Load Specifications
Load data in caliber 6.5 x 68 with .264 | 140gr | Speer Grand Slam 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 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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Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 88% | 56,913 psi | 89% | 2940 fps | 100% |
| Accurate High Country | <<locked>> | 84% | 55,114 psi | 86% | 3048 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 86% | 56,028 psi | 88% | 3054 fps | 99.4% |
| ADI AR 2209 | <<locked>> | 84% | 54,404 psi | 85% | 2972 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 56,550 psi | 89% | 3048 fps | 99.9% |
| ADI AR 2217 | <<locked>> | 96% | 55,361 psi | 87% | 3025 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 55,521 psi | 87% | 3143 fps | 98.5% |
| ADI AR 2225 | <<locked>> | 98% | 54,027 psi | 85% | 3048 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 54,810 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 57,609 psi | 90% | 3018 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 56,985 psi | 89% | 3041 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 55,201 psi | 87% | 2946 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 55,390 psi | 87% | 3022 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 55,709 psi | 87% | 3035 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 57,363 psi | 90% | 3123 fps | 98.6% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 52,663 psi | 83% | 3038 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 57,014 psi | 89% | 3005 fps | 98.6% |
| Bofors RP15 | <<locked>> | 90% | 56,434 psi | 88% | 3031 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 55,317 psi | 87% | 3041 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 56,985 psi | 89% | 3041 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 56,695 psi | 89% | 3045 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 55,811 psi | 87% | 2982 fps | 99.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 54,592 psi | 86% | 2959 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 54,868 psi | 86% | 2877 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 54,636 psi | 86% | 3114 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,753 psi | 59% | 1896 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 56,826 psi | 89% | 2946 fps | 100% |
| IMR 4831 | <<locked>> | 82% | 57,508 psi | 90% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 56,115 psi | 88% | 2956 fps | 99.6% |
| IMR 7828 SSC | <<locked>> | 88% | 55,042 psi | 86% | 3031 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 53,127 psi | 83% | 3025 fps | 99.8% |
| Lovex S071 | <<locked>> | 92% | 55,172 psi | 86% | 2913 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 54,331 psi | 85% | 3048 fps | 100% |
| Norma MRP | <<locked>> | 86% | 57,188 psi | 90% | 3058 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 56,289 psi | 88% | 3054 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 54,650 psi | 86% | 2982 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,769 psi | 61% | 1942 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 55,245 psi | 87% | 3100 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 54,346 psi | 85% | 3061 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 84% | 55,085 psi | 86% | 2943 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 57,624 psi | 90% | 3012 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 57,232 psi | 90% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 56,347 psi | 88% | 2933 fps | 99.6% |
| Somchem S365 | <<locked>> | 82% | 57,029 psi | 89% | 2940 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 54,114 psi | 85% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 54,070 psi | 85% | 2910 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 56,898 psi | 89% | 2992 fps | 97% |
| Vihtavuori N555 | <<locked>> | 86% | 57,145 psi | 90% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 56,637 psi | 89% | 3064 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 92% | 57,479 psi | 90% | 3054 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 94% | 55,201 psi | 87% | 3068 fps | 99.2% |
| Vihtavuori N570 | <<locked>> | 96% | 56,260 psi | 88% | 3127 fps | 98.1% |
| Winchester StaBALL HD | <<locked>> | 88% | 55,013 psi | 86% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 57,682 psi | 90% | 2976 fps | 100% |
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% | 43,613 psi | 68% | 2720 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 47,921 psi | 75% | 2917 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 80% | 45,179 psi | 71% | 2854 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 80% | 47,703 psi | 75% | 2854 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 80% | 42,975 psi | 67% | 2799 fps | 98.1% |
| ADI AR 2217 | <<locked>> | 82% | 34,200 psi | 54% | 2592 fps | 95.6% |
| ADI AR 2218 | <<locked>> | 94% | 44,599 psi | 70% | 2920 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 80% | 29,312 psi | 46% | 2497 fps | 96.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 47,993 psi | 75% | 2854 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 80% | 47,543 psi | 75% | 2848 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 43,729 psi | 69% | 2805 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 42,380 psi | 66% | 2736 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 36,753 psi | 58% | 2680 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 47,993 psi | 75% | 2910 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 45,643 psi | 72% | 2910 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 96% | 45,324 psi | 71% | 2897 fps | 95.2% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 44,208 psi | 69% | 2769 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 40,712 psi | 64% | 2740 fps | 98.5% |
| Bofors RP30 | <<locked>> | 80% | 34,243 psi | 54% | 2608 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 43,729 psi | 69% | 2805 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 80% | 34,795 psi | 55% | 2608 fps | 96.6% |
| Hodgdon H4831 | <<locked>> | 80% | 45,397 psi | 71% | 2792 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 44,773 psi | 70% | 2779 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 51,503 psi | 81% | 2828 fps | 100% |
| Hodgdon Retumbo | 59.4 gr | 80% | 35,839 psi | 56% | 2720 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,326 psi | 44% | 1696 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 53,287 psi | 84% | 2890 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 53,867 psi | 84% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 46,441 psi | 73% | 2785 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 80% | 41,727 psi | 65% | 2782 fps | 97.9% |
| IMR 8133 Enduron | <<locked>> | 86% | 33,025 psi | 52% | 2595 fps | 95.1% |
| Lovex S071 | <<locked>> | 80% | 37,666 psi | 59% | 2598 fps | 99.5% |
| Norma 217 | <<locked>> | 82% | 29,008 psi | 45% | 2500 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 46,398 psi | 73% | 2877 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 41,829 psi | 66% | 2795 fps | 98.3% |
| Ramshot Magnum | <<locked>> | 80% | 37,623 psi | 59% | 2667 fps | 98.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,109 psi | 46% | 1739 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 35,085 psi | 55% | 2697 fps | 98.9% |
| ReloadSwiss RS 80 | 67.3 gr | 84% | 37,231 psi | 58% | 2717 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 48,501 psi | 76% | 2828 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 80% | 47,297 psi | 74% | 2838 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 46,949 psi | 74% | 2835 fps | 99.6% |
| Somchem S361 | <<locked>> | 80% | 49,443 psi | 77% | 2818 fps | 98.8% |
| Somchem S365 | <<locked>> | 80% | 53,287 psi | 84% | 2887 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 47,718 psi | 75% | 2812 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 80% | 41,597 psi | 65% | 2687 fps | 99.1% |
| Vihtavuori N170 | <<locked>> | 90% | 49,705 psi | 78% | 2867 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 47,152 psi | 74% | 2818 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 46,064 psi | 72% | 2871 fps | 98.3% |
| Vihtavuori N565 | <<locked>> | 80% | 38,261 psi | 60% | 2684 fps | 96.5% |
| Vihtavuori N568 | <<locked>> | 84% | 38,580 psi | 60% | 2733 fps | 95.2% |
| Vihtavuori N570 | 69.4 gr | 90% | 45,411 psi | 71% | 2920 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 80% | 40,654 psi | 64% | 2799 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,947 psi | 69% | 2743 fps | 99.1% |
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 54 powders for 6.5 x 68 loaded with the .264 | 140gr | Speer Grand Slam. ADI AR 2218 delivers the highest muzzle velocity at 3,143 fps; across all powders the maximum-charge window runs from 1,896 fps to 3,143 fps. ADI AR 2218 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 (440 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.264" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, 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 80, Vihtavuori N570 rank at the top here: for 6.5 x 68 with the .264 | 140gr | Speer Grand Slam 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.