Load Specifications
Load data in caliber .264 Win. Mag. with .264 | 140gr | Hornady GMX bullet and 67 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 ReloadSwiss RS 80.
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% | 55,187 psi | 88% | 2927 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 55,811 psi | 89% | 2946 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 54,012 psi | 87% | 3031 fps | 99% |
| ADI AR 2209 | <<locked>> | 86% | 53,447 psi | 86% | 2963 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 55,288 psi | 89% | 3035 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 53,316 psi | 85% | 3002 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,647 psi | 80% | 3031 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,488 psi | 83% | 3022 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 53,606 psi | 86% | 2959 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 53,577 psi | 86% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 52,997 psi | 85% | 2953 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 55,521 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 53,330 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 53,185 psi | 85% | 3005 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 53,621 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,346 psi | 87% | 3087 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 55,956 psi | 90% | 2992 fps | 98.1% |
| Bofors RP15 | <<locked>> | 92% | 54,708 psi | 88% | 3015 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 52,692 psi | 84% | 3009 fps | 99.7% |
| Bofors RP5 | <<locked>> | 90% | 55,521 psi | 89% | 3028 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 54,911 psi | 88% | 3025 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 54,462 psi | 87% | 2963 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 53,432 psi | 86% | 2946 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 53,766 psi | 86% | 2874 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 55,840 psi | 90% | 3146 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,507 psi | 60% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 56,043 psi | 90% | 2940 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 56,231 psi | 90% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 55,187 psi | 88% | 2943 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 90% | 53,229 psi | 85% | 3012 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,862 psi | 75% | 2927 fps | 99% |
| Lovex S065 | <<locked>> | 82% | 56,202 psi | 90% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 54,520 psi | 87% | 2913 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 53,040 psi | 85% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 82% | 53,476 psi | 86% | 2943 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 47,630 psi | 76% | 2956 fps | 100% |
| Norma MRP | <<locked>> | 88% | 55,245 psi | 89% | 3041 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,346 psi | 87% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,085 psi | 87% | 3031 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 82% | 53,374 psi | 86% | 2940 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 52,460 psi | 84% | 2959 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,276 psi | 61% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 56,043 psi | 90% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,708 psi | 88% | 2999 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 52,373 psi | 84% | 3071 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 55,840 psi | 90% | 3097 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 54,070 psi | 87% | 2930 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 88% | 56,115 psi | 90% | 2995 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 56,202 psi | 90% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,520 psi | 87% | 2913 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 55,013 psi | 88% | 2864 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 55,709 psi | 89% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 55,521 psi | 89% | 2923 fps | 99.3% |
| Somchem S365 | <<locked>> | 84% | 55,434 psi | 89% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 56,333 psi | 90% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 55,912 psi | 90% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 56,434 psi | 90% | 2953 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 55,216 psi | 89% | 2969 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 82% | 54,940 psi | 88% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 55,274 psi | 89% | 2959 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 54,897 psi | 88% | 3041 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 94% | 55,230 psi | 89% | 3028 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 52,576 psi | 84% | 3035 fps | 98.6% |
| Vihtavuori N570 | <<locked>> | 98% | 53,621 psi | 86% | 3094 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 55,245 psi | 89% | 2871 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 90% | 52,185 psi | 84% | 3018 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 56,434 psi | 90% | 2963 fps | 100% |
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% | 39,044 psi | 63% | 2641 fps | 99.6% |
| Accurate 4350 | <<locked>> | 80% | 52,098 psi | 84% | 2890 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 40,480 psi | 65% | 2766 fps | 96% |
| ADI AR 2209 | <<locked>> | 80% | 43,482 psi | 70% | 2782 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 38,798 psi | 62% | 2713 fps | 96.7% |
| ADI AR 2217 | <<locked>> | 86% | 35,172 psi | 56% | 2625 fps | 95.7% |
| ADI AR 2218 | <<locked>> | 98% | 46,064 psi | 74% | 2953 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 27,862 psi | 45% | 2461 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 43,845 psi | 70% | 2782 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,256 psi | 81% | 2900 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,424 psi | 70% | 2772 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,262 psi | 63% | 2720 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,043 psi | 61% | 2667 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,721 psi | 52% | 2595 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 42,612 psi | 68% | 2831 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 46,630 psi | 75% | 2946 fps | 96% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,540 psi | 70% | 2756 fps | 95.1% |
| Bofors RP15 | <<locked>> | 80% | 36,521 psi | 59% | 2654 fps | 97.1% |
| Bofors RP30 | <<locked>> | 84% | 34,766 psi | 56% | 2641 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 39,262 psi | 63% | 2720 fps | 98% |
| Hodgdon H1000 | <<locked>> | 82% | 33,533 psi | 54% | 2585 fps | 95.6% |
| Hodgdon H4831 | <<locked>> | 80% | 41,466 psi | 66% | 2720 fps | 96.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 40,625 psi | 65% | 2703 fps | 96.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,094 psi | 76% | 2769 fps | 100% |
| Hodgdon Retumbo | 56 gr | 80% | 31,923 psi | 51% | 2621 fps | 96.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 45% | 1680 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,226 psi | 79% | 2828 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 49,240 psi | 79% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 42,757 psi | 69% | 2713 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 37,391 psi | 60% | 2690 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 92% | 35,563 psi | 57% | 2684 fps | 96% |
| Lovex S065 | <<locked>> | 80% | 52,707 psi | 85% | 2858 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 51,082 psi | 82% | 2858 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,576 psi | 54% | 2516 fps | 98.5% |
| Norma 204 | <<locked>> | 80% | 49,763 psi | 80% | 2877 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 28,935 psi | 46% | 2516 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 41,452 psi | 66% | 2792 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 50,850 psi | 82% | 2874 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,115 psi | 60% | 2697 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 80% | 49,734 psi | 80% | 2881 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 33,156 psi | 53% | 2575 fps | 97% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 46% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 52,431 psi | 84% | 2917 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 50,778 psi | 81% | 2940 fps | 100% |
| ReloadSwiss RS 76 | 59.9 gr | 80% | 30,879 psi | 50% | 2589 fps | 96.9% |
| ReloadSwiss RS 80 | 66.5 gr | 88% | 37,884 psi | 61% | 2749 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 44,469 psi | 71% | 2756 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 80% | 42,902 psi | 69% | 2762 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 52,707 psi | 85% | 2858 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 51,082 psi | 82% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 51,488 psi | 83% | 2808 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 42,554 psi | 68% | 2756 fps | 98.8% |
| Somchem S361 | <<locked>> | 80% | 45,223 psi | 73% | 2743 fps | 97.7% |
| Somchem S365 | <<locked>> | 80% | 48,283 psi | 77% | 2825 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,236 psi | 69% | 2740 fps | 99.4% |
| Vihtavuori N160 | <<locked>> | 80% | 52,286 psi | 84% | 2864 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,637 psi | 60% | 2612 fps | 98.1% |
| Vihtavuori N170 | <<locked>> | 94% | 51,445 psi | 82% | 2904 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 51,503 psi | 83% | 2871 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 42,264 psi | 68% | 2743 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 41,394 psi | 66% | 2785 fps | 97% |
| Vihtavuori N565 | <<locked>> | 82% | 36,521 psi | 59% | 2657 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 39,349 psi | 63% | 2769 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 94% | 46,267 psi | 74% | 2956 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 51,532 psi | 83% | 2815 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,157 psi | 56% | 2713 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,798 psi | 64% | 2667 fps | 98.1% |
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 67 powders for .264 Win. Mag. loaded with the .264 | 140gr | Hornady GMX. Hodgdon Retumbo delivers the highest muzzle velocity at 3,146 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,146 fps. ADI AR 2218 gives the best case fill at 100 %, and 67 of the 67 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 1:10.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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, ReloadSwiss RS 80 rank at the top here: for .264 Win. Mag. with the .264 | 140gr | Hornady GMX 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.