Load Specifications
Load data in caliber 6.8 Western with .277 | 180gr | Woodleigh PP SN bullet and 77 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Ramshot Grand, Hodgdon Retumbo and Alliant Reloder-26.
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 2700 | <<locked>> | 82% | 57,885 psi | 89% | 2595 fps | 100% |
| Accurate 3100 | <<locked>> | 94% | 57,653 psi | 89% | 2657 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 55,419 psi | 85% | 2631 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 56,971 psi | 88% | 2762 fps | 98.7% |
| ADI AR 2209 | <<locked>> | 90% | 55,941 psi | 86% | 2690 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 94% | 57,580 psi | 89% | 2756 fps | 99.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,605 psi | 79% | 2667 fps | 99.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,064 psi | 71% | 2635 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 56,130 psi | 86% | 2687 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 86% | 56,246 psi | 87% | 2680 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 57,246 psi | 88% | 2690 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 55,463 psi | 85% | 2680 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 57,696 psi | 89% | 2749 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 94% | 55,448 psi | 85% | 2664 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 58,175 psi | 89% | 2772 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 55,724 psi | 86% | 2753 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 58,552 psi | 90% | 2717 fps | 98% |
| Bofors RP15 | <<locked>> | 96% | 56,521 psi | 87% | 2733 fps | 99.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,273 psi | 83% | 2736 fps | 99.7% |
| Bofors RP5 | <<locked>> | 94% | 57,696 psi | 89% | 2749 fps | 100% |
| Bofors RP7 | <<locked>> | 84% | 57,363 psi | 88% | 2628 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 56,913 psi | 88% | 2746 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 56,739 psi | 87% | 2680 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 55,811 psi | 86% | 2644 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 92% | 57,363 psi | 88% | 2694 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 56,202 psi | 86% | 2677 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 56,594 psi | 87% | 2608 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 57,116 psi | 88% | 2854 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 57,392 psi | 88% | 2723 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,347 psi | 57% | 1634 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 55,434 psi | 85% | 2621 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 84% | 58,581 psi | 90% | 2648 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 55,709 psi | 86% | 2625 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 58,262 psi | 90% | 2677 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 94% | 55,477 psi | 85% | 2736 fps | 99.6% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,655 psi | 64% | 2546 fps | 97.7% |
| Lovex S065 | <<locked>> | 84% | 55,912 psi | 86% | 2598 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 57,609 psi | 89% | 2644 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 55,288 psi | 85% | 2628 fps | 100% |
| Norma 204 | <<locked>> | 86% | 56,550 psi | 87% | 2677 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 41,829 psi | 64% | 2572 fps | 99.4% |
| Norma MRP | <<locked>> | 92% | 57,667 psi | 89% | 2769 fps | 100% |
| Norma URP | <<locked>> | 86% | 57,174 psi | 88% | 2661 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 56,304 psi | 87% | 2756 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 86% | 56,144 psi | 86% | 2674 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 58,566 psi | 90% | 2746 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,203 psi | 59% | 1673 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,347 psi | 85% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 57,377 psi | 88% | 2730 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 57,827 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,779 psi | 81% | 2756 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 90% | 57,000 psi | 88% | 2661 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 92% | 58,682 psi | 90% | 2723 fps | 100% |
| Rottweil R 907 | <<locked>> | 84% | 57,363 psi | 88% | 2628 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 55,912 psi | 86% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 57,609 psi | 89% | 2644 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 58,233 psi | 90% | 2490 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 58,552 psi | 90% | 2605 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 58,233 psi | 90% | 2717 fps | 100% |
| Somchem S355 | <<locked>> | 82% | 58,407 psi | 90% | 2612 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 58,566 psi | 90% | 2657 fps | 99.4% |
| Somchem S365 | <<locked>> | 88% | 58,102 psi | 89% | 2664 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,463 psi | 85% | 2644 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 56,188 psi | 86% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,506 psi | 85% | 2605 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 55,027 psi | 85% | 2628 fps | 100% |
| Vihtavuori N170ᴾ | <<locked>> | 100% | 57,319 psi | 88% | 2694 fps | 96.1% |
| Vihtavuori N550 | <<locked>> | 86% | 58,189 psi | 90% | 2661 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 57,711 psi | 89% | 2690 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 57,334 psi | 88% | 2769 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 98% | 57,174 psi | 88% | 2753 fps | 99.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,766 psi | 83% | 2756 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 50,879 psi | 78% | 2746 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 58,421 psi | 90% | 2612 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 57,029 psi | 88% | 2687 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 57,159 psi | 88% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,332 psi | 85% | 2644 fps | 99.9% |
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% | 54,012 psi | 83% | 2543 fps | 100% |
| Accurate 3100 | <<locked>> | 80% | 36,361 psi | 56% | 2316 fps | 99% |
| Accurate 4350 | <<locked>> | 80% | 48,501 psi | 75% | 2533 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,221 psi | 66% | 2533 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 40,277 psi | 62% | 2428 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 80% | 35,911 psi | 55% | 2365 fps | 95.2% |
| ADI AR 2217 | <<locked>> | 88% | 34,795 psi | 54% | 2339 fps | 95% |
| ADI AR 2225 | <<locked>> | 86% | 29,428 psi | 45% | 2254 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,756 psi | 63% | 2431 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,427 psi | 71% | 2539 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 53,476 psi | 82% | 2641 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,379 psi | 62% | 2425 fps | 98% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,143 psi | 56% | 2375 fps | 96.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,925 psi | 54% | 2336 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,298 psi | 47% | 2264 fps | 98.1% |
| Alliant Reloder-26 | 53.8 gr | 80% | 38,290 psi | 59% | 2474 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 46,021 psi | 71% | 2510 fps | 95.2% |
| Bofors RP15 | <<locked>> | 80% | 33,649 psi | 52% | 2316 fps | 95.8% |
| Bofors RP30 | <<locked>> | 86% | 33,837 psi | 52% | 2352 fps | 95.2% |
| Bofors RP5 | <<locked>> | 80% | 36,143 psi | 56% | 2375 fps | 96.9% |
| Bofors RP7 | <<locked>> | 80% | 50,546 psi | 78% | 2530 fps | 99.9% |
| Hodgdon H1000 | <<locked>> | 84% | 33,185 psi | 51% | 2303 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 49,951 psi | 77% | 2582 fps | 100% |
| Hodgdon H4350 | <<locked>> | 80% | 52,286 psi | 80% | 2592 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 80% | 38,247 psi | 59% | 2369 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,652 psi | 58% | 2356 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,656 psi | 67% | 2425 fps | 100% |
| Hodgdon Retumbo | 51.6 gr | 82% | 31,575 psi | 49% | 2339 fps | 95.6% |
| Hodgdon Superformance | <<locked>> | 80% | 49,588 psi | 76% | 2612 fps | 99.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,050 psi | 43% | 1457 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,064 psi | 71% | 2474 fps | 99.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 52,040 psi | 80% | 2552 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 45,832 psi | 71% | 2480 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,016 psi | 62% | 2372 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 82% | 36,970 psi | 57% | 2398 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 94% | 34,403 psi | 53% | 2388 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 49,632 psi | 76% | 2507 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,877 psi | 74% | 2500 fps | 99.9% |
| Lovex S071 | <<locked>> | 80% | 31,270 psi | 48% | 2201 fps | 97.7% |
| Norma 204 | <<locked>> | 80% | 46,209 psi | 71% | 2516 fps | 98.9% |
| Norma 217 | <<locked>> | 90% | 30,211 psi | 46% | 2303 fps | 95.8% |
| Norma MRP | <<locked>> | 80% | 37,782 psi | 58% | 2438 fps | 98.6% |
| Norma URP | <<locked>> | 80% | 47,239 psi | 73% | 2516 fps | 100% |
| Ramshot Grand | 51.8 gr | 80% | 34,127 psi | 53% | 2349 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 46,093 psi | 71% | 2520 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,342 psi | 47% | 2241 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,660 psi | 44% | 1493 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,414 psi | 74% | 2556 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,340 psi | 71% | 2572 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 28,500 psi | 44% | 2251 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 92% | 39,276 psi | 60% | 2510 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 41,669 psi | 64% | 2408 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 80% | 39,740 psi | 61% | 2411 fps | 98% |
| Rottweil R 907 | <<locked>> | 80% | 50,546 psi | 78% | 2530 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,632 psi | 76% | 2507 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,877 psi | 74% | 2500 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 54,781 psi | 84% | 2448 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,573 psi | 75% | 2461 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,407 psi | 61% | 2408 fps | 97.9% |
| Somchem S355 | <<locked>> | 80% | 54,998 psi | 85% | 2569 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 42,119 psi | 65% | 2398 fps | 96.6% |
| Somchem S365 | <<locked>> | 80% | 44,512 psi | 68% | 2477 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,234 psi | 62% | 2395 fps | 98.7% |
| Vihtavuori N150 | <<locked>> | 80% | 52,562 psi | 81% | 2497 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,805 psi | 75% | 2513 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,983 psi | 54% | 2283 fps | 97% |
| Vihtavuori N170 | <<locked>> | 98% | 53,606 psi | 82% | 2638 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 48,124 psi | 74% | 2516 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,175 psi | 60% | 2405 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 37,898 psi | 58% | 2428 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 84% | 35,766 psi | 55% | 2372 fps | 95.1% |
| Vihtavuori N568 | <<locked>> | 92% | 40,712 psi | 63% | 2523 fps | 95.3% |
| Vihtavuori N570 | <<locked>> | 98% | 47,471 psi | 73% | 2687 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,761 psi | 73% | 2474 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,951 psi | 77% | 2582 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,067 psi | 48% | 2369 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,724 psi | 56% | 2326 fps | 97% |
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 77 powders for 6.8 Western loaded with the .277 | 180gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 2,854 fps; across all powders the maximum-charge window runs from 1,634 fps to 2,854 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.277" calls for a 1:10.5 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. Ramshot Grand, Hodgdon Retumbo, Alliant Reloder-26 rank at the top here: for 6.8 Western with the .277 | 180gr | Woodleigh PP SN 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.