Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:150 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Caliber:6.5 x 68 R load data
Case Length (l3):2.657"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:83 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:25.6"
Max. allowed Pressure:56,565 psi
Recommended Twist Rate:1:8.0
Load data in caliber 6.5 x 68 R with .264 | 150gr | Sierra MatchKing bullet and 99 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 ADI AR 2218.
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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 25.6"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 51,082 psi | 90% | 2749 fps | 100% |
| Accurate 3100 | <<locked>> | 84% | 48,066 psi | 85% | 2700 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 49,023 psi | 87% | 2838 fps | 99.4% |
| Accurate High Country | <<locked>> | 82% | 49,124 psi | 87% | 2838 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 84% | 49,922 psi | 88% | 2844 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 84% | 50,009 psi | 88% | 2848 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 82% | 49,008 psi | 87% | 2772 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 82% | 49,110 psi | 87% | 2776 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 86% | 50,705 psi | 90% | 2844 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 86% | 50,850 psi | 90% | 2848 fps | 99.5% |
| ADI AR 2217 | <<locked>> | 94% | 49,284 psi | 87% | 2822 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 94% | 49,168 psi | 87% | 2818 fps | 99.6% |
| ADI AR 2218 | <<locked>> | 98% | 48,965 psi | 87% | 2913 fps | 97.1% |
| ADI AR 2218 | <<locked>> | 98% | 49,052 psi | 87% | 2917 fps | 97.2% |
| ADI AR 2225 | <<locked>> | 98% | 51,140 psi | 90% | 2900 fps | 100% |
| ADI AR 2225 | <<locked>> | 96% | 47,790 psi | 84% | 2844 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 49,443 psi | 87% | 2776 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 48,834 psi | 86% | 2766 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 82% | 48,950 psi | 87% | 2769 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 47,892 psi | 85% | 2782 fps | 99.8% |
| Alliant Reloder-22 | <<locked>> | 84% | 48,008 psi | 85% | 2785 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 86% | 49,661 psi | 88% | 2759 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 86% | 49,763 psi | 88% | 2762 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 49,269 psi | 87% | 2825 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 90% | 49,400 psi | 87% | 2828 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 49,255 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 82% | 49,414 psi | 87% | 2835 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 49,995 psi | 88% | 2904 fps | 97.4% |
| Alliant Reloder-33 | <<locked>> | 96% | 50,096 psi | 89% | 2904 fps | 97.4% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 49,284 psi | 87% | 2884 fps | 96.7% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 49,385 psi | 87% | 2887 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 48,399 psi | 86% | 2749 fps | 97.1% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 48,486 psi | 86% | 2753 fps | 97.1% |
| Bofors RP15 | <<locked>> | 88% | 50,575 psi | 89% | 2831 fps | 99.9% |
| Bofors RP15 | <<locked>> | 88% | 50,691 psi | 90% | 2831 fps | 99.9% |
| Bofors RP30 | <<locked>> | 92% | 49,153 psi | 87% | 2835 fps | 99.6% |
| Bofors RP30 | <<locked>> | 92% | 49,255 psi | 87% | 2838 fps | 99.6% |
| Bofors RP5 | <<locked>> | 84% | 47,892 psi | 85% | 2782 fps | 99.8% |
| Bofors RP5 | <<locked>> | 84% | 48,008 psi | 85% | 2785 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 92% | 50,415 psi | 89% | 2841 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 92% | 50,546 psi | 89% | 2844 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 84% | 50,154 psi | 89% | 2779 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 50,285 psi | 89% | 2782 fps | 99.1% |
| Hodgdon H4831 SC | <<locked>> | 84% | 49,211 psi | 87% | 2762 fps | 98.9% |
| Hodgdon H4831 SC | <<locked>> | 84% | 49,298 psi | 87% | 2762 fps | 98.9% |
| Hodgdon Retumbo | <<locked>> | 90% | 48,356 psi | 85% | 2904 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 48,443 psi | 86% | 2904 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,724 psi | 67% | 1801 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,652 psi | 67% | 1798 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 50,995 psi | 90% | 2762 fps | 99.2% |
| IMR 4955 Enduron | <<locked>> | 84% | 51,126 psi | 90% | 2766 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 86% | 49,168 psi | 87% | 2825 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 86% | 49,269 psi | 87% | 2828 fps | 99.4% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,140 psi | 89% | 2877 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,270 psi | 89% | 2877 fps | 99.7% |
| Lovex S071 | <<locked>> | 90% | 49,588 psi | 88% | 2726 fps | 100% |
| Lovex S071 | <<locked>> | 90% | 49,705 psi | 88% | 2726 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 51,184 psi | 90% | 2900 fps | 100% |
| Norma 217 | <<locked>> | 98% | 47,761 psi | 84% | 2844 fps | 100% |
| Norma MRP | <<locked>> | 84% | 51,140 psi | 90% | 2858 fps | 100% |
| Norma MRP | <<locked>> | 84% | 51,010 psi | 90% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 49,806 psi | 88% | 2844 fps | 99.7% |
| Ramshot Grand | <<locked>> | 86% | 49,647 psi | 88% | 2841 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 88% | 48,211 psi | 85% | 2779 fps | 100% |
| Ramshot Magnum | <<locked>> | 88% | 48,298 psi | 85% | 2779 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,595 psi | 68% | 1841 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,740 psi | 68% | 1844 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 48,298 psi | 85% | 2887 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 48,428 psi | 86% | 2890 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 47,674 psi | 84% | 2848 fps | 98.6% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 47,805 psi | 85% | 2851 fps | 98.7% |
| Rottweil R 904 | <<locked>> | 82% | 50,038 psi | 88% | 2749 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 82% | 49,908 psi | 88% | 2746 fps | 99.4% |
| Rottweil R 905 | <<locked>> | 82% | 48,530 psi | 86% | 2756 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 82% | 48,660 psi | 86% | 2759 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 48,167 psi | 85% | 2753 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 48,298 psi | 85% | 2756 fps | 99.8% |
| Somchem S361 | <<locked>> | 82% | 51,024 psi | 90% | 2740 fps | 99.1% |
| Somchem S361 | <<locked>> | 82% | 50,923 psi | 90% | 2740 fps | 99.1% |
| Somchem S385 | <<locked>> | 82% | 48,863 psi | 86% | 2730 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 48,979 psi | 87% | 2733 fps | 100% |
| Vihtavuori N165 | <<locked>> | 86% | 48,675 psi | 86% | 2720 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 86% | 48,776 psi | 86% | 2720 fps | 99.9% |
| Vihtavuori N170 | <<locked>> | 92% | 50,850 psi | 90% | 2785 fps | 95.9% |
| Vihtavuori N170 | <<locked>> | 92% | 50,966 psi | 90% | 2789 fps | 95.9% |
| Vihtavuori N555 | <<locked>> | 82% | 48,356 psi | 85% | 2736 fps | 100% |
| Vihtavuori N555 | <<locked>> | 82% | 48,254 psi | 85% | 2736 fps | 100% |
| Vihtavuori N560 | <<locked>> | 84% | 50,763 psi | 90% | 2858 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 84% | 50,618 psi | 89% | 2854 fps | 99.3% |
| Vihtavuori N565 | <<locked>> | 88% | 47,993 psi | 85% | 2792 fps | 99.1% |
| Vihtavuori N565 | <<locked>> | 88% | 48,124 psi | 85% | 2795 fps | 99.1% |
| Vihtavuori N568 | <<locked>> | 92% | 48,588 psi | 86% | 2851 fps | 98.3% |
| Vihtavuori N568 | <<locked>> | 92% | 48,704 psi | 86% | 2854 fps | 98.4% |
| Vihtavuori N570 | <<locked>> | 94% | 49,545 psi | 88% | 2910 fps | 96.9% |
| Vihtavuori N570 | <<locked>> | 94% | 49,647 psi | 88% | 2913 fps | 97% |
| Winchester StaBALL HD | <<locked>> | 86% | 48,196 psi | 85% | 2838 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 86% | 48,370 psi | 86% | 2838 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 84% | 48,414 psi | 86% | 2723 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 48,544 psi | 86% | 2726 fps | 99.7% |
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% | 41,959 psi | 74% | 2592 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 42,047 psi | 74% | 2595 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 45,759 psi | 81% | 2776 fps | 98.9% |
| Accurate High Country | <<locked>> | 80% | 45,861 psi | 81% | 2776 fps | 99% |
| Accurate MAGPRO | <<locked>> | 80% | 43,279 psi | 77% | 2720 fps | 97.4% |
| Accurate MAGPRO | <<locked>> | 80% | 43,410 psi | 77% | 2723 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 80% | 45,963 psi | 81% | 2717 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 80% | 46,064 psi | 81% | 2720 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 80% | 41,234 psi | 73% | 2664 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 41,350 psi | 73% | 2664 fps | 98% |
| ADI AR 2217 | <<locked>> | 82% | 32,793 psi | 58% | 2464 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 82% | 32,895 psi | 58% | 2467 fps | 95.4% |
| ADI AR 2218 | 69.2 gr | 96% | 45,426 psi | 80% | 2841 fps | 96% |
| ADI AR 2218 | 69.2 gr | 96% | 45,527 psi | 80% | 2841 fps | 96% |
| ADI AR 2225 | <<locked>> | 80% | 28,137 psi | 50% | 2379 fps | 96.4% |
| ADI AR 2225 | <<locked>> | 80% | 28,210 psi | 50% | 2379 fps | 96.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 46,441 psi | 82% | 2720 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 80% | 45,890 psi | 81% | 2713 fps | 99.5% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,006 psi | 81% | 2717 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 41,930 psi | 74% | 2671 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,047 psi | 74% | 2674 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,669 psi | 72% | 2608 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 40,799 psi | 72% | 2612 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,143 psi | 62% | 2549 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,244 psi | 62% | 2552 fps | 99.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,658 psi | 81% | 2772 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 45,759 psi | 81% | 2776 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 92% | 43,163 psi | 76% | 2769 fps | 95.5% |
| Alliant Reloder-33 | <<locked>> | 92% | 43,265 psi | 76% | 2772 fps | 95.5% |
| Alliant Reloder-50 | <<locked>> | 98% | 45,861 psi | 81% | 2822 fps | 95.8% |
| Alliant Reloder-50 | <<locked>> | 98% | 45,963 psi | 81% | 2825 fps | 95.8% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 42,815 psi | 76% | 2638 fps | 95.5% |
| Baschieri & Pellagri 109 | <<locked>> | 82% | 42,728 psi | 76% | 2638 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 39,030 psi | 69% | 2608 fps | 98.3% |
| Bofors RP15 | <<locked>> | 80% | 39,131 psi | 69% | 2608 fps | 98.4% |
| Bofors RP30 | <<locked>> | 80% | 32,677 psi | 58% | 2484 fps | 95.6% |
| Bofors RP30 | <<locked>> | 80% | 32,793 psi | 58% | 2487 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 41,930 psi | 74% | 2671 fps | 99% |
| Bofors RP5 | <<locked>> | 80% | 42,047 psi | 74% | 2674 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 80% | 33,330 psi | 59% | 2480 fps | 96.3% |
| Hodgdon H1000 | <<locked>> | 80% | 33,431 psi | 59% | 2484 fps | 96.3% |
| Hodgdon H4831 | <<locked>> | 80% | 43,714 psi | 77% | 2661 fps | 97.9% |
| Hodgdon H4831 | <<locked>> | 80% | 43,816 psi | 77% | 2661 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,062 psi | 76% | 2648 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,207 psi | 76% | 2651 fps | 97.8% |
| Hodgdon Retumbo | 54.5 gr | 80% | 34,330 psi | 61% | 2592 fps | 98% |
| Hodgdon Retumbo | 54.5 gr | 80% | 34,432 psi | 61% | 2592 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,239 psi | 50% | 1608 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,398 psi | 50% | 1611 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 44,933 psi | 79% | 2651 fps | 98.3% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,049 psi | 80% | 2654 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 80% | 39,885 psi | 71% | 2641 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 80% | 40,001 psi | 71% | 2644 fps | 97.7% |
| IMR 8133 Enduron | <<locked>> | 88% | 33,489 psi | 59% | 2530 fps | 95.8% |
| IMR 8133 Enduron | <<locked>> | 88% | 33,605 psi | 59% | 2530 fps | 95.8% |
| Lovex S071 | <<locked>> | 80% | 36,114 psi | 64% | 2470 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 36,216 psi | 64% | 2474 fps | 99.4% |
| Norma 217 | <<locked>> | 82% | 27,543 psi | 49% | 2379 fps | 95.2% |
| Norma 217 | <<locked>> | 82% | 27,615 psi | 49% | 2382 fps | 95.3% |
| Norma MRP | <<locked>> | 80% | 44,266 psi | 78% | 2736 fps | 99.9% |
| Norma MRP | <<locked>> | 80% | 44,396 psi | 78% | 2740 fps | 99.9% |
| Ramshot Grand | <<locked>> | 80% | 39,914 psi | 71% | 2657 fps | 98.1% |
| Ramshot Grand | <<locked>> | 80% | 39,813 psi | 70% | 2654 fps | 98% |
| Ramshot Magnum | <<locked>> | 80% | 35,766 psi | 63% | 2536 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 80% | 35,897 psi | 63% | 2539 fps | 98.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,080 psi | 51% | 1647 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,037 psi | 51% | 1647 fps | 100% |
| ReloadSwiss RS 76 | 58.3 gr | 80% | 33,388 psi | 59% | 2566 fps | 98.6% |
| ReloadSwiss RS 76 | 58.3 gr | 80% | 33,504 psi | 59% | 2566 fps | 98.7% |
| ReloadSwiss RS 80 | <<locked>> | 86% | 38,000 psi | 67% | 2648 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 84% | 35,331 psi | 62% | 2585 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 46,775 psi | 83% | 2690 fps | 99% |
| Rottweil R 904 | <<locked>> | 80% | 46,905 psi | 83% | 2694 fps | 99% |
| Rottweil R 905 | <<locked>> | 80% | 45,513 psi | 80% | 2703 fps | 99.5% |
| Rottweil R 905 | <<locked>> | 80% | 45,397 psi | 80% | 2700 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,165 psi | 80% | 2697 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,063 psi | 80% | 2697 fps | 99.5% |
| Somchem S361 | <<locked>> | 80% | 47,659 psi | 84% | 2680 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 47,732 psi | 84% | 2684 fps | 98.7% |
| Somchem S385 | <<locked>> | 80% | 45,934 psi | 81% | 2677 fps | 99.8% |
| Somchem S385 | <<locked>> | 80% | 46,035 psi | 81% | 2680 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 80% | 40,059 psi | 71% | 2559 fps | 99% |
| Vihtavuori N165 | <<locked>> | 80% | 40,176 psi | 71% | 2562 fps | 99% |
| Vihtavuori N170 | <<locked>> | 90% | 47,587 psi | 84% | 2730 fps | 95% |
| Vihtavuori N170 | <<locked>> | 90% | 47,703 psi | 84% | 2730 fps | 95% |
| Vihtavuori N555 | <<locked>> | 80% | 45,165 psi | 80% | 2680 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 45,281 psi | 80% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,034 psi | 78% | 2733 fps | 98.2% |
| Vihtavuori N560 | <<locked>> | 80% | 44,121 psi | 78% | 2733 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 80% | 36,680 psi | 65% | 2556 fps | 96.3% |
| Vihtavuori N565 | <<locked>> | 80% | 36,622 psi | 65% | 2556 fps | 96.3% |
| Vihtavuori N568 | <<locked>> | 86% | 39,334 psi | 70% | 2664 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 86% | 39,465 psi | 70% | 2667 fps | 95.9% |
| Vihtavuori N570 | <<locked>> | 90% | 42,975 psi | 76% | 2779 fps | 95% |
| Vihtavuori N570 | <<locked>> | 90% | 43,091 psi | 76% | 2782 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,305 psi | 68% | 2664 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 38,435 psi | 68% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,148 psi | 75% | 2608 fps | 99% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,264 psi | 75% | 2612 fps | 99% |
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 99 powders for 6.5 x 68 R loaded with the .264 | 150gr | Sierra MatchKing. ADI AR 2218 delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,798 fps to 2,917 fps. Alliant Reloder-50 gives the best case fill at 100 %, and 99 of the 99 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 150.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Alliant Reloder-50, 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 76, ADI AR 2218 rank at the top here: for 6.5 x 68 R with the .264 | 150gr | Sierra MatchKing 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.