Load Specifications
Load data in caliber 6.5 x 68 R with .264 | 128gr | TWENTY-NINE ERTP bullet and 54 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 Vihtavuori N568.
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: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 48,182 psi | 85% | 2904 fps | 99.9% |
| Accurate High Country | <<locked>> | 86% | 49,371 psi | 87% | 3045 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 88% | 50,125 psi | 89% | 3048 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 86% | 49,980 psi | 88% | 2992 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 88% | 47,863 psi | 85% | 2992 fps | 97.9% |
| ADI AR 2217 | <<locked>> | 98% | 49,356 psi | 87% | 3012 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,543 psi | 84% | 3041 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 50,241 psi | 89% | 2989 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 50,241 psi | 89% | 2989 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 82% | 50,067 psi | 89% | 2995 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 49,690 psi | 88% | 2982 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 88% | 48,225 psi | 85% | 2992 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 90% | 49,603 psi | 88% | 2976 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 49,023 psi | 87% | 3035 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 49,284 psi | 87% | 3051 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 50,908 psi | 90% | 3041 fps | 99.2% |
| Bofors RP30 | <<locked>> | 96% | 48,762 psi | 86% | 3028 fps | 98.6% |
| Bofors RP5 | <<locked>> | 88% | 48,225 psi | 85% | 2992 fps | 99% |
| Hodgdon H1000 | <<locked>> | 96% | 50,778 psi | 90% | 3045 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 88% | 51,082 psi | 90% | 2992 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 88% | 50,111 psi | 89% | 2972 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 50,473 psi | 89% | 2920 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 47,993 psi | 85% | 3100 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,333 psi | 66% | 1936 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 49,690 psi | 88% | 2923 fps | 99.6% |
| IMR 4831 | <<locked>> | 82% | 49,603 psi | 88% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 49,023 psi | 87% | 2917 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 90% | 49,472 psi | 87% | 3031 fps | 98.3% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,917 psi | 76% | 2936 fps | 97.2% |
| Lovex S071 | <<locked>> | 94% | 49,617 psi | 88% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 82% | 50,169 psi | 89% | 2972 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 43,308 psi | 77% | 2966 fps | 99.1% |
| Norma MRP | <<locked>> | 88% | 51,155 psi | 90% | 3071 fps | 99.9% |
| Norma URP | <<locked>> | 82% | 51,184 psi | 90% | 2976 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 49,719 psi | 88% | 3048 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 82% | 50,024 psi | 88% | 2979 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 48,167 psi | 85% | 2979 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 67% | 1978 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 50,778 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 48,080 psi | 85% | 3087 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 50,865 psi | 90% | 3107 fps | 97.9% |
| Rottweil R 904 | <<locked>> | 86% | 51,111 psi | 90% | 2963 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 86% | 49,081 psi | 87% | 2969 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 48,689 psi | 86% | 2963 fps | 99% |
| Somchem S361 | <<locked>> | 84% | 48,791 psi | 86% | 2890 fps | 97.4% |
| Somchem S365 | <<locked>> | 82% | 48,370 psi | 86% | 2927 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 49,647 psi | 88% | 2943 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 90% | 49,313 psi | 87% | 2927 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 86% | 48,254 psi | 85% | 2946 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 50,966 psi | 90% | 3064 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 94% | 51,184 psi | 90% | 3048 fps | 98.4% |
| Vihtavuori N568 | <<locked>> | 96% | 48,356 psi | 85% | 3045 fps | 96.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 50,937 psi | 90% | 3110 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 49,197 psi | 87% | 2933 fps | 99% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 36,796 psi | 65% | 2671 fps | 98.4% |
| Accurate High Country | <<locked>> | 80% | 40,016 psi | 71% | 2848 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 84% | 43,453 psi | 77% | 2913 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 40,712 psi | 72% | 2802 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 82% | 39,044 psi | 69% | 2795 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 90% | 37,681 psi | 67% | 2756 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 88% | 32,010 psi | 57% | 2657 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,147 psi | 73% | 2805 fps | 97.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,147 psi | 73% | 2805 fps | 97.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,876 psi | 83% | 2940 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,814 psi | 72% | 2799 fps | 97.2% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,695 psi | 65% | 2740 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,317 psi | 62% | 2697 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,661 psi | 54% | 2608 fps | 97.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,175 psi | 69% | 2851 fps | 99.8% |
| Bofors RP15 | <<locked>> | 82% | 36,593 psi | 65% | 2736 fps | 95.8% |
| Bofors RP30 | <<locked>> | 88% | 36,912 psi | 65% | 2772 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 36,695 psi | 65% | 2740 fps | 96% |
| Hodgdon H1000 | <<locked>> | 86% | 36,114 psi | 64% | 2720 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 82% | 41,524 psi | 73% | 2799 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,901 psi | 72% | 2785 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,121 psi | 78% | 2812 fps | 100% |
| Hodgdon Retumbo | 57.3 gr | 84% | 34,156 psi | 60% | 2756 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 49% | 1729 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,514 psi | 82% | 2864 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 46,601 psi | 82% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,437 psi | 71% | 2740 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 84% | 40,248 psi | 71% | 2835 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,623 psi | 67% | 2812 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 31,778 psi | 56% | 2546 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 46,862 psi | 83% | 2910 fps | 98.5% |
| Norma 217 | <<locked>> | 92% | 32,895 psi | 58% | 2710 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 38,595 psi | 68% | 2815 fps | 98% |
| Norma URP | <<locked>> | 80% | 47,819 psi | 85% | 2917 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,188 psi | 66% | 2776 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 46,775 psi | 83% | 2917 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 33,330 psi | 59% | 2651 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,689 psi | 51% | 1775 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,326 psi | 84% | 2979 fps | 100% |
| ReloadSwiss RS 76 | 59.9 gr | 82% | 31,111 psi | 55% | 2657 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 43,497 psi | 77% | 2959 fps | 95.9% |
| Rottweil R 904 | <<locked>> | 80% | 41,959 psi | 74% | 2782 fps | 96.4% |
| Rottweil R 905 | <<locked>> | 80% | 40,205 psi | 71% | 2785 fps | 97.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,871 psi | 70% | 2782 fps | 97.1% |
| Somchem S361 | <<locked>> | 80% | 42,902 psi | 76% | 2772 fps | 95.9% |
| Somchem S365 | <<locked>> | 80% | 45,063 psi | 80% | 2871 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,756 psi | 72% | 2766 fps | 98.1% |
| Vihtavuori N165 | <<locked>> | 80% | 35,360 psi | 63% | 2635 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 80% | 39,566 psi | 70% | 2779 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 41,423 psi | 73% | 2867 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 86% | 39,088 psi | 69% | 2795 fps | 95.2% |
| Vihtavuori N568 | 66.9 gr | 94% | 44,802 psi | 79% | 2969 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,778 psi | 56% | 2730 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,202 psi | 66% | 2687 fps | 96.2% |
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 54 powders for 6.5 x 68 R loaded with the .264 | 128gr | TWENTY-NINE ERTP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,110 fps; across all powders the maximum-charge window runs from 1,936 fps to 3,110 fps. ADI AR 2225 gives the best case fill at 100 %, and 54 of the 54 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 66–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.265" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Hodgdon TrailBoss, IMR 8133 Enduron 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, Vihtavuori N568 rank at the top here: for 6.5 x 68 R with the .264 | 128gr | 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.