Load Specifications
Load data in caliber 6.8 Western with .277 | 150gr | Swift A-Frame bullet and 84 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2700 | <<locked>> | 84% | 56,260 psi | 87% | 2808 fps | 99.6% |
| Accurate 3100 | <<locked>> | 98% | 58,494 psi | 90% | 2913 fps | 100% |
| Accurate 4064 | <<locked>> | 82% | 58,595 psi | 90% | 2825 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 56,565 psi | 87% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 58,030 psi | 89% | 3018 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 84% | 58,030 psi | 89% | 2861 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 57,116 psi | 88% | 2949 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 98% | 58,610 psi | 90% | 3012 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,745 psi | 70% | 2779 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,683 psi | 63% | 2740 fps | 98.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,666 psi | 86% | 2831 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 57,101 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 58,697 psi | 90% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 56,782 psi | 87% | 2943 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 58,204 psi | 90% | 3005 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,651 psi | 86% | 2927 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,256 psi | 79% | 2923 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,840 psi | 86% | 3012 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 57,058 psi | 88% | 2986 fps | 99.4% |
| Bofors RP3 | <<locked>> | 82% | 56,840 psi | 87% | 2851 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,108 psi | 72% | 2851 fps | 97.4% |
| Bofors RP5 | <<locked>> | 98% | 58,204 psi | 90% | 3005 fps | 99.5% |
| Bofors RP7 | <<locked>> | 86% | 55,622 psi | 86% | 2844 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,575 psi | 78% | 2874 fps | 98.3% |
| Hodgdon H380 | <<locked>> | 82% | 56,681 psi | 87% | 2871 fps | 100% |
| Hodgdon H414 | <<locked>> | 88% | 58,436 psi | 90% | 2956 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 86% | 57,566 psi | 89% | 2913 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 96% | 58,682 psi | 90% | 2949 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 96% | 57,493 psi | 88% | 2933 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 57,522 psi | 88% | 2874 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,227 psi | 77% | 2979 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 86% | 54,708 psi | 84% | 2933 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 57% | 1788 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 57,363 psi | 88% | 2841 fps | 100% |
| IMR 4350 | <<locked>> | 90% | 56,942 psi | 88% | 2881 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 86% | 57,188 psi | 88% | 2871 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 56,840 psi | 87% | 2890 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,101 psi | 86% | 2877 fps | 98% |
| IMR 7828 SSC | <<locked>> | 98% | 56,188 psi | 86% | 2986 fps | 98.5% |
| Lovex S062 | <<locked>> | 82% | 57,711 psi | 89% | 2831 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 57,580 psi | 89% | 2867 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 55,608 psi | 86% | 2861 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,185 psi | 80% | 2822 fps | 99.9% |
| Norma 203B | <<locked>> | 82% | 58,740 psi | 90% | 2890 fps | 100% |
| Norma 204 | <<locked>> | 90% | 58,262 psi | 90% | 2943 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 36,260 psi | 56% | 2661 fps | 96.1% |
| Norma MRP | <<locked>> | 96% | 58,407 psi | 90% | 3035 fps | 100% |
| Norma URP | <<locked>> | 90% | 58,494 psi | 90% | 2933 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 57,145 psi | 88% | 3012 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 90% | 57,508 psi | 88% | 2943 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 54,998 psi | 85% | 2940 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,739 psi | 58% | 1834 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 56,405 psi | 87% | 2858 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 58,015 psi | 89% | 2956 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 56,463 psi | 87% | 2923 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 58,784 psi | 90% | 3009 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,604 psi | 78% | 2979 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 84% | 56,956 psi | 88% | 2848 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 58,639 psi | 90% | 2923 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 94% | 56,101 psi | 86% | 2930 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 86% | 55,622 psi | 86% | 2844 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 57,580 psi | 89% | 2867 fps | 100% |
| Shooters World Precision | <<locked>> | 82% | 57,711 psi | 89% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 55,608 psi | 86% | 2861 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 58,320 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 56,971 psi | 88% | 2720 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 57,159 psi | 88% | 2822 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,651 psi | 86% | 2923 fps | 99.2% |
| Somchem S355 | <<locked>> | 84% | 56,623 psi | 87% | 2841 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 56,492 psi | 87% | 2858 fps | 97.8% |
| Somchem S365 | <<locked>> | 92% | 58,682 psi | 90% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 56,608 psi | 87% | 2900 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 58,001 psi | 89% | 2815 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 56,927 psi | 88% | 2877 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 55,941 psi | 86% | 2877 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 82% | 58,378 psi | 90% | 2808 fps | 100% |
| Vihtavuori N550 | <<locked>> | 88% | 55,970 psi | 86% | 2881 fps | 100% |
| Vihtavuori N555 | <<locked>> | 96% | 57,870 psi | 89% | 2949 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 58,276 psi | 90% | 3028 fps | 98.5% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,766 psi | 83% | 2936 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 56,376 psi | 87% | 2835 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 58,436 psi | 90% | 2956 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 56,623 psi | 87% | 3061 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 56,753 psi | 87% | 2897 fps | 99.2% |
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 2700 | <<locked>> | 80% | 49,400 psi | 76% | 2700 fps | 98.8% |
| Accurate 3100 | <<locked>> | 80% | 31,966 psi | 49% | 2418 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 54,998 psi | 85% | 2776 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 43,091 psi | 66% | 2677 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 94% | 50,270 psi | 77% | 2887 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,372 psi | 79% | 2759 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,537 psi | 59% | 2602 fps | 95.3% |
| ADI AR 2213 | <<locked>> | 88% | 42,003 psi | 65% | 2707 fps | 95% |
| ADI AR 2217 | <<locked>> | 98% | 43,004 psi | 66% | 2723 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 94% | 33,620 psi | 52% | 2556 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,228 psi | 80% | 2782 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,263 psi | 63% | 2684 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,442 psi | 73% | 2805 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,493 psi | 59% | 2602 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,059 psi | 60% | 2654 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,603 psi | 47% | 2448 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,589 psi | 47% | 2464 fps | 95.9% |
| Alliant Reloder-26 | 55.8 gr | 80% | 33,243 psi | 51% | 2575 fps | 97.9% |
| Bofors RP15 | <<locked>> | 88% | 38,566 psi | 59% | 2641 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 52,968 psi | 81% | 2799 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 41,307 psi | 64% | 2736 fps | 95.7% |
| Bofors RP5 | <<locked>> | 86% | 39,059 psi | 60% | 2654 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 46,108 psi | 71% | 2680 fps | 98.4% |
| Hodgdon H1000 | <<locked>> | 94% | 41,089 psi | 63% | 2684 fps | 95.6% |
| Hodgdon H380 | <<locked>> | 80% | 53,171 psi | 82% | 2815 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 44,686 psi | 69% | 2723 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,326 psi | 73% | 2740 fps | 98.1% |
| Hodgdon H4831 | <<locked>> | 88% | 44,962 psi | 69% | 2717 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 44,034 psi | 68% | 2697 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,972 psi | 60% | 2572 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 36,245 psi | 56% | 2661 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 43,903 psi | 68% | 2743 fps | 98.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 43% | 1601 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 54,056 psi | 83% | 2795 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,698 psi | 64% | 2615 fps | 97.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,630 psi | 73% | 2713 fps | 99% |
| IMR 4831 | <<locked>> | 80% | 41,002 psi | 63% | 2625 fps | 99.6% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,816 psi | 67% | 2657 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 90% | 42,975 psi | 66% | 2743 fps | 95.5% |
| Lovex S062 | <<locked>> | 80% | 54,447 psi | 84% | 2785 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 44,991 psi | 69% | 2657 fps | 99.4% |
| Lovex S070 | <<locked>> | 80% | 43,381 psi | 67% | 2648 fps | 98.5% |
| Lovex S071 | <<locked>> | 84% | 31,328 psi | 48% | 2402 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 55,100 psi | 85% | 2841 fps | 100% |
| Norma 204 | <<locked>> | 80% | 41,524 psi | 64% | 2648 fps | 96.2% |
| Norma 217 | <<locked>> | 98% | 33,968 psi | 52% | 2598 fps | 95% |
| Norma MRP | 54.1 gr | 80% | 33,156 psi | 51% | 2539 fps | 95% |
| Norma URP | <<locked>> | 80% | 42,337 psi | 65% | 2664 fps | 99.7% |
| Ramshot Grand | <<locked>> | 90% | 42,801 psi | 66% | 2749 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 41,234 psi | 63% | 2661 fps | 98.6% |
| Ramshot Magnum | <<locked>> | 88% | 35,433 psi | 55% | 2562 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 43% | 1640 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 52,997 psi | 82% | 2802 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,314 psi | 77% | 2848 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,931 psi | 66% | 2697 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,278 psi | 64% | 2713 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,433 psi | 55% | 2638 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,980 psi | 77% | 2746 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,612 psi | 66% | 2641 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 82% | 37,739 psi | 58% | 2582 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 46,108 psi | 71% | 2680 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,991 psi | 69% | 2657 fps | 99.4% |
| Shooters World Precision | <<locked>> | 80% | 54,447 psi | 84% | 2785 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 43,381 psi | 67% | 2648 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,358 psi | 79% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,560 psi | 78% | 2635 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,164 psi | 68% | 2608 fps | 98.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,405 psi | 58% | 2579 fps | 95.2% |
| Somchem S355 | <<locked>> | 80% | 49,864 psi | 77% | 2740 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,441 psi | 71% | 2687 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 39,160 psi | 60% | 2625 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,781 psi | 55% | 2510 fps | 95.6% |
| Vihtavuori N150 | <<locked>> | 80% | 47,790 psi | 74% | 2667 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,845 psi | 67% | 2664 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 35,433 psi | 55% | 2497 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 54,882 psi | 84% | 2762 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 43,178 psi | 66% | 2664 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 34,418 psi | 53% | 2526 fps | 98.8% |
| Vihtavuori N560 | 59.5 gr | 88% | 44,048 psi | 68% | 2772 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 94% | 43,845 psi | 67% | 2759 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,714 psi | 66% | 2625 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,904 psi | 69% | 2726 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,238 psi | 42% | 2448 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,420 psi | 58% | 2549 fps | 95% |
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 89 powders for 6.8 Western loaded with the .277 | 150gr | Swift A-Frame. Winchester StaBALL HD delivers the highest muzzle velocity at 3,061 fps; across all powders the maximum-charge window runs from 1,788 fps to 3,061 fps. ADI AR 2217 gives the best case fill at 100 %, and 89 of the 89 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 1:11.0 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. Alliant Reloder-26, Norma MRP, Vihtavuori N560 rank at the top here: for 6.8 Western with the .277 | 150gr | Swift A-Frame they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, IMR 8133 Enduron, Vihtavuori N170, Vihtavuori N568 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.