Load Specifications
Load data in caliber .264 Win. Mag. with .264 | 140gr | Hornady ECX bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Winchester StaBALL HD.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 53,156 psi | 85% | 2890 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,027 psi | 87% | 2913 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 55,854 psi | 90% | 3054 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 88% | 55,172 psi | 88% | 2986 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,040 psi | 85% | 2992 fps | 99.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 55,013 psi | 88% | 3022 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,371 psi | 79% | 2982 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 55,259 psi | 89% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,636 psi | 88% | 2972 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,272 psi | 85% | 2989 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,940 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,679 psi | 88% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,332 psi | 89% | 3045 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,677 psi | 83% | 3038 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,418 psi | 87% | 2956 fps | 97.6% |
| Bofors RP15 | <<locked>> | 94% | 56,260 psi | 90% | 3035 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 54,317 psi | 87% | 3031 fps | 99.8% |
| Bofors RP5 | <<locked>> | 90% | 53,272 psi | 85% | 2989 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,709 psi | 89% | 2913 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 52,591 psi | 84% | 2982 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 82% | 55,651 psi | 89% | 2972 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 56,405 psi | 90% | 2986 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 55,274 psi | 89% | 2969 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 55,521 psi | 89% | 2890 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,577 psi | 86% | 3107 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 56,420 psi | 90% | 3015 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 60% | 1860 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,317 psi | 87% | 2907 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,331 psi | 87% | 2904 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,664 psi | 86% | 2913 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 92% | 55,056 psi | 88% | 3035 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,628 psi | 72% | 2884 fps | 98.5% |
| Lovex S065 | <<locked>> | 82% | 54,607 psi | 88% | 2881 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 56,347 psi | 90% | 2933 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,549 psi | 87% | 2910 fps | 100% |
| Norma 204 | <<locked>> | 84% | 55,419 psi | 89% | 2966 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 45,223 psi | 73% | 2913 fps | 99.8% |
| Norma MRP | <<locked>> | 88% | 53,229 psi | 85% | 3005 fps | 100% |
| Norma URP | <<locked>> | 84% | 56,130 psi | 90% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 56,043 psi | 90% | 3058 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 55,172 psi | 88% | 2963 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 54,288 psi | 87% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,290 psi | 61% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,157 psi | 87% | 2936 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 52,779 psi | 85% | 2969 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,925 psi | 86% | 3094 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 53,258 psi | 85% | 3054 fps | 99% |
| Rottweil R 904 | <<locked>> | 88% | 56,086 psi | 90% | 2953 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 88% | 54,346 psi | 87% | 2963 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 82% | 55,709 psi | 89% | 2913 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,607 psi | 88% | 2881 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 56,347 psi | 90% | 2933 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 53,548 psi | 86% | 2835 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,940 psi | 86% | 2959 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 53,635 psi | 86% | 2884 fps | 99% |
| Somchem S365 | <<locked>> | 84% | 53,374 psi | 86% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,694 psi | 88% | 2933 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,244 psi | 87% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,346 psi | 87% | 2913 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 53,403 psi | 86% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 53,316 psi | 85% | 2930 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 52,939 psi | 85% | 3005 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 94% | 53,142 psi | 85% | 2992 fps | 99.3% |
| Vihtavuori N568 | <<locked>> | 98% | 54,085 psi | 87% | 3058 fps | 98.8% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,911 psi | 88% | 3114 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,635 psi | 86% | 2841 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,912 psi | 90% | 2976 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,403 psi | 86% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,360 psi | 87% | 2927 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,565 psi | 60% | 2605 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,270 psi | 81% | 2854 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 38,870 psi | 62% | 2723 fps | 95.3% |
| ADI AR 2209 | <<locked>> | 80% | 41,945 psi | 67% | 2743 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 80% | 37,434 psi | 60% | 2677 fps | 96% |
| ADI AR 2217 | <<locked>> | 88% | 36,405 psi | 58% | 2651 fps | 96% |
| ADI AR 2225 | <<locked>> | 84% | 28,631 psi | 46% | 2484 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,428 psi | 78% | 2864 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,945 psi | 67% | 2736 fps | 98.4% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,782 psi | 61% | 2684 fps | 97.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,622 psi | 59% | 2638 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,415 psi | 50% | 2556 fps | 98.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,741 psi | 65% | 2792 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 44,440 psi | 71% | 2900 fps | 95.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 44,962 psi | 72% | 2776 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 35,070 psi | 56% | 2615 fps | 96.4% |
| Bofors RP30 | <<locked>> | 84% | 33,199 psi | 53% | 2598 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 37,782 psi | 61% | 2684 fps | 97.5% |
| Bofors RP7 | <<locked>> | 80% | 52,315 psi | 84% | 2861 fps | 100% |
| Hodgdon H1000 | <<locked>> | 84% | 34,606 psi | 55% | 2608 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 51,967 psi | 83% | 2913 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 40,059 psi | 64% | 2684 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,247 psi | 63% | 2664 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,585 psi | 73% | 2740 fps | 100% |
| Hodgdon Retumbo | 54.2 gr | 80% | 30,661 psi | 49% | 2579 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 52,330 psi | 84% | 2949 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,007 psi | 45% | 1667 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,732 psi | 77% | 2795 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 47,819 psi | 77% | 2802 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,423 psi | 66% | 2680 fps | 96.8% |
| IMR 7828 SSC | <<locked>> | 80% | 36,187 psi | 58% | 2657 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 92% | 33,939 psi | 54% | 2638 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 51,343 psi | 82% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,516 psi | 79% | 2825 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,285 psi | 52% | 2484 fps | 98% |
| Norma 204 | <<locked>> | 80% | 48,269 psi | 77% | 2844 fps | 99.3% |
| Norma 217 | <<locked>> | 88% | 29,544 psi | 47% | 2536 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 39,914 psi | 64% | 2756 fps | 99.1% |
| Norma URP | <<locked>> | 80% | 49,124 psi | 79% | 2841 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,708 psi | 57% | 2661 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 48,182 psi | 77% | 2848 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,734 psi | 51% | 2533 fps | 96.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,572 psi | 46% | 1703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,546 psi | 81% | 2881 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,863 psi | 78% | 2904 fps | 100% |
| ReloadSwiss RS 76 | 58 gr | 80% | 29,617 psi | 47% | 2543 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,885 psi | 62% | 2772 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 43,250 psi | 69% | 2723 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 80% | 41,350 psi | 66% | 2723 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 80% | 52,315 psi | 84% | 2861 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,343 psi | 82% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,516 psi | 79% | 2825 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,024 psi | 80% | 2779 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,017 psi | 66% | 2720 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 43,816 psi | 70% | 2710 fps | 97.2% |
| Somchem S365 | <<locked>> | 80% | 46,485 psi | 75% | 2792 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,785 psi | 67% | 2703 fps | 99.1% |
| Vihtavuori N160 | <<locked>> | 80% | 50,647 psi | 81% | 2835 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,274 psi | 58% | 2575 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 80% | 49,966 psi | 80% | 2838 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,799 psi | 65% | 2713 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,929 psi | 64% | 2749 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 84% | 37,594 psi | 60% | 2680 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 90% | 40,306 psi | 65% | 2789 fps | 95.4% |
| Vihtavuori N570 | <<locked>> | 96% | 47,427 psi | 76% | 2976 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,893 psi | 80% | 2789 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 52,214 psi | 84% | 2917 fps | 100% |
| Winchester StaBALL HD | 55.7 gr | 80% | 33,344 psi | 53% | 2674 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,421 psi | 62% | 2635 fps | 97.6% |
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 76 powders for .264 Win. Mag. loaded with the .264 | 140gr | Hornady ECX. Vihtavuori N570 delivers the highest muzzle velocity at 3,114 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,114 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:8.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for .264 Win. Mag. with the .264 | 140gr | Hornady ECX they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-50, IMR 7977 Enduron, Lovex D100 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.