Load Specifications
Load data in caliber .264 Win. Mag. with .264 | 135gr | TWENTY-NINE ERTP bullet and 71 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 Accurate High Country.
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% | 56,217 psi | 90% | 2976 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 53,388 psi | 86% | 2946 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,041 psi | 87% | 3081 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 90% | 54,998 psi | 88% | 3084 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 88% | 54,201 psi | 87% | 3012 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 92% | 55,941 psi | 90% | 3081 fps | 99.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,824 psi | 86% | 3045 fps | 99.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,341 psi | 78% | 3005 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,433 psi | 87% | 3009 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,520 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,809 psi | 86% | 3002 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 56,188 psi | 90% | 3077 fps | 99.9% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,041 psi | 87% | 2989 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 53,359 psi | 86% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,070 psi | 87% | 3074 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,546 psi | 81% | 3061 fps | 96.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,519 psi | 86% | 2976 fps | 97% |
| Bofors RP15 | <<locked>> | 94% | 55,376 psi | 89% | 3064 fps | 99.9% |
| Bofors RP30 | <<locked>> | 98% | 53,142 psi | 85% | 3058 fps | 99.5% |
| Bofors RP5 | <<locked>> | 92% | 56,188 psi | 90% | 3077 fps | 99.9% |
| Bofors RP7 | <<locked>> | 82% | 55,259 psi | 89% | 2946 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 55,317 psi | 89% | 3068 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 82% | 54,810 psi | 88% | 3002 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 55,506 psi | 89% | 3015 fps | 99% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,418 psi | 87% | 2995 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,665 psi | 88% | 2927 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 56,086 psi | 90% | 3196 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 55,448 psi | 89% | 3045 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 60% | 1890 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 53,548 psi | 86% | 2933 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,867 psi | 86% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 56,246 psi | 90% | 2992 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 54,041 psi | 87% | 3061 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,888 psi | 70% | 2910 fps | 98% |
| Lovex S065 | <<locked>> | 82% | 53,983 psi | 87% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 55,651 psi | 89% | 2966 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 53,969 psi | 87% | 2946 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,607 psi | 88% | 2995 fps | 99.7% |
| Norma 217ᴾ | <<locked>> | 100% | 44,193 psi | 71% | 2936 fps | 99.6% |
| Norma MRP | <<locked>> | 90% | 56,115 psi | 90% | 3097 fps | 100% |
| Norma URP | <<locked>> | 84% | 55,317 psi | 89% | 2982 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,592 psi | 88% | 3077 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 54,360 psi | 87% | 2995 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,069 psi | 85% | 3009 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,319 psi | 61% | 1936 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 53,388 psi | 86% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 55,593 psi | 89% | 3058 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 52,895 psi | 85% | 3123 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 56,072 psi | 90% | 3143 fps | 99.1% |
| Rottweil R 904 | <<locked>> | 88% | 55,274 psi | 89% | 2982 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 88% | 53,505 psi | 86% | 2992 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 82% | 55,259 psi | 89% | 2946 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,983 psi | 87% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 55,651 psi | 89% | 2966 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,982 psi | 85% | 2867 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,098 psi | 85% | 2989 fps | 99.7% |
| Somchem S361 | <<locked>> | 86% | 52,997 psi | 85% | 2913 fps | 98.6% |
| Somchem S365 | <<locked>> | 86% | 56,362 psi | 90% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,012 psi | 87% | 2963 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 53,461 psi | 86% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 53,563 psi | 86% | 2943 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 84% | 56,362 psi | 90% | 2982 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 56,115 psi | 90% | 3015 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 55,796 psi | 89% | 3094 fps | 99.2% |
| Vihtavuori N565 | <<locked>> | 96% | 55,912 psi | 90% | 3077 fps | 99.4% |
| Vihtavuori N568 | <<locked>> | 98% | 52,895 psi | 85% | 3077 fps | 98.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,577 psi | 86% | 3133 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 52,852 psi | 85% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,071 psi | 88% | 3005 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 56,362 psi | 90% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 53,563 psi | 86% | 2956 fps | 99.7% |
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% | 37,579 psi | 60% | 2644 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 49,995 psi | 80% | 2894 fps | 100% |
| Accurate High Country | 55.8 gr | 80% | 40,785 psi | 65% | 2818 fps | 96.8% |
| Accurate MAGPRO | <<locked>> | 82% | 41,408 psi | 66% | 2822 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 41,510 psi | 67% | 2772 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 37,144 psi | 60% | 2703 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 88% | 36,013 psi | 58% | 2674 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 86% | 30,530 psi | 49% | 2572 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,959 psi | 67% | 2776 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,790 psi | 77% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,582 psi | 67% | 2769 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,507 psi | 60% | 2713 fps | 97% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,129 psi | 58% | 2667 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,299 psi | 50% | 2585 fps | 98.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,089 psi | 64% | 2825 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,036 psi | 75% | 2989 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,326 psi | 76% | 2858 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 34,838 psi | 56% | 2644 fps | 95.9% |
| Bofors RP30 | <<locked>> | 86% | 35,302 psi | 57% | 2690 fps | 95.4% |
| Bofors RP5 | <<locked>> | 80% | 37,507 psi | 60% | 2713 fps | 97% |
| Bofors RP7 | <<locked>> | 80% | 51,924 psi | 83% | 2894 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 34,287 psi | 55% | 2631 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 51,459 psi | 83% | 2949 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 39,508 psi | 63% | 2707 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,943 psi | 62% | 2694 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,947 psi | 72% | 2772 fps | 100% |
| Hodgdon Retumbo | 55.1 gr | 82% | 32,634 psi | 52% | 2671 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 51,503 psi | 83% | 2979 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 45% | 1690 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,311 psi | 76% | 2825 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 47,224 psi | 76% | 2835 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,133 psi | 66% | 2710 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 38,377 psi | 62% | 2746 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 94% | 35,955 psi | 58% | 2726 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 50,778 psi | 81% | 2864 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,226 psi | 79% | 2858 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 32,416 psi | 52% | 2520 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 47,543 psi | 76% | 2871 fps | 99% |
| Norma 217 | <<locked>> | 90% | 31,415 psi | 50% | 2628 fps | 96% |
| Norma MRP | <<locked>> | 80% | 39,349 psi | 63% | 2785 fps | 98.7% |
| Norma URP | <<locked>> | 80% | 48,704 psi | 78% | 2877 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,273 psi | 57% | 2680 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 47,485 psi | 76% | 2877 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,517 psi | 51% | 2559 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,747 psi | 46% | 1732 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,864 psi | 80% | 2913 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,225 psi | 77% | 2940 fps | 100% |
| ReloadSwiss RS 76 | 57.5 gr | 80% | 29,501 psi | 47% | 2572 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 41,292 psi | 66% | 2867 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 42,685 psi | 68% | 2749 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,031 psi | 66% | 2756 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 51,924 psi | 83% | 2894 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,778 psi | 81% | 2864 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,226 psi | 79% | 2858 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,734 psi | 80% | 2812 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,698 psi | 65% | 2749 fps | 97.9% |
| Somchem S361 | <<locked>> | 80% | 43,569 psi | 70% | 2740 fps | 96.7% |
| Somchem S365 | <<locked>> | 80% | 46,035 psi | 74% | 2831 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,568 psi | 67% | 2736 fps | 98.7% |
| Vihtavuori N160 | <<locked>> | 80% | 50,169 psi | 80% | 2867 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,085 psi | 58% | 2605 fps | 97.1% |
| Vihtavuori N550 | <<locked>> | 80% | 49,327 psi | 79% | 2871 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,408 psi | 65% | 2746 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,363 psi | 63% | 2772 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 84% | 37,260 psi | 60% | 2710 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 92% | 42,685 psi | 68% | 2881 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 98% | 50,096 psi | 80% | 3068 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,168 psi | 79% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,459 psi | 83% | 2949 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,663 psi | 52% | 2703 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,000 psi | 61% | 2657 fps | 97.1% |
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 71 powders for .264 Win. Mag. loaded with the .264 | 135gr | TWENTY-NINE ERTP. Hodgdon Retumbo delivers the highest muzzle velocity at 3,196 fps; across all powders the maximum-charge window runs from 1,890 fps to 3,196 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 135.0 gr projectile in 0.265" calls for a 1:7.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, 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, Accurate High Country rank at the top here: for .264 Win. Mag. with the .264 | 135gr | TWENTY-NINE ERTP 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.