi | 43% | 1788 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,605 psi | 79% | 2966 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,733 psi | 75% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,568 psi | 64% | 2844 fps | 98.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,958 psi | 61% | 2851 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 37,086 psi | 57% | 2828 fps | 95.3% |
| Rottweil R 902 | <<locked>> | 80% | 54,824 psi | 84% | 2972 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 48,747 psi | 75% | 2917 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 47,108 psi | 72% | 2900 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 86% | 41,814 psi | 64% | 2841 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 44,991 psi | 69% | 2838 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,077 psi | 68% | 2818 fps | 98.6% |
| Shooters World Precision | <<locked>> | 80% | 53,026 psi | 81% | 2959 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 42,293 psi | 65% | 2799 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,082 psi | 77% | 2972 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 49,284 psi | 76% | 2805 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,062 psi | 66% | 2759 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,466 psi | 64% | 2835 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,791 psi | 75% | 2913 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,443 psi | 74% | 2890 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,724 psi | 58% | 2769 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,682 psi | 61% | 2762 fps | 95.7% |
| Vihtavuori N135 | <<locked>> | 80% | 55,347 psi | 85% | 2933 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 46,630 psi | 71% | 2835 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,525 psi | 65% | 2815 fps | 99.1% |
| Vihtavuori N165 | <<locked>> | 88% | 39,262 psi | 60% | 2743 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 53,548 psi | 82% | 2936 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 41,945 psi | 64% | 2815 fps | 98.9% |
| Vihtavuori N555 | <<locked>> | 80% | 33,214 psi | 51% | 2657 fps | 97.5% |
| Vihtavuori N560 | 57.6 gr | 92% | 49,400 psi | 76% | 3048 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 49,052 psi | 75% | 3022 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,553 psi | 64% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 43,584 psi | 67% | 2877 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,368 psi | 40% | 2552 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 88% | 41,872 psi | 64% | 2805 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 89 powders for .25-06 Ackley Improved loaded with the .257 | 110gr | Hornady ELD-X. Alliant Reloder-26 delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,949 fps to 3,241 fps. ADI AR 2225 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (450 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 110.0 gr projectile in 0.257" calls for a 1:9.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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. Norma MRP, Vihtavuori N560, Alliant Reloder-26 rank at the top here: for .25-06 Ackley Improved with the .257 | 110gr | Hornady ELD-X 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.