Load Specifications
Load data in caliber 6.5 x 68 R with .264 | 140gr | Sierra GameKing bullet and 49 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>> | 86% | 50,502 psi | 89% | 2831 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 48,443 psi | 86% | 2920 fps | 99% |
| Accurate MAGPRO | <<locked>> | 84% | 49,095 psi | 87% | 2920 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 82% | 48,501 psi | 86% | 2858 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 86% | 49,792 psi | 88% | 2923 fps | 99.1% |
| ADI AR 2217 | <<locked>> | 94% | 48,515 psi | 86% | 2897 fps | 99.3% |
| ADI AR 2218 | <<locked>> | 98% | 48,254 psi | 85% | 2986 fps | 96.2% |
| ADI AR 2225 | <<locked>> | 98% | 50,444 psi | 89% | 2982 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 48,776 psi | 86% | 2854 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 48,776 psi | 86% | 2854 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 82% | 48,312 psi | 85% | 2848 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 86% | 50,386 psi | 89% | 2923 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 48,921 psi | 86% | 2844 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 48,399 psi | 86% | 2907 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 48,428 psi | 86% | 2913 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 49,168 psi | 87% | 2976 fps | 96.6% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 50,865 psi | 90% | 2887 fps | 97.1% |
| Bofors RP15 | <<locked>> | 88% | 49,937 psi | 88% | 2913 fps | 99.7% |
| Bofors RP30 | <<locked>> | 92% | 48,385 psi | 86% | 2910 fps | 99.3% |
| Bofors RP5 | <<locked>> | 86% | 50,386 psi | 89% | 2923 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 92% | 49,647 psi | 88% | 2920 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 84% | 49,414 psi | 87% | 2858 fps | 98.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 48,486 psi | 86% | 2841 fps | 98.4% |
| Hodgdon Retumbo | <<locked>> | 92% | 50,749 psi | 90% | 3038 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,695 psi | 67% | 1873 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 50,444 psi | 89% | 2844 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 86% | 48,298 psi | 85% | 2900 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 49,443 psi | 87% | 2953 fps | 99.4% |
| Lovex S071 | <<locked>> | 90% | 49,081 psi | 87% | 2808 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 50,125 psi | 89% | 2976 fps | 100% |
| Norma MRP | <<locked>> | 84% | 50,169 psi | 89% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 48,878 psi | 86% | 2923 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 90% | 51,082 psi | 90% | 2917 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,522 psi | 68% | 1916 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 51,082 psi | 90% | 3028 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 50,531 psi | 89% | 2986 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 82% | 49,371 psi | 87% | 2831 fps | 99% |
| Rottweil R 905 | <<locked>> | 84% | 51,068 psi | 90% | 2894 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 50,691 psi | 90% | 2890 fps | 99.8% |
| Somchem S361 | <<locked>> | 82% | 50,256 psi | 89% | 2818 fps | 98.7% |
| Somchem S385 | <<locked>> | 82% | 48,269 psi | 85% | 2812 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 48,153 psi | 85% | 2799 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 84% | 50,633 psi | 90% | 2867 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 49,792 psi | 88% | 2933 fps | 98.8% |
| Vihtavuori N565 | <<locked>> | 90% | 50,560 psi | 89% | 2930 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 92% | 47,979 psi | 85% | 2927 fps | 97.7% |
| Vihtavuori N570 | <<locked>> | 94% | 48,805 psi | 86% | 2982 fps | 96.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 51,126 psi | 90% | 2976 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 51,184 psi | 90% | 2864 fps | 99.8% |
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% | 41,321 psi | 73% | 2667 fps | 99.8% |
| Accurate High Country | <<locked>> | 80% | 45,063 psi | 80% | 2851 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 80% | 42,569 psi | 75% | 2792 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 80% | 45,339 psi | 80% | 2799 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 40,582 psi | 72% | 2736 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 34,519 psi | 61% | 2589 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 96% | 44,889 psi | 79% | 2910 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 27,688 psi | 49% | 2434 fps | 95.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,687 psi | 81% | 2799 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 45,687 psi | 81% | 2799 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,266 psi | 80% | 2792 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,234 psi | 73% | 2743 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,089 psi | 71% | 2687 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 34,577 psi | 61% | 2621 fps | 99.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 44,947 psi | 79% | 2854 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 45,643 psi | 81% | 2904 fps | 95.6% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 45,005 psi | 80% | 2769 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 38,450 psi | 68% | 2677 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 34,403 psi | 61% | 2608 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 41,234 psi | 73% | 2743 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 32,793 psi | 58% | 2543 fps | 95.2% |
| Hodgdon H4831 | <<locked>> | 80% | 43,047 psi | 76% | 2733 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 80% | 42,438 psi | 75% | 2720 fps | 97.1% |
| Hodgdon Retumbo | 56.5 gr | 80% | 33,736 psi | 60% | 2651 fps | 97% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,181 psi | 50% | 1673 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,425 psi | 79% | 2730 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 80% | 39,262 psi | 69% | 2713 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 35,157 psi | 62% | 2648 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 35,563 psi | 63% | 2543 fps | 99% |
| Norma 217 | <<locked>> | 84% | 28,921 psi | 51% | 2493 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 43,569 psi | 77% | 2815 fps | 99.7% |
| Ramshot Grand | <<locked>> | 80% | 39,088 psi | 69% | 2723 fps | 97.2% |
| Ramshot Magnum | <<locked>> | 80% | 35,172 psi | 62% | 2602 fps | 97.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,964 psi | 51% | 1716 fps | 100% |
| ReloadSwiss RS 76 | 60.4 gr | 80% | 32,764 psi | 58% | 2621 fps | 97.8% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 37,275 psi | 66% | 2713 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 46,238 psi | 82% | 2772 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 44,686 psi | 79% | 2776 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 44,338 psi | 78% | 2772 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 46,992 psi | 83% | 2759 fps | 98.1% |
| Somchem S385 | <<locked>> | 80% | 45,252 psi | 80% | 2756 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 80% | 39,508 psi | 70% | 2631 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 44,585 psi | 79% | 2766 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 43,366 psi | 77% | 2805 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 35,984 psi | 64% | 2621 fps | 95.3% |
| Vihtavuori N568 | 64.8 gr | 88% | 41,495 psi | 73% | 2795 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 92% | 45,368 psi | 80% | 2913 fps | 95.1% |
| Winchester StaBALL HD | <<locked>> | 80% | 37,565 psi | 66% | 2740 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 41,655 psi | 74% | 2684 fps | 98.5% |
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 49 powders for 6.5 x 68 R loaded with the .264 | 140gr | Sierra GameKing. Hodgdon Retumbo delivers the highest muzzle velocity at 3,038 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,038 fps. Hodgdon TrailBoss gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (390 MPa), the top charges use 67–90 %, 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. Hodgdon TrailBoss, IMR 8133 Enduron, Norma 217 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 | 140gr | Sierra GameKing 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.