Load Specifications
Load data in caliber .264 Win. Mag. with .263 | 123gr | Prvi Partizan SP bullet and 70 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>> | 92% | 56,275 psi | 90% | 3110 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 53,243 psi | 85% | 3081 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 54,911 psi | 88% | 3212 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 88% | 54,230 psi | 87% | 3146 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 92% | 55,898 psi | 90% | 3215 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,925 psi | 86% | 3173 fps | 99.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,530 psi | 78% | 3133 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,389 psi | 87% | 3143 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,317 psi | 87% | 3143 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,780 psi | 86% | 3133 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,130 psi | 90% | 3209 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,056 psi | 87% | 3120 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 53,563 psi | 86% | 3186 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,128 psi | 87% | 3209 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,795 psi | 86% | 3107 fps | 96.5% |
| Bofors RP15 | <<locked>> | 94% | 55,317 psi | 89% | 3196 fps | 99.7% |
| Bofors RP30 | <<locked>> | 98% | 53,388 psi | 86% | 3189 fps | 99.2% |
| Bofors RP5 | <<locked>> | 92% | 56,130 psi | 90% | 3209 fps | 99.8% |
| Bofors RP7 | <<locked>> | 82% | 55,230 psi | 89% | 3084 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 98% | 55,724 psi | 89% | 3205 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 82% | 54,926 psi | 88% | 3140 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 55,608 psi | 89% | 3146 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,592 psi | 88% | 3130 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,607 psi | 88% | 3061 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,014 psi | 90% | 3327 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,361 psi | 89% | 3176 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 60% | 2001 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 53,476 psi | 86% | 3068 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 56,391 psi | 90% | 3107 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,795 psi | 86% | 3077 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,333 psi | 90% | 3127 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 92% | 54,027 psi | 87% | 3192 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,874 psi | 70% | 3025 fps | 97.4% |
| Lovex S065 | <<locked>> | 82% | 54,012 psi | 87% | 3051 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,651 psi | 89% | 3100 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 53,940 psi | 86% | 3074 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,418 psi | 87% | 3127 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 44,324 psi | 71% | 3054 fps | 99.2% |
| Norma MRP | <<locked>> | 90% | 56,260 psi | 90% | 3232 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,259 psi | 89% | 3120 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,824 psi | 88% | 3215 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 54,186 psi | 87% | 3123 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,142 psi | 85% | 3136 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,130 psi | 61% | 2047 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 53,301 psi | 85% | 3104 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,666 psi | 89% | 3196 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,142 psi | 85% | 3258 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,304 psi | 90% | 3274 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 88% | 55,085 psi | 88% | 3110 fps | 99% |
| Rottweil R 905 | <<locked>> | 88% | 53,534 psi | 86% | 3123 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 55,230 psi | 89% | 3084 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,012 psi | 87% | 3051 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,651 psi | 89% | 3100 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 53,040 psi | 85% | 2999 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,127 psi | 85% | 3120 fps | 99.5% |
| Somchem S361 | <<locked>> | 86% | 53,098 psi | 85% | 3041 fps | 98.2% |
| Somchem S365 | <<locked>> | 86% | 56,289 psi | 90% | 3127 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 53,867 psi | 86% | 3091 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 82% | 53,301 psi | 85% | 3054 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 53,635 psi | 86% | 3074 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 84% | 56,289 psi | 90% | 3117 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,043 psi | 90% | 3150 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,898 psi | 90% | 3228 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 96% | 56,086 psi | 90% | 3209 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 98% | 53,156 psi | 85% | 3209 fps | 97.7% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,940 psi | 86% | 3264 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 52,779 psi | 85% | 3005 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,926 psi | 88% | 3140 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,405 psi | 90% | 3264 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 53,606 psi | 86% | 3087 fps | 99.5% |
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% | 37,405 psi | 60% | 2753 fps | 98.5% |
| Accurate 4350 | <<locked>> | 80% | 49,792 psi | 80% | 3022 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 44,454 psi | 71% | 3005 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 41,365 psi | 66% | 2894 fps | 97.3% |
| ADI AR 2213 | <<locked>> | 82% | 39,653 psi | 64% | 2881 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 90% | 38,522 psi | 62% | 2848 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 86% | 30,443 psi | 49% | 2671 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,800 psi | 67% | 2894 fps | 97.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,514 psi | 76% | 3028 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,408 psi | 66% | 2887 fps | 97.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,246 psi | 60% | 2822 fps | 96.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,056 psi | 58% | 2782 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,198 psi | 50% | 2690 fps | 97.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,030 psi | 64% | 2940 fps | 99.8% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,343 psi | 81% | 3041 fps | 95.6% |
| Bofors RP15 | <<locked>> | 82% | 37,159 psi | 60% | 2818 fps | 95.9% |
| Bofors RP30 | <<locked>> | 88% | 37,739 psi | 61% | 2861 fps | 95.5% |
| Bofors RP5 | <<locked>> | 80% | 37,246 psi | 60% | 2822 fps | 96.1% |
| Bofors RP7 | <<locked>> | 80% | 51,895 psi | 83% | 3028 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 86% | 36,637 psi | 59% | 2802 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 51,256 psi | 82% | 3077 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 82% | 42,337 psi | 68% | 2890 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,553 psi | 67% | 2871 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,976 psi | 72% | 2904 fps | 100% |
| Hodgdon Retumbo | 60.3 gr | 84% | 34,853 psi | 56% | 2844 fps | 95.8% |
| Hodgdon Superformance | <<locked>> | 80% | 51,372 psi | 82% | 3107 fps | 99.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 45% | 1788 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,166 psi | 76% | 2953 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 80% | 53,011 psi | 85% | 3048 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 47,079 psi | 75% | 2963 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,017 psi | 66% | 2825 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 84% | 40,828 psi | 65% | 2923 fps | 96% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,493 psi | 62% | 2900 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,749 psi | 81% | 2995 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,110 psi | 79% | 2986 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 32,213 psi | 52% | 2625 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 47,572 psi | 76% | 2999 fps | 98.5% |
| Norma 217 | <<locked>> | 92% | 33,678 psi | 54% | 2795 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 39,276 psi | 63% | 2900 fps | 98.1% |
| Norma URP | <<locked>> | 80% | 48,573 psi | 78% | 3009 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,956 psi | 61% | 2864 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 47,514 psi | 76% | 3009 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 33,939 psi | 54% | 2733 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,587 psi | 46% | 1834 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,734 psi | 80% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,964 psi | 77% | 3068 fps | 100% |
| ReloadSwiss RS 76 | 63 gr | 82% | 31,734 psi | 51% | 2743 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,524 psi | 67% | 2982 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 42,583 psi | 68% | 2867 fps | 96.5% |
| Rottweil R 905 | <<locked>> | 80% | 40,872 psi | 66% | 2874 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 80% | 51,895 psi | 83% | 3028 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,749 psi | 81% | 2995 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,110 psi | 79% | 2986 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,559 psi | 79% | 2940 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,553 psi | 65% | 2867 fps | 97.2% |
| Somchem S361 | <<locked>> | 80% | 43,352 psi | 70% | 2854 fps | 96% |
| Somchem S365 | <<locked>> | 80% | 45,847 psi | 74% | 2959 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,321 psi | 66% | 2851 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 80% | 49,966 psi | 80% | 2999 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,911 psi | 58% | 2717 fps | 96.3% |
| Vihtavuori N550 | <<locked>> | 80% | 49,443 psi | 79% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,335 psi | 65% | 2867 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 42,177 psi | 68% | 2959 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 86% | 39,871 psi | 64% | 2884 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 94% | 45,992 psi | 74% | 3068 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 98% | 50,140 psi | 80% | 3189 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,342 psi | 79% | 2953 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,503 psi | 83% | 3081 fps | 99.9% |
| Winchester StaBALL HD | 59 gr | 80% | 32,619 psi | 52% | 2815 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,869 psi | 61% | 2769 fps | 96.3% |
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 70 powders for .264 Win. Mag. loaded with the .263 | 123gr | Prvi Partizan SP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,327 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 123.0 gr projectile in 0.263" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Hodgdon TrailBoss 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 .263 | 123gr | Prvi Partizan SP 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.