Load Specifications
Load data in caliber .264 Win. Mag. with .263 | 139gr | Prvi Partizan FMJ BT bullet and 61 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 80 and Vihtavuori N570.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 52,982 psi | 85% | 2897 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 55,463 psi | 89% | 3061 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 86% | 54,447 psi | 87% | 2986 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 56,275 psi | 90% | 3058 fps | 99.7% |
| ADI AR 2217 | <<locked>> | 98% | 54,360 psi | 87% | 3025 fps | 99.8% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 50,676 psi | 81% | 3061 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 52,620 psi | 84% | 3045 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 54,607 psi | 88% | 2982 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 54,592 psi | 88% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 54,012 psi | 87% | 2976 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 88% | 53,040 psi | 85% | 2995 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 90% | 54,520 psi | 87% | 2956 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 54,317 psi | 87% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 54,940 psi | 88% | 3045 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 55,825 psi | 90% | 3120 fps | 98% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 53,417 psi | 86% | 2956 fps | 97.6% |
| Bofors RP15 | <<locked>> | 92% | 55,840 psi | 90% | 3038 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 54,201 psi | 87% | 3041 fps | 99.8% |
| Bofors RP5 | <<locked>> | 88% | 53,040 psi | 85% | 2995 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 96% | 55,927 psi | 90% | 3048 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 55,724 psi | 89% | 2989 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 54,665 psi | 88% | 2972 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,824 psi | 88% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 53,185 psi | 85% | 3110 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 60% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 53,476 psi | 86% | 2904 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 53,824 psi | 86% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 56,318 psi | 90% | 2966 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 90% | 54,563 psi | 87% | 3038 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 48,385 psi | 78% | 2963 fps | 99.2% |
| Lovex S070 | <<locked>> | 82% | 55,637 psi | 89% | 2936 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 54,462 psi | 87% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 82% | 54,462 psi | 87% | 2963 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 48,950 psi | 78% | 2986 fps | 100% |
| Norma MRP | <<locked>> | 86% | 52,794 psi | 85% | 3009 fps | 100% |
| Norma URP | <<locked>> | 82% | 55,463 psi | 89% | 2949 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 55,506 psi | 89% | 3061 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 54,389 psi | 87% | 2959 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 53,650 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,493 psi | 62% | 1929 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 55,767 psi | 89% | 3022 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 53,867 psi | 86% | 3100 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 53,243 psi | 85% | 3061 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 86% | 55,013 psi | 88% | 2953 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 86% | 53,548 psi | 86% | 2963 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 82% | 55,637 psi | 89% | 2936 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 56,057 psi | 90% | 2884 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 53,156 psi | 85% | 2959 fps | 99.9% |
| Somchem S361 | <<locked>> | 84% | 52,852 psi | 85% | 2887 fps | 99% |
| Somchem S365 | <<locked>> | 82% | 52,982 psi | 85% | 2900 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 53,940 psi | 86% | 2933 fps | 100% |
| Vihtavuori N165 | <<locked>> | 90% | 53,853 psi | 86% | 2920 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 56,376 psi | 90% | 2992 fps | 96.5% |
| Vihtavuori N550 | <<locked>> | 82% | 56,072 psi | 90% | 2946 fps | 100% |
| Vihtavuori N555 | <<locked>> | 86% | 53,040 psi | 85% | 2933 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 56,246 psi | 90% | 3071 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 92% | 52,953 psi | 85% | 2999 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 96% | 54,099 psi | 87% | 3068 fps | 98.8% |
| Vihtavuori N570 | <<locked>> | 98% | 54,810 psi | 88% | 3123 fps | 97.5% |
| Winchester StaBALL HD | <<locked>> | 90% | 53,519 psi | 86% | 3045 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 53,780 psi | 86% | 2930 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% | 40,495 psi | 65% | 2674 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 80% | 41,684 psi | 67% | 2795 fps | 96.4% |
| ADI AR 2209 | <<locked>> | 80% | 44,498 psi | 71% | 2808 fps | 99% |
| ADI AR 2213 | <<locked>> | 80% | 39,798 psi | 64% | 2743 fps | 96.9% |
| ADI AR 2217 | <<locked>> | 84% | 34,011 psi | 55% | 2598 fps | 95.1% |
| ADI AR 2218 | <<locked>> | 98% | 47,108 psi | 76% | 2982 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 82% | 28,950 psi | 46% | 2500 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 44,846 psi | 72% | 2805 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 80% | 51,024 psi | 82% | 2917 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 44,425 psi | 71% | 2799 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 80% | 40,408 psi | 65% | 2749 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 39,204 psi | 63% | 2697 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,837 psi | 54% | 2628 fps | 99.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,961 psi | 70% | 2861 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 44,425 psi | 71% | 2907 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 44,353 psi | 71% | 2776 fps | 95.3% |
| Bofors RP15 | <<locked>> | 80% | 37,637 psi | 60% | 2687 fps | 97.4% |
| Bofors RP30 | <<locked>> | 82% | 33,576 psi | 54% | 2612 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 40,408 psi | 65% | 2749 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 82% | 34,577 psi | 55% | 2615 fps | 96.1% |
| Hodgdon H4831 | <<locked>> | 80% | 42,453 psi | 68% | 2746 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,640 psi | 67% | 2726 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 48,211 psi | 77% | 2792 fps | 100% |
| Hodgdon Retumbo | 56.2 gr | 80% | 33,025 psi | 53% | 2657 fps | 96.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,108 psi | 45% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 50,183 psi | 80% | 2851 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 50,430 psi | 81% | 2854 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,671 psi | 70% | 2740 fps | 97.5% |
| IMR 7828 SSC | <<locked>> | 80% | 38,435 psi | 62% | 2720 fps | 96.6% |
| IMR 8133 Enduron | <<locked>> | 90% | 34,345 psi | 55% | 2654 fps | 95.4% |
| Lovex S070 | <<locked>> | 80% | 52,243 psi | 84% | 2881 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,983 psi | 56% | 2552 fps | 98.8% |
| Norma 204 | <<locked>> | 80% | 50,749 psi | 81% | 2900 fps | 99.6% |
| Norma 217 | <<locked>> | 86% | 30,240 psi | 48% | 2559 fps | 96% |
| Norma MRP | <<locked>> | 80% | 42,670 psi | 68% | 2822 fps | 99.6% |
| Norma URP | <<locked>> | 80% | 51,982 psi | 83% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 38,232 psi | 61% | 2730 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 80% | 50,778 psi | 81% | 2904 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 34,360 psi | 55% | 2608 fps | 97.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,892 psi | 46% | 1726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,851 psi | 83% | 2963 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 32,039 psi | 51% | 2625 fps | 97.5% |
| ReloadSwiss RS 80 | 66.7 gr | 88% | 39,218 psi | 63% | 2785 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 45,455 psi | 73% | 2779 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 80% | 44,034 psi | 71% | 2789 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 52,243 psi | 84% | 2881 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 52,562 psi | 84% | 2831 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,685 psi | 70% | 2785 fps | 98.9% |
| Somchem S361 | <<locked>> | 80% | 46,224 psi | 74% | 2766 fps | 97.9% |
| Somchem S365 | <<locked>> | 80% | 49,530 psi | 79% | 2848 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 44,411 psi | 71% | 2766 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 80% | 38,754 psi | 62% | 2638 fps | 98.3% |
| Vihtavuori N170 | <<locked>> | 94% | 52,605 psi | 84% | 2930 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 52,605 psi | 84% | 2894 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 43,642 psi | 70% | 2772 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 42,511 psi | 68% | 2812 fps | 97.2% |
| Vihtavuori N565 | <<locked>> | 80% | 35,201 psi | 56% | 2628 fps | 95% |
| Vihtavuori N568 | <<locked>> | 88% | 40,553 psi | 65% | 2802 fps | 95.6% |
| Vihtavuori N570 | 68.5 gr | 94% | 47,485 psi | 76% | 2986 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 36,506 psi | 59% | 2746 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 40,857 psi | 66% | 2694 fps | 98.3% |
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 61 powders for .264 Win. Mag. loaded with the .263 | 139gr | Prvi Partizan FMJ BT. Vihtavuori N570 delivers the highest muzzle velocity at 3,123 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,123 fps. ADI AR 2218 gives the best case fill at 100 %, and 61 of the 61 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 139.0 gr projectile in 0.263" 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 80, Vihtavuori N570 rank at the top here: for .264 Win. Mag. with the .263 | 139gr | Prvi Partizan FMJ BT 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.