Load Specifications
Load data in caliber 6.8 Western with .277 | 150gr | Speer Hot-Cor bullet and 83 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate High Country, Norma MRP and Vihtavuori N560.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 96% | 55,463 psi | 85% | 2871 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 57,232 psi | 88% | 2910 fps | 100% |
| Accurate High Country | <<locked>> | 94% | 56,985 psi | 88% | 3025 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 96% | 57,957 psi | 89% | 3028 fps | 98% |
| ADI AR 2208 | <<locked>> | 84% | 58,349 psi | 90% | 2867 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,943 psi | 89% | 2966 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 96% | 55,506 psi | 85% | 2966 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,340 psi | 71% | 2792 fps | 96.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,205 psi | 63% | 2753 fps | 98.4% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 58,015 psi | 89% | 2963 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 56,289 psi | 87% | 2844 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 58,030 psi | 89% | 2966 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 55,506 psi | 85% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 57,261 psi | 88% | 2953 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,245 psi | 85% | 2959 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 56,202 psi | 86% | 2933 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,967 psi | 80% | 2936 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 56,695 psi | 87% | 3028 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 98% | 57,566 psi | 89% | 2923 fps | 96% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,769 psi | 89% | 2999 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 57,174 psi | 88% | 2858 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,819 psi | 74% | 2867 fps | 97.6% |
| Bofors RP5 | <<locked>> | 96% | 55,245 psi | 85% | 2959 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 56,115 psi | 86% | 2854 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,198 psi | 79% | 2887 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 82% | 57,290 psi | 88% | 2881 fps | 100% |
| Hodgdon H414 | <<locked>> | 86% | 55,114 psi | 85% | 2907 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 58,102 psi | 89% | 2923 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 55,637 psi | 86% | 2907 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 96% | 58,189 psi | 90% | 2946 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 58,117 psi | 89% | 2884 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,894 psi | 78% | 2999 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 86% | 55,550 psi | 85% | 2946 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,970 psi | 57% | 1798 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,986 psi | 89% | 2851 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 57,725 psi | 89% | 2897 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,725 psi | 89% | 2884 fps | 99.9% |
| IMR 4831 | <<locked>> | 90% | 57,406 psi | 88% | 2900 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,811 psi | 87% | 2890 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 98% | 56,956 psi | 88% | 3002 fps | 98.7% |
| Lovex S062 | <<locked>> | 82% | 58,349 psi | 90% | 2844 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 58,117 psi | 89% | 2877 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,434 psi | 87% | 2877 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,953 psi | 81% | 2835 fps | 99.9% |
| Norma 204 | <<locked>> | 90% | 58,740 psi | 90% | 2953 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 36,666 psi | 56% | 2674 fps | 96.3% |
| Norma MRP | <<locked>> | 94% | 55,056 psi | 85% | 2986 fps | 99.8% |
| Norma URP | <<locked>> | 88% | 55,680 psi | 86% | 2897 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,943 psi | 89% | 3028 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 90% | 58,001 psi | 89% | 2953 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 56,028 psi | 86% | 2956 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 58% | 1837 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,942 psi | 88% | 2867 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,882 psi | 84% | 2917 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 57,000 psi | 88% | 2933 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 55,230 psi | 85% | 2959 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,242 psi | 79% | 2992 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 84% | 57,609 psi | 89% | 2861 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,434 psi | 85% | 2877 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 94% | 56,652 psi | 87% | 2940 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 86% | 56,115 psi | 86% | 2854 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 88% | 58,117 psi | 89% | 2877 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 58,349 psi | 90% | 2844 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,434 psi | 87% | 2877 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 55,332 psi | 85% | 2864 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 57,595 psi | 89% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,609 psi | 89% | 2831 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 56,202 psi | 86% | 2936 fps | 99.3% |
| Somchem S355 | <<locked>> | 84% | 57,232 psi | 88% | 2854 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 57,145 psi | 88% | 2871 fps | 98% |
| Somchem S365 | <<locked>> | 90% | 55,796 psi | 86% | 2897 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 57,348 psi | 88% | 2913 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 86% | 58,581 psi | 90% | 2825 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 57,537 psi | 89% | 2887 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,652 psi | 87% | 2890 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 56,463 psi | 87% | 2890 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 58,755 psi | 90% | 2963 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 55,027 psi | 85% | 2979 fps | 98% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,476 psi | 84% | 2953 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 57,087 psi | 88% | 2848 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,361 psi | 85% | 2913 fps | 99.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 57,595 psi | 89% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 57,508 psi | 88% | 2913 fps | 99.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 32,300 psi | 50% | 2428 fps | 96.1% |
| Accurate 4350 | <<locked>> | 80% | 43,482 psi | 67% | 2690 fps | 99.8% |
| Accurate High Country | 58.8 gr | 86% | 43,076 psi | 66% | 2772 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 90% | 46,833 psi | 72% | 2831 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 51,721 psi | 80% | 2769 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 39,015 psi | 60% | 2615 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 88% | 42,409 psi | 65% | 2720 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 98% | 43,352 psi | 67% | 2733 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 94% | 33,939 psi | 52% | 2569 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 39,160 psi | 60% | 2615 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,852 psi | 81% | 2795 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,829 psi | 64% | 2697 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,080 psi | 74% | 2815 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,783 psi | 60% | 2608 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,014 psi | 57% | 2608 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,082 psi | 48% | 2461 fps | 99% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,051 psi | 45% | 2418 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,721 psi | 52% | 2589 fps | 98.1% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,041 psi | 83% | 2864 fps | 95.1% |
| Bofors RP15 | <<locked>> | 88% | 39,262 psi | 60% | 2661 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 53,592 psi | 82% | 2808 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 39,073 psi | 60% | 2687 fps | 95% |
| Bofors RP5 | <<locked>> | 84% | 37,014 psi | 57% | 2608 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 46,688 psi | 72% | 2697 fps | 98.6% |
| Hodgdon H1000 | <<locked>> | 94% | 41,684 psi | 64% | 2700 fps | 96% |
| Hodgdon H380 | <<locked>> | 80% | 53,751 psi | 83% | 2828 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 45,223 psi | 70% | 2736 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 47,892 psi | 74% | 2753 fps | 98.2% |
| Hodgdon H4831 | <<locked>> | 88% | 45,397 psi | 70% | 2726 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,498 psi | 68% | 2710 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,349 psi | 61% | 2582 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,622 psi | 56% | 2674 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 44,396 psi | 68% | 2753 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,717 psi | 43% | 1608 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,404 psi | 84% | 2802 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,206 psi | 65% | 2628 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,935 psi | 74% | 2720 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 41,539 psi | 64% | 2638 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,280 psi | 68% | 2671 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 90% | 43,424 psi | 67% | 2753 fps | 95.7% |
| Lovex S062 | <<locked>> | 80% | 54,824 psi | 84% | 2792 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 45,571 psi | 70% | 2674 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 43,903 psi | 68% | 2661 fps | 98.6% |
| Lovex S071 | <<locked>> | 82% | 29,718 psi | 46% | 2362 fps | 95% |
| Norma 204 | <<locked>> | 80% | 41,814 psi | 64% | 2654 fps | 96.3% |
| Norma 217 | <<locked>> | 98% | 34,505 psi | 53% | 2615 fps | 95.3% |
| Norma MRP | 54.7 gr | 80% | 33,634 psi | 52% | 2552 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 42,917 psi | 66% | 2680 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 40,408 psi | 62% | 2700 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 41,582 psi | 64% | 2667 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 35,998 psi | 55% | 2579 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 43% | 1644 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 53,287 psi | 82% | 2812 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 51,010 psi | 78% | 2858 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,294 psi | 67% | 2707 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,756 psi | 64% | 2723 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,562 psi | 52% | 2585 fps | 95.2% |
| Rottweil R 903 | <<locked>> | 80% | 50,647 psi | 78% | 2759 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,134 psi | 66% | 2654 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 38,058 psi | 59% | 2595 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 46,688 psi | 72% | 2697 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,571 psi | 70% | 2674 fps | 99.5% |
| Shooters World Precision | <<locked>> | 80% | 54,824 psi | 84% | 2792 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,903 psi | 68% | 2661 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,692 psi | 80% | 2812 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,908 psi | 78% | 2641 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,657 psi | 69% | 2621 fps | 98.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,710 psi | 58% | 2589 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 50,459 psi | 78% | 2753 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,845 psi | 67% | 2641 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 39,784 psi | 61% | 2638 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,245 psi | 56% | 2523 fps | 95.8% |
| Vihtavuori N150 | <<locked>> | 80% | 48,356 psi | 74% | 2680 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,193 psi | 68% | 2671 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,882 psi | 55% | 2510 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 43,685 psi | 67% | 2677 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 34,795 psi | 54% | 2536 fps | 98.9% |
| Vihtavuori N560 | 60.2 gr | 88% | 44,730 psi | 69% | 2792 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 94% | 44,498 psi | 68% | 2772 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,221 psi | 66% | 2638 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,469 psi | 70% | 2740 fps | 98.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,485 psi | 42% | 2457 fps | 98.8% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,884 psi | 58% | 2559 fps | 95.3% |
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 83 powders for 6.8 Western loaded with the .277 | 150gr | Speer Hot-Cor. Winchester StaBALL HD delivers the highest muzzle velocity at 3,074 fps; across all powders the maximum-charge window runs from 1,798 fps to 3,074 fps. ADI AR 2217 gives the best case fill at 100 %, and 83 of the 83 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.277" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Accurate High Country, Norma MRP, Vihtavuori N560 rank at the top here: for 6.8 Western with the .277 | 150gr | Speer Hot-Cor 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.