Load Specifications
Load data in caliber 6.5 x 68 R with .264 | 135gr | Peregrine Glider GRM bullet and 55 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% | 48,008 psi | 85% | 2838 fps | 100% |
| Accurate High Country | <<locked>> | 86% | 49,545 psi | 88% | 2986 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 88% | 50,459 psi | 89% | 2992 fps | 97.9% |
| ADI AR 2209 | <<locked>> | 86% | 50,169 psi | 89% | 2930 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 88% | 48,124 psi | 85% | 2933 fps | 98.4% |
| ADI AR 2217 | <<locked>> | 98% | 49,603 psi | 88% | 2956 fps | 99% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,529 psi | 84% | 2979 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 50,415 psi | 89% | 2930 fps | 99.4% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 50,415 psi | 89% | 2930 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 82% | 50,430 psi | 89% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 49,879 psi | 88% | 2920 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 88% | 48,414 psi | 86% | 2930 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 90% | 49,850 psi | 88% | 2910 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 49,197 psi | 87% | 2969 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 49,371 psi | 87% | 2982 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 50,009 psi | 88% | 2900 fps | 96.1% |
| Bofors RP15 | <<locked>> | 92% | 50,937 psi | 90% | 2976 fps | 99.5% |
| Bofors RP30 | <<locked>> | 96% | 48,907 psi | 86% | 2969 fps | 99% |
| Bofors RP5 | <<locked>> | 88% | 48,414 psi | 86% | 2930 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 96% | 51,010 psi | 90% | 2982 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 86% | 47,877 psi | 85% | 2867 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 50,372 psi | 89% | 2913 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 50,502 psi | 89% | 2851 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 48,182 psi | 85% | 3038 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,289 psi | 66% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 49,705 psi | 88% | 2858 fps | 99.7% |
| IMR 4831 | <<locked>> | 82% | 49,734 psi | 88% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 49,153 psi | 87% | 2858 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 90% | 49,588 psi | 88% | 2969 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 43,004 psi | 76% | 2877 fps | 97.7% |
| Lovex S071 | <<locked>> | 94% | 49,516 psi | 88% | 2864 fps | 100% |
| Norma 204 | <<locked>> | 82% | 50,299 psi | 89% | 2910 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 43,453 psi | 77% | 2907 fps | 99.4% |
| Norma MRP | <<locked>> | 86% | 47,935 psi | 85% | 2946 fps | 99.8% |
| Norma URP | <<locked>> | 82% | 51,184 psi | 90% | 2907 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 50,198 psi | 89% | 2992 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 82% | 50,111 psi | 89% | 2910 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 48,399 psi | 86% | 2920 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,058 psi | 67% | 1926 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 51,111 psi | 90% | 2976 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 48,124 psi | 85% | 3025 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 51,140 psi | 90% | 3045 fps | 98.3% |
| Rottweil R 904 | <<locked>> | 84% | 48,051 psi | 85% | 2844 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 86% | 49,400 psi | 87% | 2910 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 49,008 psi | 87% | 2904 fps | 99.3% |
| Somchem S361 | <<locked>> | 84% | 48,936 psi | 87% | 2831 fps | 97.9% |
| Somchem S365 | <<locked>> | 82% | 48,341 psi | 85% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 49,661 psi | 88% | 2877 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 90% | 49,501 psi | 88% | 2864 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 86% | 48,399 psi | 86% | 2881 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 47,819 psi | 85% | 2940 fps | 97.9% |
| Vihtavuori N565 | <<locked>> | 92% | 47,993 psi | 85% | 2927 fps | 98.2% |
| Vihtavuori N568 | <<locked>> | 96% | 48,385 psi | 86% | 2982 fps | 97.2% |
| Winchester StaBALL HD | <<locked>> | 90% | 47,456 psi | 84% | 2979 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 49,400 psi | 87% | 2874 fps | 99.3% |
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% | 36,492 psi | 65% | 2608 fps | 98.7% |
| Accurate High Country | <<locked>> | 80% | 39,914 psi | 71% | 2785 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 82% | 40,538 psi | 72% | 2789 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 40,872 psi | 72% | 2749 fps | 97.7% |
| ADI AR 2213 | <<locked>> | 82% | 38,972 psi | 69% | 2736 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 90% | 37,695 psi | 67% | 2703 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 86% | 29,675 psi | 52% | 2533 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,278 psi | 73% | 2749 fps | 97.8% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,278 psi | 73% | 2749 fps | 97.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,152 psi | 83% | 2874 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,872 psi | 72% | 2743 fps | 97.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,695 psi | 65% | 2684 fps | 96.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,288 psi | 62% | 2638 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,487 psi | 54% | 2552 fps | 97.7% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,160 psi | 69% | 2789 fps | 99.9% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,746 psi | 83% | 2835 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 34,026 psi | 60% | 2612 fps | 95.4% |
| Bofors RP30 | <<locked>> | 88% | 36,854 psi | 65% | 2717 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 36,695 psi | 65% | 2684 fps | 96.6% |
| Hodgdon H1000 | <<locked>> | 86% | 36,042 psi | 64% | 2667 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 80% | 38,841 psi | 69% | 2680 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 82% | 40,872 psi | 72% | 2726 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,179 psi | 78% | 2746 fps | 100% |
| Hodgdon Retumbo | 55.2 gr | 82% | 31,821 psi | 56% | 2631 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,963 psi | 49% | 1686 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,673 psi | 83% | 2802 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 46,369 psi | 82% | 2808 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,480 psi | 72% | 2684 fps | 96% |
| IMR 7828 SSC | <<locked>> | 82% | 37,637 psi | 67% | 2717 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 96% | 37,478 psi | 66% | 2753 fps | 95.9% |
| Lovex S071 | <<locked>> | 80% | 31,314 psi | 55% | 2480 fps | 97.2% |
| Norma 204 | <<locked>> | 80% | 46,891 psi | 83% | 2848 fps | 98.8% |
| Norma 217 | <<locked>> | 90% | 30,603 psi | 54% | 2589 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 38,522 psi | 68% | 2753 fps | 98.4% |
| Norma URP | <<locked>> | 80% | 47,950 psi | 85% | 2851 fps | 100% |
| Ramshot Grand | <<locked>> | 82% | 37,130 psi | 66% | 2717 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 46,775 psi | 83% | 2851 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 80% | 30,618 psi | 54% | 2523 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,500 psi | 50% | 1722 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,529 psi | 84% | 2913 fps | 100% |
| ReloadSwiss RS 76 | 59.1 gr | 82% | 30,879 psi | 55% | 2602 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 40,335 psi | 71% | 2828 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 80% | 42,032 psi | 74% | 2723 fps | 97% |
| Rottweil R 905 | <<locked>> | 80% | 40,248 psi | 71% | 2726 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,914 psi | 71% | 2720 fps | 97.6% |
| Somchem S361 | <<locked>> | 80% | 42,815 psi | 76% | 2713 fps | 96.5% |
| Somchem S365 | <<locked>> | 80% | 45,179 psi | 80% | 2805 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,712 psi | 72% | 2707 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 80% | 35,288 psi | 62% | 2579 fps | 96.7% |
| Vihtavuori N555 | <<locked>> | 80% | 39,421 psi | 70% | 2713 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,566 psi | 68% | 2743 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 86% | 38,986 psi | 69% | 2740 fps | 95.8% |
| Vihtavuori N568 | 64.6 gr | 92% | 41,814 psi | 74% | 2848 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,778 psi | 56% | 2664 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,202 psi | 66% | 2631 fps | 96.7% |
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 55 powders for 6.5 x 68 R loaded with the .264 | 135gr | Peregrine Glider GRM. ReloadSwiss RS 80 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,045 fps. ADI AR 2225 gives the best case fill at 100 %, and 55 of the 55 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 135.0 gr projectile in 0.264" calls for a 1:7.5 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, Vihtavuori N568 rank at the top here: for 6.5 x 68 R with the .264 | 135gr | Peregrine Glider GRM 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.