Load Specifications
Load data in caliber 6.5 x 68 R with .264 | 128gr | MRR Green Long Range 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 ReloadSwiss RS 80.
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% | 48,965 psi | 87% | 2920 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 50,894 psi | 90% | 3064 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 86% | 50,546 psi | 89% | 3005 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 88% | 48,602 psi | 86% | 3005 fps | 98.1% |
| ADI AR 2217 | <<locked>> | 98% | 50,053 psi | 88% | 3031 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,182 psi | 85% | 3054 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 50,734 psi | 90% | 3009 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 50,270 psi | 89% | 2995 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 88% | 49,008 psi | 87% | 3009 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 90% | 50,227 psi | 89% | 2986 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 49,821 psi | 88% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 50,169 psi | 89% | 3068 fps | 100% |
| Bofors RP15 | <<locked>> | 90% | 48,312 psi | 85% | 2992 fps | 98.9% |
| Bofors RP30 | <<locked>> | 96% | 49,516 psi | 88% | 3045 fps | 98.8% |
| Bofors RP5 | <<locked>> | 88% | 49,008 psi | 87% | 3009 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 94% | 48,211 psi | 85% | 2995 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 48,428 psi | 86% | 2943 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 50,850 psi | 90% | 2989 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 51,126 psi | 90% | 2933 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 48,733 psi | 86% | 3117 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 66% | 1942 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 50,256 psi | 89% | 2936 fps | 99.6% |
| IMR 4831 | <<locked>> | 82% | 50,256 psi | 89% | 2943 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 49,530 psi | 88% | 2930 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 90% | 50,038 psi | 88% | 3045 fps | 98.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,830 psi | 77% | 2953 fps | 97.5% |
| Lovex S071 | <<locked>> | 94% | 50,444 psi | 89% | 2946 fps | 100% |
| Norma 204 | <<locked>> | 82% | 50,749 psi | 90% | 2986 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 44,063 psi | 78% | 2982 fps | 99.3% |
| Norma MRP | <<locked>> | 86% | 48,559 psi | 86% | 3022 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 50,531 psi | 89% | 3064 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 82% | 50,589 psi | 89% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 49,182 psi | 87% | 2999 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,159 psi | 67% | 1985 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 48,762 psi | 86% | 3104 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 47,964 psi | 85% | 3048 fps | 97.3% |
| Rottweil R 904 | <<locked>> | 84% | 48,327 psi | 85% | 2917 fps | 98% |
| Rottweil R 905 | <<locked>> | 86% | 49,908 psi | 88% | 2986 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 49,516 psi | 88% | 2979 fps | 99.2% |
| Somchem S361 | <<locked>> | 84% | 49,487 psi | 87% | 2904 fps | 97.6% |
| Somchem S365 | <<locked>> | 82% | 49,066 psi | 87% | 2936 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 50,415 psi | 89% | 2959 fps | 99.6% |
| Vihtavuori N165 | <<locked>> | 90% | 50,053 psi | 88% | 2940 fps | 99.5% |
| Vihtavuori N555 | <<locked>> | 86% | 49,124 psi | 87% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 48,356 psi | 85% | 3015 fps | 97.6% |
| Vihtavuori N565 | <<locked>> | 92% | 48,791 psi | 86% | 3005 fps | 98% |
| Vihtavuori N568 | <<locked>> | 96% | 49,052 psi | 87% | 3058 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 90% | 48,124 psi | 85% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 49,966 psi | 88% | 2949 fps | 99.1% |
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% | 37,347 psi | 66% | 2687 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 84% | 44,208 psi | 78% | 2930 fps | 95.9% |
| ADI AR 2209 | <<locked>> | 80% | 41,292 psi | 73% | 2818 fps | 97.4% |
| ADI AR 2213 | <<locked>> | 82% | 39,523 psi | 70% | 2808 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 90% | 38,305 psi | 68% | 2776 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 86% | 30,327 psi | 54% | 2605 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,558 psi | 84% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,336 psi | 73% | 2815 fps | 97.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,246 psi | 66% | 2756 fps | 96.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,926 psi | 64% | 2713 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,140 psi | 55% | 2621 fps | 97.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,813 psi | 70% | 2867 fps | 99.8% |
| Bofors RP15 | <<locked>> | 80% | 34,664 psi | 61% | 2687 fps | 95.1% |
| Bofors RP30 | <<locked>> | 88% | 37,637 psi | 67% | 2792 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 37,246 psi | 66% | 2756 fps | 96.3% |
| Hodgdon H1000 | <<locked>> | 86% | 36,550 psi | 65% | 2733 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 82% | 42,250 psi | 75% | 2815 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 82% | 41,437 psi | 73% | 2799 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,788 psi | 79% | 2825 fps | 100% |
| Hodgdon Retumbo | 58.1 gr | 84% | 34,809 psi | 62% | 2779 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,905 psi | 49% | 1732 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,094 psi | 83% | 2877 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 46,992 psi | 83% | 2887 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,915 psi | 72% | 2753 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 82% | 38,087 psi | 67% | 2785 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 96% | 38,290 psi | 68% | 2828 fps | 95.7% |
| Lovex S071 | <<locked>> | 80% | 32,155 psi | 57% | 2556 fps | 97.1% |
| Norma 204 | <<locked>> | 80% | 47,442 psi | 84% | 2923 fps | 98.6% |
| Norma 217 | <<locked>> | 90% | 31,270 psi | 55% | 2661 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 39,175 psi | 69% | 2828 fps | 98.2% |
| Ramshot Grand | <<locked>> | 82% | 37,739 psi | 67% | 2792 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 47,355 psi | 84% | 2930 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 82% | 33,794 psi | 60% | 2664 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 51% | 1778 fps | 100% |
| ReloadSwiss RS 76 | 60.7 gr | 82% | 31,662 psi | 56% | 2677 fps | 95.8% |
| ReloadSwiss RS 80 | 68.6 gr | 92% | 41,176 psi | 73% | 2907 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 42,482 psi | 75% | 2795 fps | 96.7% |
| Rottweil R 905 | <<locked>> | 80% | 40,814 psi | 72% | 2802 fps | 97.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,466 psi | 72% | 2795 fps | 97.4% |
| Somchem S361 | <<locked>> | 80% | 43,352 psi | 77% | 2782 fps | 96.1% |
| Somchem S365 | <<locked>> | 80% | 45,745 psi | 81% | 2881 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,307 psi | 73% | 2779 fps | 98.3% |
| Vihtavuori N165 | <<locked>> | 80% | 35,882 psi | 63% | 2648 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 80% | 40,219 psi | 71% | 2792 fps | 100% |
| Vihtavuori N560 | <<locked>> | 82% | 42,003 psi | 74% | 2881 fps | 95.9% |
| Vihtavuori N565 | <<locked>> | 86% | 39,624 psi | 70% | 2812 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 92% | 42,453 psi | 75% | 2920 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,489 psi | 57% | 2746 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,884 psi | 67% | 2703 fps | 96.5% |
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 | 128gr | MRR Green Long Range. Hodgdon Retumbo delivers the highest muzzle velocity at 3,117 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,117 fps. ADI AR 2225 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 66–90 %, leaving at least 10 % headroom. The 128.0 gr projectile in 0.264" calls for a 1:8.5 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, ReloadSwiss RS 80 rank at the top here: for 6.5 x 68 R with the .264 | 128gr | MRR Green Long Range 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.