Load Specifications
Load data in caliber 6.8 Western with .277 | 155gr | Barnes LRX BT bullet and 93 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.
A valid access license is required to use the Personalized Load Calculator.
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 2495 | <<locked>> | 82% | 57,638 psi | 89% | 2707 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 55,535 psi | 85% | 2749 fps | 99.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 57,885 psi | 89% | 2851 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 58,276 psi | 90% | 2766 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 56,217 psi | 86% | 2844 fps | 100% |
| Accurate MAGPRO | <<locked>> | 98% | 56,449 psi | 87% | 2946 fps | 97.6% |
| ADI AR 2208 | <<locked>> | 86% | 58,436 psi | 90% | 2808 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 57,290 psi | 88% | 2897 fps | 99.3% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 58,784 psi | 90% | 2956 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 37,347 psi | 57% | 2612 fps | 97% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 58,508 psi | 90% | 2936 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 55,912 psi | 86% | 2782 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 55,970 psi | 86% | 2802 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 57,087 psi | 88% | 2897 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 58,813 psi | 90% | 2920 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 56,565 psi | 87% | 2881 fps | 99.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 2946 fps | 99.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,810 psi | 84% | 2864 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,340 psi | 73% | 2808 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 96% | 55,216 psi | 85% | 2956 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,098 psi | 82% | 2871 fps | 98.9% |
| Bofors RP3 | <<locked>> | 84% | 56,768 psi | 87% | 2799 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 43,076 psi | 66% | 2730 fps | 96.3% |
| Bofors RP5ᴾ | <<locked>> | 100% | 57,943 psi | 89% | 2946 fps | 99.5% |
| Bofors RP7 | <<locked>> | 88% | 56,086 psi | 86% | 2795 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 46,847 psi | 72% | 2749 fps | 97.3% |
| Hodgdon H380 | <<locked>> | 84% | 56,927 psi | 88% | 2815 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 58,421 psi | 90% | 2900 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 88% | 57,740 psi | 89% | 2854 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 98% | 58,711 psi | 90% | 2894 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 57,421 psi | 88% | 2874 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 57,305 psi | 88% | 2818 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 58,552 psi | 90% | 2848 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,209 psi | 71% | 2848 fps | 98.6% |
| Hodgdon Superformance | <<locked>> | 88% | 54,737 psi | 84% | 2877 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,521 psi | 56% | 1732 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 58,740 psi | 90% | 2808 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 57,827 psi | 89% | 2789 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 56,811 psi | 87% | 2782 fps | 99.8% |
| IMR 4350 | <<locked>> | 92% | 57,377 psi | 88% | 2831 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 57,638 psi | 89% | 2818 fps | 99.8% |
| IMR 4831 | <<locked>> | 92% | 56,507 psi | 87% | 2831 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 57,450 psi | 88% | 2828 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 56,420 psi | 87% | 2825 fps | 97.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 56,101 psi | 86% | 2927 fps | 98.5% |
| Lovex S062 | <<locked>> | 84% | 57,943 psi | 89% | 2779 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 57,870 psi | 89% | 2815 fps | 100% |
| Lovex S070 | <<locked>> | 90% | 55,811 psi | 86% | 2808 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 47,964 psi | 74% | 2703 fps | 99.6% |
| Norma 203B | <<locked>> | 82% | 55,274 psi | 85% | 2789 fps | 100% |
| Norma 204 | <<locked>> | 92% | 58,378 psi | 90% | 2887 fps | 99.3% |
| Norma MRP | <<locked>> | 98% | 57,754 psi | 89% | 2972 fps | 99.9% |
| Norma URP | <<locked>> | 92% | 58,610 psi | 90% | 2881 fps | 100% |
| Ramshot Big Game | <<locked>> | 82% | 56,115 psi | 86% | 2815 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 56,637 psi | 87% | 2946 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 92% | 57,348 psi | 88% | 2887 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 50,676 psi | 78% | 2822 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,231 psi | 57% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 56,985 psi | 88% | 2808 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 58,175 psi | 89% | 2904 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 56,260 psi | 87% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 58,595 psi | 90% | 2953 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,296 psi | 71% | 2844 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 82% | 56,304 psi | 87% | 2743 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 56,942 psi | 88% | 2795 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,172 psi | 85% | 2812 fps | 98.2% |
| Rottweil R 905 | <<locked>> | 96% | 55,695 psi | 86% | 2867 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 88% | 56,086 psi | 86% | 2795 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 90% | 57,870 psi | 89% | 2815 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 57,943 psi | 89% | 2779 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 55,811 psi | 86% | 2808 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 58,581 psi | 90% | 2854 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 57,580 psi | 89% | 2674 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 57,479 psi | 88% | 2769 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 55,230 psi | 85% | 2861 fps | 99.2% |
| Somchem S355 | <<locked>> | 86% | 56,681 psi | 87% | 2789 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 56,782 psi | 87% | 2805 fps | 97.8% |
| Somchem S365 | <<locked>> | 94% | 58,436 psi | 90% | 2877 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 56,260 psi | 87% | 2841 fps | 99.6% |
| Vihtavuori N135 | <<locked>> | 82% | 56,956 psi | 88% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 57,276 psi | 88% | 2717 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 58,204 psi | 90% | 2762 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 57,029 psi | 88% | 2822 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 55,738 psi | 86% | 2818 fps | 99.4% |
| Vihtavuori N540 | <<locked>> | 82% | 55,303 psi | 85% | 2713 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 55,753 psi | 86% | 2825 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 57,014 psi | 88% | 2887 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 57,827 psi | 89% | 2966 fps | 98.3% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 49,400 psi | 76% | 2815 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 56,507 psi | 87% | 2782 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 58,421 psi | 90% | 2900 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,908 psi | 78% | 2940 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 56,739 psi | 87% | 2841 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 2495 | <<locked>> | 80% | 53,969 psi | 83% | 2661 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 51,866 psi | 80% | 2694 fps | 99.1% |
| Accurate 3100 | <<locked>> | 82% | 31,009 psi | 48% | 2359 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 51,227 psi | 79% | 2674 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,595 psi | 61% | 2566 fps | 99.4% |
| Accurate MAGPRO | <<locked>> | 92% | 45,643 psi | 70% | 2759 fps | 95% |
| ADI AR 2208 | <<locked>> | 80% | 48,588 psi | 75% | 2661 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 38,276 psi | 59% | 2549 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 92% | 44,730 psi | 69% | 2713 fps | 95.8% |
| ADI AR 2225 | <<locked>> | 98% | 35,012 psi | 54% | 2552 fps | 96% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 54,679 psi | 84% | 2881 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,168 psi | 76% | 2684 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 52,504 psi | 81% | 2753 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,435 psi | 59% | 2575 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 44,106 psi | 68% | 2697 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 38,101 psi | 59% | 2546 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 38,392 psi | 59% | 2595 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,021 psi | 43% | 2336 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,878 psi | 46% | 2402 fps | 95.5% |
| Alliant Reloder-26 | 52.1 gr | 80% | 30,066 psi | 46% | 2448 fps | 96.6% |
| Bofors RP15 | <<locked>> | 90% | 38,087 psi | 59% | 2585 fps | 95.3% |
| Bofors RP3 | <<locked>> | 80% | 49,530 psi | 76% | 2694 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 40,248 psi | 62% | 2667 fps | 95.3% |
| Bofors RP5 | <<locked>> | 88% | 38,392 psi | 59% | 2595 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 43,381 psi | 67% | 2579 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 96% | 40,930 psi | 63% | 2631 fps | 95.5% |
| Hodgdon H380 | <<locked>> | 80% | 49,777 psi | 77% | 2710 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 41,771 psi | 64% | 2618 fps | 98% |
| Hodgdon H4350 | <<locked>> | 80% | 44,527 psi | 69% | 2635 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 90% | 44,686 psi | 69% | 2661 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 46,963 psi | 72% | 2703 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,027 psi | 55% | 2467 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 54,940 psi | 85% | 2799 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 37,985 psi | 58% | 2661 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 40,698 psi | 63% | 2631 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,224 psi | 42% | 1545 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 55,129 psi | 85% | 2756 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,126 psi | 79% | 2694 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 53,345 psi | 82% | 2730 fps | 99.6% |
| IMR 4350 | <<locked>> | 80% | 38,986 psi | 60% | 2510 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,889 psi | 69% | 2608 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 38,058 psi | 59% | 2520 fps | 99.2% |
| IMR 4895 | <<locked>> | 80% | 53,896 psi | 83% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 43,816 psi | 67% | 2608 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 92% | 42,641 psi | 66% | 2684 fps | 95.3% |
| Lovex S062 | <<locked>> | 80% | 51,285 psi | 79% | 2687 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,177 psi | 65% | 2556 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 40,582 psi | 62% | 2543 fps | 97.9% |
| Lovex S071 | <<locked>> | 86% | 30,298 psi | 47% | 2339 fps | 95.3% |
| Norma 203B | <<locked>> | 80% | 51,866 psi | 80% | 2736 fps | 100% |
| Norma 204 | <<locked>> | 80% | 38,653 psi | 59% | 2539 fps | 95.2% |
| Norma MRP | 53.1 gr | 84% | 34,969 psi | 54% | 2546 fps | 95.8% |
| Norma URP | <<locked>> | 80% | 39,436 psi | 61% | 2562 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 80% | 52,663 psi | 81% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 42,366 psi | 65% | 2694 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 38,261 psi | 59% | 2552 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 90% | 34,925 psi | 54% | 2507 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,920 psi | 43% | 1588 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,719 psi | 76% | 2694 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,876 psi | 72% | 2746 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,479 psi | 61% | 2585 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,290 psi | 59% | 2598 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 34,751 psi | 53% | 2575 fps | 95.7% |
| Rottweil R 902 | <<locked>> | 80% | 53,113 psi | 82% | 2697 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 46,731 psi | 72% | 2644 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 42,540 psi | 65% | 2589 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 37,159 psi | 57% | 2526 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 43,381 psi | 67% | 2579 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,177 psi | 65% | 2556 fps | 99% |
| Shooters World Precision | <<locked>> | 80% | 51,285 psi | 79% | 2687 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,582 psi | 62% | 2543 fps | 97.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,124 psi | 74% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,892 psi | 74% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,350 psi | 64% | 2503 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 36,840 psi | 57% | 2523 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 46,775 psi | 72% | 2638 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 46,340 psi | 71% | 2635 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 35,839 psi | 55% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 35,244 psi | 54% | 2454 fps | 95.4% |
| Vihtavuori N135 | <<locked>> | 80% | 53,621 psi | 82% | 2654 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 53,737 psi | 83% | 2671 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 44,904 psi | 69% | 2572 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 40,814 psi | 63% | 2559 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 37,188 psi | 57% | 2493 fps | 95.7% |
| Vihtavuori N540 | <<locked>> | 80% | 51,677 psi | 80% | 2664 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 40,030 psi | 62% | 2559 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 31,140 psi | 48% | 2408 fps | 97.9% |
| Vihtavuori N560 | 56.9 gr | 90% | 43,656 psi | 67% | 2717 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 96% | 42,946 psi | 66% | 2697 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,885 psi | 61% | 2526 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 41,771 psi | 64% | 2618 fps | 98% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,714 psi | 38% | 2316 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 39,885 psi | 61% | 2556 fps | 95.9% |
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 98 powders for 6.8 Western loaded with the .277 | 155gr | Barnes LRX BT. Norma MRP delivers the highest muzzle velocity at 2,972 fps; across all powders the maximum-charge window runs from 1,732 fps to 2,972 fps. Accurate 3100 gives the best case fill at 100 %, and 98 of the 98 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 50–90 %, leaving at least 10 % headroom. The 155.0 gr projectile in 0.277" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2213, ADI AR 2217 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 | 155gr | Barnes LRX BT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Norma 217, ReloadSwiss RS 80, 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.