Load Specifications
Bullet Manufacturer:Sierra
Bullet Weight:115 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:1:13.5
Load data in caliber 6.8 Western with .277 | 115gr | Sierra MatchKing bullet and 102 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-16 and Hodgdon Superformance.
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 2015 | <<locked>> | 82% | 58,276 psi | 90% | 3117 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 58,247 psi | 90% | 3146 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 56,246 psi | 87% | 3150 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 49,574 psi | 76% | 3110 fps | 98% |
| Accurate 4064 | <<locked>> | 88% | 58,523 psi | 90% | 3202 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 55,419 psi | 85% | 3245 fps | 99.7% |
| ADI AR 2206H | <<locked>> | 84% | 57,667 psi | 89% | 3235 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 55,274 psi | 85% | 3179 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 56,942 psi | 88% | 3284 fps | 96.9% |
| ADI Benchmark 8208 | <<locked>> | 82% | 56,304 psi | 87% | 3176 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 58,073 psi | 89% | 3150 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 58,436 psi | 90% | 3376 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,652 psi | 87% | 3278 fps | 97% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 56,652 psi | 87% | 3278 fps | 97% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 55,970 psi | 86% | 3205 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 56,202 psi | 86% | 3228 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,202 psi | 86% | 3310 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 92% | 57,609 psi | 89% | 3340 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 55,811 psi | 86% | 3268 fps | 96.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 46,499 psi | 72% | 3136 fps | 99.8% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 40,828 psi | 63% | 3025 fps | 96.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 53,432 psi | 82% | 3343 fps | 99.7% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,957 psi | 89% | 3251 fps | 99.9% |
| Bofors RP3 | <<locked>> | 88% | 56,724 psi | 87% | 3222 fps | 100% |
| Bofors RP7 | <<locked>> | 92% | 56,376 psi | 87% | 3192 fps | 97.8% |
| Hodgdon Benchmark | <<locked>> | 82% | 57,638 psi | 89% | 3156 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 56,420 psi | 87% | 3209 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,246 psi | 88% | 3235 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 94% | 57,914 psi | 89% | 3301 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 92% | 57,943 psi | 89% | 3261 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 58,276 psi | 90% | 3245 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,318 psi | 87% | 3225 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 58,653 psi | 90% | 3281 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 58,552 psi | 90% | 3343 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,998 psi | 55% | 2021 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 55,738 psi | 86% | 3189 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,100 psi | 85% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 58,189 psi | 90% | 3219 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,885 psi | 89% | 3199 fps | 98.5% |
| IMR 4350 | <<locked>> | 96% | 57,261 psi | 88% | 3225 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,102 psi | 89% | 3228 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 55,883 psi | 86% | 3235 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 57,682 psi | 89% | 3261 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 56,304 psi | 87% | 3176 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 58,233 psi | 90% | 3209 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 56,478 psi | 87% | 3150 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 58,508 psi | 90% | 3212 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,030 psi | 89% | 3222 fps | 99.3% |
| Lovex S070 | <<locked>> | 94% | 55,579 psi | 86% | 3202 fps | 98.4% |
| Norma 201 | <<locked>> | 84% | 56,304 psi | 87% | 3173 fps | 100% |
| Norma 202 | <<locked>> | 84% | 56,971 psi | 88% | 3169 fps | 100% |
| Norma 203B | <<locked>> | 86% | 55,492 psi | 85% | 3212 fps | 100% |
| Norma 204 | <<locked>> | 96% | 58,059 psi | 89% | 3278 fps | 97% |
| Norma MRPᴾ | <<locked>> | 100% | 52,344 psi | 81% | 3284 fps | 97.7% |
| Norma URP | <<locked>> | 96% | 57,725 psi | 89% | 3287 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 56,478 psi | 87% | 3241 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 56,579 psi | 87% | 3281 fps | 99% |
| Ramshot TAC | <<locked>> | 82% | 56,652 psi | 87% | 3196 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,768 psi | 87% | 3219 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,521 psi | 56% | 2067 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,435 psi | 88% | 3215 fps | 98.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 57,188 psi | 88% | 3304 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,348 psi | 88% | 3343 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 55,216 psi | 85% | 3264 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 58,189 psi | 90% | 3363 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 56,942 psi | 88% | 3153 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 56,942 psi | 88% | 3173 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,855 psi | 87% | 3215 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 58,624 psi | 90% | 3251 fps | 96.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 54,882 psi | 84% | 3248 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 92% | 56,376 psi | 87% | 3192 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,030 psi | 89% | 3222 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 84% | 58,233 psi | 90% | 3209 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 58,508 psi | 90% | 3212 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 55,579 psi | 86% | 3202 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 58,566 psi | 90% | 3281 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,419 psi | 85% | 3176 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,173 psi | 86% | 3199 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,174 psi | 88% | 3100 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 58,073 psi | 89% | 3100 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 57,972 psi | 89% | 3166 fps | 98.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 54,389 psi | 84% | 3241 fps | 96.7% |
| Somchem S335 | <<locked>> | 84% | 56,869 psi | 87% | 3097 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,158 psi | 85% | 3163 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 56,666 psi | 87% | 3209 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 56,884 psi | 88% | 3291 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 55,709 psi | 86% | 3222 fps | 97.7% |
| Vihtavuori N133 | <<locked>> | 84% | 57,595 psi | 89% | 3084 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,159 psi | 88% | 3133 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,653 psi | 89% | 3146 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 58,450 psi | 90% | 3186 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,463 psi | 87% | 3225 fps | 99.7% |
| Vihtavuori N530 | <<locked>> | 82% | 56,898 psi | 88% | 3176 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 55,840 psi | 86% | 3140 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,535 psi | 85% | 3228 fps | 99.6% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 51,909 psi | 80% | 3222 fps | 99.8% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 56,652 psi | 87% | 3196 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,450 psi | 88% | 3228 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 58,218 psi | 90% | 3307 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 41,930 psi | 65% | 3169 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 56,405 psi | 87% | 3209 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,344 psi | 81% | 3153 fps | 95.9% |
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 2015 | <<locked>> | 80% | 54,636 psi | 84% | 3064 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 47,935 psi | 74% | 2989 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,238 psi | 71% | 2963 fps | 95.3% |
| Accurate 3100 | <<locked>> | 94% | 40,205 psi | 62% | 2920 fps | 95.6% |
| Accurate 4064 | <<locked>> | 80% | 45,324 psi | 70% | 2989 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 33,953 psi | 52% | 2792 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 50,778 psi | 78% | 3117 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 43,149 psi | 66% | 2946 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 96% | 49,835 psi | 77% | 3153 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 52,852 psi | 81% | 3120 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 54,288 psi | 84% | 3094 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 47,108 psi | 72% | 3166 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,676 psi | 76% | 3146 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 49,676 psi | 76% | 3146 fps | 95.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,410 psi | 67% | 2976 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,340 psi | 71% | 3045 fps | 99.1% |
| Alliant Reloder-16 | 50.6 gr | 80% | 33,533 psi | 52% | 2802 fps | 95.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,753 psi | 58% | 2946 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 96% | 49,008 psi | 75% | 3136 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,660 psi | 46% | 2703 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 98% | 38,276 psi | 59% | 2959 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 90% | 36,956 psi | 57% | 2972 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,604 psi | 78% | 3123 fps | 99.4% |
| Bofors RP3 | <<locked>> | 80% | 43,511 psi | 67% | 2986 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 46,717 psi | 72% | 3015 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,157 psi | 83% | 3100 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,649 psi | 81% | 3146 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,903 psi | 68% | 2986 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 86% | 44,367 psi | 68% | 3045 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 86% | 47,587 psi | 73% | 3068 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 51,300 psi | 79% | 3130 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,067 psi | 48% | 2694 fps | 96.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,790 psi | 74% | 3100 fps | 99.9% |
| Hodgdon Superformance | 62 gr | 86% | 43,801 psi | 67% | 3054 fps | 95.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,789 psi | 41% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,023 psi | 75% | 3071 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 51,735 psi | 80% | 3117 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,353 psi | 70% | 2989 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,674 psi | 73% | 3012 fps | 96.6% |
| IMR 4350 | <<locked>> | 88% | 44,367 psi | 68% | 2982 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 82% | 42,627 psi | 66% | 2927 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 35,230 psi | 54% | 2812 fps | 95.8% |
| IMR 4895 | <<locked>> | 80% | 47,514 psi | 73% | 3081 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 52,852 psi | 81% | 3120 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 50,821 psi | 78% | 3094 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,038 psi | 77% | 3041 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 45,469 psi | 70% | 2989 fps | 99.8% |
| Lovex S065 | <<locked>> | 80% | 37,536 psi | 58% | 2808 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 43,265 psi | 67% | 2963 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 49,734 psi | 77% | 3061 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,328 psi | 77% | 3064 fps | 100% |
| Norma 203B | <<locked>> | 80% | 45,701 psi | 70% | 3031 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 50,836 psi | 78% | 3150 fps | 95.4% |
| Norma MRP | <<locked>> | 96% | 45,498 psi | 70% | 3146 fps | 96% |
| Norma URP | <<locked>> | 80% | 33,953 psi | 52% | 2792 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 45,832 psi | 71% | 3051 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 40,466 psi | 62% | 2963 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 53,026 psi | 82% | 3133 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,011 psi | 82% | 3156 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,340 psi | 42% | 1854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,164 psi | 68% | 2966 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 49,734 psi | 77% | 3173 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,161 psi | 62% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 36,274 psi | 56% | 2874 fps | 95.7% |
| ReloadSwiss RS 70 | 58.2 gr | 84% | 38,247 psi | 59% | 2946 fps | 95.8% |
| Rottweil R 901 | <<locked>> | 80% | 53,722 psi | 83% | 3100 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,224 psi | 73% | 3005 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 40,756 psi | 63% | 2917 fps | 99% |
| Rottweil R 904 | <<locked>> | 98% | 54,868 psi | 84% | 3186 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 96% | 47,921 psi | 74% | 3117 fps | 95.1% |
| Rottweil R 907 | <<locked>> | 86% | 46,717 psi | 72% | 3015 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,536 psi | 58% | 2808 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 50,821 psi | 78% | 3094 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,469 psi | 70% | 2989 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 43,265 psi | 67% | 2963 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,916 psi | 64% | 2976 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,721 psi | 80% | 3110 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 49,327 psi | 76% | 3081 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 50,691 psi | 78% | 3002 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 42,612 psi | 66% | 2848 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 41,843 psi | 64% | 2867 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 50,807 psi | 78% | 3176 fps | 95.8% |
| Somchem S335 | <<locked>> | 80% | 50,430 psi | 78% | 2999 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 51,517 psi | 79% | 3104 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 41,408 psi | 64% | 2923 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 30,545 psi | 47% | 2740 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 45,716 psi | 70% | 3038 fps | 95.5% |
| Vihtavuori N133 | <<locked>> | 80% | 51,126 psi | 79% | 2989 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,297 psi | 73% | 2979 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 47,529 psi | 73% | 2989 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,378 psi | 61% | 2848 fps | 99.5% |
| Vihtavuori N160 | <<locked>> | 80% | 35,418 psi | 54% | 2799 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 53,287 psi | 82% | 3117 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 45,948 psi | 71% | 2976 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 34,896 psi | 54% | 2795 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 86% | 32,474 psi | 50% | 2789 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,012 psi | 54% | 2769 fps | 97.9% |
| Winchester 748 | <<locked>> | 80% | 53,577 psi | 82% | 3166 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 44,367 psi | 68% | 3045 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 29,950 psi | 46% | 2799 fps | 96% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,124 psi | 76% | 3087 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,805 psi | 75% | 3087 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 102 powders for 6.8 Western loaded with the .277 | 115gr | Sierra MatchKing. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,376 fps; across all powders the maximum-charge window runs from 2,021 fps to 3,376 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 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 115.0 gr projectile in 0.277" calls for a 1:13.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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-16, Hodgdon Superformance rank at the top here: for 6.8 Western with the .277 | 115gr | Sierra MatchKing 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.