Load Specifications
Load data in caliber 6.8 Western with .277 | 140gr | Peregrine VLR-4 Compact bullet and 96 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 2495 | <<locked>> | 82% | 55,970 psi | 86% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,580 psi | 89% | 2923 fps | 99.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 2969 fps | 99.9% |
| Accurate 4064 | <<locked>> | 84% | 56,739 psi | 87% | 2900 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 58,146 psi | 89% | 3022 fps | 100% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 58,784 psi | 90% | 3127 fps | 97.2% |
| ADI AR 2208 | <<locked>> | 86% | 57,014 psi | 88% | 2940 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 55,448 psi | 85% | 3012 fps | 98.5% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 56,985 psi | 88% | 3068 fps | 97.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 56,594 psi | 87% | 3064 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,856 psi | 89% | 2963 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 58,015 psi | 89% | 2986 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,347 psi | 85% | 3025 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 56,695 psi | 87% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 58,479 psi | 90% | 3054 fps | 99% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 3061 fps | 98.8% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,837 psi | 81% | 2986 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,643 psi | 70% | 2910 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 98% | 57,217 psi | 88% | 3133 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,184 psi | 79% | 2979 fps | 97.9% |
| Bofors RP3 | <<locked>> | 84% | 55,013 psi | 85% | 2923 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 56,028 psi | 86% | 3061 fps | 98.8% |
| Bofors RP7 | <<locked>> | 90% | 58,102 psi | 89% | 2969 fps | 99.4% |
| Hodgdon H380 | <<locked>> | 84% | 55,506 psi | 85% | 2946 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 56,536 psi | 87% | 3018 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 56,304 psi | 87% | 2979 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 98% | 57,072 psi | 88% | 3009 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 98% | 55,825 psi | 86% | 2989 fps | 96.9% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 55,492 psi | 85% | 2943 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 57,000 psi | 88% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,701 psi | 69% | 2946 fps | 97.3% |
| Hodgdon Superformance | <<locked>> | 90% | 57,014 psi | 88% | 3058 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,361 psi | 56% | 1837 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 57,435 psi | 88% | 2943 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 56,231 psi | 87% | 2917 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 55,521 psi | 85% | 2907 fps | 99.4% |
| IMR 4350 | <<locked>> | 92% | 55,724 psi | 86% | 2949 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 88% | 56,231 psi | 87% | 2943 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 58,523 psi | 90% | 3009 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,724 psi | 86% | 2956 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 58,479 psi | 90% | 2995 fps | 97.5% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 54,331 psi | 84% | 3038 fps | 97.4% |
| Lovex S060 | <<locked>> | 82% | 57,682 psi | 89% | 2904 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,594 psi | 87% | 2913 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 56,260 psi | 87% | 2936 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 57,798 psi | 89% | 2982 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,238 psi | 71% | 2812 fps | 98.9% |
| Norma 201 | <<locked>> | 82% | 57,653 psi | 89% | 2920 fps | 100% |
| Norma 202 | <<locked>> | 82% | 58,610 psi | 90% | 2917 fps | 100% |
| Norma 203B | <<locked>> | 84% | 57,246 psi | 88% | 2969 fps | 100% |
| Norma 204 | <<locked>> | 92% | 56,608 psi | 87% | 3005 fps | 98.5% |
| Norma MRP | <<locked>> | 98% | 55,608 psi | 86% | 3084 fps | 99.6% |
| Norma URP | <<locked>> | 92% | 56,811 psi | 87% | 3005 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 58,494 psi | 90% | 2999 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,781 psi | 84% | 3054 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 92% | 55,535 psi | 85% | 3005 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,776 psi | 75% | 2923 fps | 98.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,985 psi | 57% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 55,463 psi | 85% | 2930 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 56,246 psi | 87% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 58,218 psi | 90% | 3045 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 56,652 psi | 87% | 3074 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,744 psi | 69% | 2940 fps | 98.3% |
| Rottweil R 902 | <<locked>> | 84% | 58,392 psi | 90% | 2923 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 58,726 psi | 90% | 2972 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 57,145 psi | 88% | 2982 fps | 97.8% |
| Rottweil R 905 | <<locked>> | 98% | 57,682 psi | 89% | 3041 fps | 99% |
| Rottweil R 907 | <<locked>> | 90% | 58,102 psi | 89% | 2969 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 90% | 56,260 psi | 87% | 2936 fps | 99.9% |
| Shooters World Precision | <<locked>> | 84% | 56,594 psi | 87% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,798 psi | 89% | 2982 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 57,087 psi | 88% | 2986 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,609 psi | 89% | 2953 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 58,421 psi | 90% | 2848 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 56,057 psi | 86% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 56,028 psi | 86% | 2894 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 57,203 psi | 88% | 3038 fps | 98.9% |
| Somchem S335 | <<locked>> | 82% | 58,073 psi | 89% | 2841 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 58,581 psi | 90% | 2966 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 55,259 psi | 85% | 2917 fps | 96.7% |
| Somchem S365 | <<locked>> | 94% | 56,188 psi | 86% | 3002 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 58,392 psi | 90% | 3015 fps | 99.5% |
| Vihtavuori N135 | <<locked>> | 82% | 55,347 psi | 85% | 2828 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,724 psi | 86% | 2848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 56,376 psi | 87% | 2887 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,100 psi | 85% | 2943 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,070 psi | 83% | 2933 fps | 98.8% |
| Vihtavuori N540 | <<locked>> | 84% | 57,464 psi | 88% | 2890 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,986 psi | 89% | 3005 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 55,216 psi | 85% | 3009 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 55,796 psi | 86% | 3077 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,911 psi | 84% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 56,840 psi | 87% | 3022 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,530 psi | 75% | 3051 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 58,102 psi | 89% | 2963 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 58,784 psi | 90% | 3015 fps | 98.9% |
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 2495 | <<locked>> | 80% | 52,533 psi | 81% | 2792 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,531 psi | 78% | 2808 fps | 98.3% |
| Accurate 3100 | <<locked>> | 86% | 34,345 psi | 53% | 2562 fps | 95.9% |
| Accurate 4064 | <<locked>> | 80% | 49,864 psi | 77% | 2802 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,174 psi | 59% | 2667 fps | 98.6% |
| Accurate MAGPRO | <<locked>> | 96% | 50,836 psi | 78% | 2992 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 80% | 47,268 psi | 73% | 2782 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 42,569 psi | 65% | 2772 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 46,282 psi | 71% | 2874 fps | 95.2% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 52,794 psi | 81% | 3005 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,645 psi | 73% | 2802 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 51,082 psi | 79% | 2877 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,159 psi | 57% | 2677 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,569 psi | 65% | 2812 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 42,221 psi | 65% | 2766 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 39,798 psi | 61% | 2756 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,122 psi | 42% | 2421 fps | 96.5% |
| Alliant Reloder-25 | <<locked>> | 90% | 32,909 psi | 51% | 2605 fps | 95.9% |
| Alliant Reloder-26 | 56.1 gr | 82% | 31,256 psi | 48% | 2598 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 41,843 psi | 64% | 2799 fps | 95.5% |
| Bofors RP3 | <<locked>> | 80% | 47,993 psi | 74% | 2815 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 39,798 psi | 61% | 2756 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 42,090 psi | 65% | 2684 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 48,515 psi | 75% | 2828 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 40,277 psi | 62% | 2717 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 80% | 43,178 psi | 66% | 2743 fps | 96.2% |
| Hodgdon H4831 | <<locked>> | 94% | 49,647 psi | 76% | 2884 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 48,588 psi | 75% | 2867 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,708 psi | 53% | 2569 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 53,069 psi | 82% | 2920 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 39,247 psi | 60% | 2812 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 39,276 psi | 60% | 2730 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,079 psi | 42% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,751 psi | 83% | 2887 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,705 psi | 76% | 2815 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 52,011 psi | 80% | 2848 fps | 99.1% |
| IMR 4350 | <<locked>> | 80% | 37,869 psi | 58% | 2608 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,772 psi | 67% | 2720 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 36,608 psi | 56% | 2618 fps | 98.3% |
| IMR 4895 | <<locked>> | 80% | 52,431 psi | 81% | 2907 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 48,327 psi | 74% | 2825 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 96% | 47,282 psi | 73% | 2907 fps | 95.6% |
| Lovex S060 | <<locked>> | 80% | 54,331 psi | 84% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,835 psi | 77% | 2808 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,133 psi | 63% | 2667 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 39,247 psi | 60% | 2644 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 33,214 psi | 51% | 2533 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 54,244 psi | 83% | 2871 fps | 100% |
| Norma 202 | <<locked>> | 80% | 54,882 psi | 84% | 2864 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,415 psi | 78% | 2864 fps | 100% |
| Norma 204 | <<locked>> | 84% | 43,033 psi | 66% | 2762 fps | 95.6% |
| Norma MRP | 57.1 gr | 86% | 36,289 psi | 56% | 2700 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 37,971 psi | 58% | 2664 fps | 98.5% |
| Ramshot Big Game | <<locked>> | 80% | 50,966 psi | 78% | 2887 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 44,077 psi | 68% | 2854 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 36,840 psi | 57% | 2648 fps | 96.6% |
| Ramshot Magnum | <<locked>> | 94% | 39,001 psi | 60% | 2723 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,702 psi | 43% | 1683 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,443 psi | 75% | 2812 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 45,266 psi | 70% | 2867 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,058 psi | 59% | 2687 fps | 98.3% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,956 psi | 57% | 2694 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 38,769 psi | 60% | 2799 fps | 96.3% |
| Rottweil R 902 | <<locked>> | 80% | 51,430 psi | 79% | 2818 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,136 psi | 69% | 2759 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 46,963 psi | 72% | 2805 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 41,133 psi | 63% | 2743 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 42,090 psi | 65% | 2684 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,133 psi | 63% | 2667 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 49,835 psi | 77% | 2808 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,247 psi | 60% | 2644 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,514 psi | 72% | 2815 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 54,012 psi | 83% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 54,911 psi | 84% | 2799 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,485 psi | 72% | 2664 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,205 psi | 62% | 2608 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 40,756 psi | 63% | 2736 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 54,737 psi | 84% | 2795 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,556 psi | 70% | 2759 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 48,283 psi | 74% | 2802 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 34,476 psi | 53% | 2618 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 39,088 psi | 60% | 2667 fps | 95.8% |
| Vihtavuori N135 | <<locked>> | 80% | 51,967 psi | 80% | 2782 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,141 psi | 80% | 2795 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,424 psi | 67% | 2687 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,523 psi | 61% | 2664 fps | 98.8% |
| Vihtavuori N165 | <<locked>> | 90% | 38,464 psi | 59% | 2644 fps | 95.1% |
| Vihtavuori N540 | <<locked>> | 80% | 50,473 psi | 78% | 2792 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,899 psi | 60% | 2664 fps | 98.5% |
| Vihtavuori N555 | <<locked>> | 80% | 29,979 psi | 46% | 2500 fps | 96.6% |
| Vihtavuori N560 | 62.4 gr | 94% | 48,602 psi | 75% | 2949 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,537 psi | 59% | 2631 fps | 99.8% |
| Winchester 760 | <<locked>> | 80% | 40,495 psi | 62% | 2723 fps | 96.9% |
| Winchester StaBALL HD | <<locked>> | 82% | 25,425 psi | 39% | 2448 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 54,157 psi | 83% | 2907 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 41,162 psi | 63% | 2707 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 104 powders for 6.8 Western loaded with the .277 | 140gr | Peregrine VLR-4 Compact. Alliant Reloder-26 delivers the highest muzzle velocity at 3,133 fps; across all powders the maximum-charge window runs from 1,837 fps to 3,133 fps. Accurate 3100 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 49–90 %, leaving at least 10 % headroom. The 140.0 gr projectile in 0.277" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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 | 140gr | Peregrine VLR-4 Compact they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Bofors RP30 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.