Load Specifications
Bullet:.277 | 120gr | Hornady SST
Bullet Manufacturer:Hornady
Bullet Weight:120 gr
Bullet Diameter:0.277"
Bullet Length:<<locked>>
Caliber:6.8 Western load data
Case Length (l3):2.02"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:75.5 Grains of Water
Primer Size:Large Rifle
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:10.5
Load data in caliber 6.8 Western with .277 | 120gr | Hornady SST bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Alliant Reloder-17 and Alliant Reloder-16.
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>> | 84% | 55,317 psi | 85% | 3041 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,898 psi | 88% | 3104 fps | 98% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,328 psi | 77% | 3068 fps | 98.4% |
| Accurate 4064 | <<locked>> | 86% | 55,738 psi | 86% | 3097 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,434 psi | 87% | 3202 fps | 99.9% |
| Accurate High Countryᴾ | <<locked>> | 100% | 55,129 psi | 85% | 3278 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 84% | 58,450 psi | 90% | 3182 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,057 psi | 86% | 3130 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 57,711 psi | 89% | 3238 fps | 97.4% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,014 psi | 88% | 3123 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,187 psi | 85% | 3258 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 57,479 psi | 88% | 3232 fps | 97.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,608 psi | 87% | 3153 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,072 psi | 88% | 3179 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,811 psi | 87% | 3258 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 58,740 psi | 90% | 3294 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,608 psi | 87% | 3219 fps | 97.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 3150 fps | 96.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,195 psi | 73% | 3094 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,423 psi | 64% | 2989 fps | 97.1% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,288 psi | 84% | 3297 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 58,697 psi | 90% | 3202 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,479 psi | 88% | 3169 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,154 psi | 77% | 3150 fps | 96.1% |
| Bofors RP7 | <<locked>> | 92% | 57,058 psi | 88% | 3146 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,247 psi | 90% | 3100 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,087 psi | 88% | 3156 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,291 psi | 90% | 3189 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 94% | 58,668 psi | 90% | 3255 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 92% | 58,450 psi | 90% | 3209 fps | 97.9% |
| Hodgdon H4895 | <<locked>> | 82% | 55,405 psi | 85% | 3136 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,334 psi | 88% | 3176 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,666 psi | 86% | 3173 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,347 psi | 85% | 3228 fps | 98.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,013 psi | 55% | 1975 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,507 psi | 87% | 3136 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,782 psi | 86% | 3117 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,317 psi | 85% | 3107 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,392 psi | 90% | 3146 fps | 98.8% |
| IMR 4350 | <<locked>> | 96% | 57,841 psi | 89% | 3176 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,813 psi | 90% | 3179 fps | 98.8% |
| IMR 4831 | <<locked>> | 96% | 56,536 psi | 87% | 3186 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 58,581 psi | 90% | 3212 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,014 psi | 88% | 3123 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,172 psi | 85% | 3097 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,101 psi | 88% | 3097 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,695 psi | 86% | 3107 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,755 psi | 90% | 3176 fps | 99.6% |
| Lovex S070 | <<locked>> | 94% | 56,362 psi | 87% | 3156 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,655 psi | 64% | 2900 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 56,971 psi | 88% | 3120 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,740 psi | 89% | 3120 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,333 psi | 87% | 3166 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,013 psi | 85% | 3169 fps | 96.8% |
| Norma MRPᴾ | <<locked>> | 100% | 53,316 psi | 82% | 3245 fps | 98.2% |
| Norma URP | <<locked>> | 96% | 58,726 psi | 90% | 3241 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,014 psi | 88% | 3189 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,377 psi | 88% | 3235 fps | 99.3% |
| Ramshot TAC | <<locked>> | 82% | 57,305 psi | 88% | 3146 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,363 psi | 88% | 3166 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 56% | 2018 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,175 psi | 89% | 3166 fps | 99.2% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,928 psi | 89% | 3251 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,044 psi | 89% | 3287 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,028 psi | 86% | 3219 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 58,755 psi | 90% | 3314 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 57,798 psi | 89% | 3097 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,711 psi | 89% | 3120 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,580 psi | 89% | 3166 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,506 psi | 85% | 3140 fps | 95.8% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,695 psi | 86% | 3205 fps | 97.3% |
| Rottweil R 907 | <<locked>> | 92% | 57,058 psi | 88% | 3146 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,755 psi | 90% | 3176 fps | 99.6% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,172 psi | 85% | 3097 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,695 psi | 86% | 3107 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,362 psi | 87% | 3156 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,695 psi | 86% | 3173 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,086 psi | 86% | 3123 fps | 99.6% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,753 psi | 87% | 3146 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 58,073 psi | 89% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,390 psi | 85% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 58,813 psi | 90% | 3123 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,201 psi | 85% | 3199 fps | 97.2% |
| Somchem S335 | <<locked>> | 84% | 57,537 psi | 89% | 3045 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,782 psi | 86% | 3114 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,624 psi | 89% | 3159 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 57,798 psi | 89% | 3241 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,521 psi | 87% | 3179 fps | 98.2% |
| Vihtavuori N133 | <<locked>> | 84% | 58,494 psi | 90% | 3031 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,914 psi | 89% | 3077 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,465 psi | 90% | 3097 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,448 psi | 85% | 3081 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,348 psi | 88% | 3179 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,747 psi | 75% | 3028 fps | 96.2% |
| Vihtavuori N530 | <<locked>> | 82% | 57,638 psi | 89% | 3123 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,434 psi | 87% | 3087 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,478 psi | 87% | 3182 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,707 psi | 81% | 3179 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,188 psi | 88% | 3143 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,117 psi | 89% | 3176 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,187 psi | 85% | 3196 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,685 psi | 66% | 3136 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,058 psi | 88% | 3156 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,214 psi | 82% | 3110 fps | 96.5% |
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% | 48,515 psi | 75% | 2940 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,644 psi | 72% | 2917 fps | 95.8% |
| Accurate 3100 | <<locked>> | 92% | 38,203 psi | 59% | 2822 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 45,919 psi | 71% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,548 psi | 53% | 2759 fps | 95.9% |
| Accurate High Country | <<locked>> | 98% | 51,184 psi | 79% | 3205 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 51,372 psi | 79% | 3064 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 80% | 43,627 psi | 67% | 2900 fps | 98.8% |
| ADI AR 2209 | <<locked>> | 96% | 50,415 psi | 78% | 3110 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,447 psi | 82% | 3068 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,935 psi | 74% | 3127 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 47,297 psi | 73% | 3045 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,961 psi | 68% | 2930 fps | 99.7% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,949 psi | 72% | 3002 fps | 99.4% |
| Alliant Reloder-16 | 49.8 gr | 80% | 34,127 psi | 53% | 2772 fps | 95.9% |
| Alliant Reloder-17 | 53.6 gr | 80% | 38,435 psi | 59% | 2910 fps | 98.9% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,688 psi | 72% | 3038 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,862 psi | 72% | 3084 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 30,168 psi | 46% | 2674 fps | 95.9% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,376 psi | 56% | 2858 fps | 95.1% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,853 psi | 54% | 2867 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,184 psi | 79% | 3077 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 44,150 psi | 68% | 2940 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 46,862 psi | 72% | 3084 fps | 95.2% |
| Bofors RP7 | <<locked>> | 84% | 44,382 psi | 68% | 2907 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,708 psi | 84% | 3048 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,490 psi | 82% | 3100 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,527 psi | 69% | 2943 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 84% | 42,047 psi | 65% | 2940 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 86% | 48,356 psi | 74% | 3028 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 51,938 psi | 80% | 3077 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,662 psi | 49% | 2661 fps | 96.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,515 psi | 75% | 3051 fps | 100% |
| Hodgdon Superformance | <<locked>> | 86% | 44,309 psi | 68% | 3015 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,861 psi | 41% | 1765 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,850 psi | 77% | 3025 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,359 psi | 81% | 3061 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,861 psi | 71% | 2940 fps | 99.3% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,225 psi | 74% | 2966 fps | 97.1% |
| IMR 4350 | <<locked>> | 88% | 44,918 psi | 69% | 2940 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 43,149 psi | 66% | 2887 fps | 95.6% |
| IMR 4831 | <<locked>> | 80% | 33,431 psi | 51% | 2713 fps | 95.5% |
| IMR 4895 | <<locked>> | 80% | 48,167 psi | 74% | 3031 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 53,447 psi | 82% | 3068 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,590 psi | 79% | 3041 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,517 psi | 78% | 2989 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 46,021 psi | 71% | 2940 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,985 psi | 58% | 2769 fps | 95.6% |
| Lovex S070 | <<locked>> | 84% | 41,191 psi | 63% | 2861 fps | 95.4% |
| Lovex S071 | <<locked>> | 98% | 39,015 psi | 60% | 2841 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 50,256 psi | 77% | 3012 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,879 psi | 78% | 3012 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,325 psi | 71% | 2989 fps | 99.6% |
| Norma 204 | <<locked>> | 90% | 48,066 psi | 74% | 3041 fps | 95.1% |
| Norma MRP | <<locked>> | 94% | 43,221 psi | 66% | 3041 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 34,664 psi | 53% | 2759 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 46,601 psi | 72% | 3009 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 38,406 psi | 59% | 2861 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 53,548 psi | 82% | 3084 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,577 psi | 82% | 3104 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,441 psi | 42% | 1811 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,759 psi | 69% | 2923 fps | 96.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,546 psi | 78% | 3127 fps | 99.7% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,872 psi | 63% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,389 psi | 53% | 2772 fps | 95.4% |
| ReloadSwiss RS 70 | 55.8 gr | 82% | 36,129 psi | 56% | 2838 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 54,491 psi | 84% | 3048 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,950 psi | 74% | 2959 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,524 psi | 64% | 2877 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 52,214 psi | 80% | 3084 fps | 95% |
| Rottweil R 905 | <<locked>> | 96% | 48,776 psi | 75% | 3077 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 84% | 44,382 psi | 68% | 2907 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,985 psi | 58% | 2769 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,590 psi | 79% | 3041 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,021 psi | 71% | 2940 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 41,191 psi | 63% | 2861 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,569 psi | 65% | 2930 fps | 99.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,257 psi | 80% | 3061 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,951 psi | 77% | 3031 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,082 psi | 79% | 2946 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,033 psi | 66% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 42,424 psi | 65% | 2825 fps | 95.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 48,327 psi | 74% | 3074 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 50,952 psi | 78% | 2943 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,054 psi | 80% | 3054 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 41,901 psi | 64% | 2877 fps | 99.3% |
| Somchem S365 | <<locked>> | 80% | 31,053 psi | 48% | 2703 fps | 98% |
| Somchem S385 | <<locked>> | 92% | 43,308 psi | 67% | 2933 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 51,576 psi | 79% | 2930 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,805 psi | 74% | 2927 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,341 psi | 74% | 2943 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,089 psi | 62% | 2805 fps | 99.7% |
| Vihtavuori N160 | <<locked>> | 80% | 35,940 psi | 55% | 2759 fps | 96.2% |
| Vihtavuori N165 | <<locked>> | 98% | 45,513 psi | 70% | 2966 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 53,925 psi | 83% | 3068 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,572 psi | 72% | 2927 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,447 psi | 55% | 2756 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 84% | 30,864 psi | 47% | 2694 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,389 psi | 54% | 2730 fps | 98.3% |
| Winchester 748 | <<locked>> | 80% | 54,418 psi | 84% | 3120 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 42,047 psi | 65% | 2940 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,558 psi | 44% | 2700 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,850 psi | 77% | 3038 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 49,559 psi | 76% | 3045 fps | 95.7% |
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 | 120gr | Hornady SST. ReloadSwiss RS 70 delivers the highest muzzle velocity at 3,314 fps; across all powders the maximum-charge window runs from 1,975 fps to 3,314 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 55–90 %, leaving at least 10 % headroom. The 120.0 gr projectile in 0.277" calls for a 1:10.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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. ReloadSwiss RS 70, Alliant Reloder-17, Alliant Reloder-16 rank at the top here: for 6.8 Western with the .277 | 120gr | Hornady SST 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.