Load Specifications
Bullet:.277 | 122gr | Hasler ARIETE
Bullet Manufacturer:Hasler
Bullet Weight:122 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:1:10.0
Load data in caliber 6.8 Western with .277 | 122gr | Hasler ARIETE bullet and 103 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 2495 | <<locked>> | 86% | 58,711 psi | 90% | 3074 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,145 psi | 88% | 3094 fps | 98.2% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,299 psi | 77% | 3058 fps | 98.6% |
| Accurate 4064 | <<locked>> | 86% | 55,347 psi | 85% | 3077 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,231 psi | 87% | 3182 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 58,537 psi | 90% | 3169 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,173 psi | 86% | 3117 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 58,015 psi | 89% | 3232 fps | 97.7% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,145 psi | 88% | 3110 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,361 psi | 85% | 3245 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 56,666 psi | 87% | 3140 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,130 psi | 88% | 3166 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 96% | 57,261 psi | 88% | 3248 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 54,940 psi | 85% | 3219 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 56,927 psi | 88% | 3212 fps | 97.6% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 50,299 psi | 77% | 3140 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,355 psi | 73% | 3081 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,394 psi | 64% | 2979 fps | 97.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 54,810 psi | 84% | 3287 fps | 99.9% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 58,784 psi | 90% | 3189 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 57,653 psi | 89% | 3159 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 50,299 psi | 77% | 3140 fps | 96.5% |
| Bofors RP7 | <<locked>> | 92% | 56,956 psi | 88% | 3133 fps | 98.4% |
| Hodgdon Benchmark | <<locked>> | 82% | 58,450 psi | 90% | 3091 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,043 psi | 88% | 3140 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 58,276 psi | 90% | 3176 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 55,187 psi | 85% | 3179 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 90% | 55,158 psi | 85% | 3140 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 82% | 55,506 psi | 85% | 3120 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 57,696 psi | 89% | 3166 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 55,811 psi | 86% | 3159 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,666 psi | 86% | 3219 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,056 psi | 55% | 1965 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 56,681 psi | 87% | 3123 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 55,985 psi | 86% | 3100 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,463 psi | 85% | 3097 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 58,523 psi | 90% | 3136 fps | 99% |
| IMR 4350 | <<locked>> | 96% | 58,189 psi | 90% | 3166 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,564 psi | 85% | 3114 fps | 98.5% |
| IMR 4831 | <<locked>> | 96% | 56,782 psi | 87% | 3173 fps | 100% |
| IMR 4895 | <<locked>> | 86% | 58,653 psi | 90% | 3196 fps | 100% |
| IMR 4955 Enduronᴾ | <<locked>> | 100% | 57,421 psi | 88% | 3153 fps | 95.9% |
| IMR 8208 XBR | <<locked>> | 82% | 57,145 psi | 88% | 3110 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,013 psi | 85% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,319 psi | 88% | 3087 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,651 psi | 86% | 3094 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 58,697 psi | 90% | 3159 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 56,550 psi | 87% | 3146 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 41,481 psi | 64% | 2884 fps | 96.7% |
| Norma 201 | <<locked>> | 84% | 56,942 psi | 88% | 3104 fps | 100% |
| Norma 202 | <<locked>> | 84% | 57,798 psi | 89% | 3104 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,391 psi | 87% | 3150 fps | 100% |
| Norma 204 | <<locked>> | 94% | 55,361 psi | 85% | 3163 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 53,505 psi | 82% | 3235 fps | 98.4% |
| Norma URP | <<locked>> | 96% | 58,740 psi | 90% | 3225 fps | 100% |
| Ramshot Big Game | <<locked>> | 86% | 57,406 psi | 88% | 3176 fps | 100% |
| Ramshot Hunter | <<locked>> | 96% | 57,740 psi | 89% | 3225 fps | 99.5% |
| Ramshot TAC | <<locked>> | 82% | 57,334 psi | 88% | 3136 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 82% | 57,464 psi | 88% | 3153 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,579 psi | 56% | 2011 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 58,160 psi | 89% | 3153 fps | 99.3% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 58,088 psi | 89% | 3238 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 58,508 psi | 90% | 3274 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,275 psi | 87% | 3205 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,187 psi | 85% | 3238 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 82% | 57,363 psi | 88% | 3077 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 57,638 psi | 89% | 3107 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 57,522 psi | 88% | 3150 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 55,811 psi | 86% | 3133 fps | 96.2% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 55,985 psi | 86% | 3196 fps | 97.6% |
| Rottweil R 907 | <<locked>> | 92% | 56,956 psi | 88% | 3133 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 94% | 58,697 psi | 90% | 3159 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,013 psi | 85% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,651 psi | 86% | 3094 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,550 psi | 87% | 3146 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 55,767 psi | 86% | 3159 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 55,985 psi | 86% | 3110 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 56,869 psi | 87% | 3133 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 57,914 psi | 89% | 3035 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,506 psi | 85% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,201 psi | 85% | 3054 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 55,492 psi | 85% | 3189 fps | 97.5% |
| Somchem S335 | <<locked>> | 84% | 57,566 psi | 89% | 3028 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 55,854 psi | 86% | 3100 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 57,595 psi | 89% | 3146 fps | 100% |
| Somchem S365 | <<locked>> | 98% | 58,160 psi | 89% | 3228 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,666 psi | 87% | 3169 fps | 98.4% |
| Vihtavuori N133 | <<locked>> | 84% | 58,436 psi | 90% | 3015 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 57,754 psi | 89% | 3061 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 58,581 psi | 90% | 3081 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 55,405 psi | 85% | 3064 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 57,421 psi | 88% | 3166 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 48,849 psi | 75% | 3015 fps | 96.5% |
| Vihtavuori N530 | <<locked>> | 82% | 57,754 psi | 89% | 3110 fps | 100% |
| Vihtavuori N540 | <<locked>> | 86% | 56,710 psi | 87% | 3077 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,666 psi | 87% | 3169 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,837 psi | 81% | 3163 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,769 psi | 89% | 3133 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 58,523 psi | 90% | 3163 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,477 psi | 85% | 3186 fps | 98.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,612 psi | 66% | 3120 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,116 psi | 88% | 3143 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,374 psi | 82% | 3104 fps | 96.9% |
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% | 48,022 psi | 74% | 2917 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,543 psi | 72% | 2904 fps | 96.1% |
| Accurate 3100 | <<locked>> | 92% | 37,753 psi | 58% | 2802 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 45,513 psi | 70% | 2917 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,200 psi | 53% | 2736 fps | 96% |
| ADI AR 2206H | <<locked>> | 80% | 51,430 psi | 79% | 3054 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,671 psi | 67% | 2890 fps | 99% |
| ADI AR 2209 | <<locked>> | 94% | 47,340 psi | 73% | 3035 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,563 psi | 82% | 3054 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,022 psi | 74% | 3114 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 43,671 psi | 67% | 2910 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 46,905 psi | 72% | 2986 fps | 99.5% |
| Alliant Reloder-16 | 50.3 gr | 80% | 33,852 psi | 52% | 2753 fps | 96.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,319 psi | 59% | 2894 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 94% | 46,630 psi | 72% | 3022 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 98% | 46,963 psi | 72% | 3074 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 86% | 29,849 psi | 46% | 2654 fps | 96% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,274 psi | 56% | 2844 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 88% | 34,693 psi | 53% | 2851 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,227 psi | 79% | 3061 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 43,714 psi | 67% | 2917 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 46,963 psi | 72% | 3074 fps | 95.6% |
| Bofors RP7 | <<locked>> | 84% | 44,266 psi | 68% | 2894 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 54,868 psi | 84% | 3035 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,476 psi | 82% | 3081 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,396 psi | 68% | 2927 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 84% | 41,989 psi | 65% | 2923 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 84% | 45,339 psi | 70% | 2953 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 51,982 psi | 80% | 3061 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,299 psi | 48% | 2641 fps | 96.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,588 psi | 75% | 3038 fps | 100% |
| Hodgdon Superformance | 60.2 gr | 84% | 41,365 psi | 64% | 2936 fps | 95% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,745 psi | 41% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,748 psi | 77% | 3009 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,257 psi | 80% | 3045 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 45,919 psi | 71% | 2930 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,283 psi | 74% | 2956 fps | 97.3% |
| IMR 4350 | <<locked>> | 86% | 42,235 psi | 65% | 2871 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,451 psi | 62% | 2812 fps | 95% |
| IMR 4831 | <<locked>> | 80% | 32,996 psi | 51% | 2687 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 48,138 psi | 74% | 3018 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 98% | 53,824 psi | 83% | 3091 fps | 95.1% |
| IMR 8208 XBR | <<locked>> | 80% | 53,563 psi | 82% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,474 psi | 79% | 3025 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,647 psi | 78% | 2979 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 45,905 psi | 71% | 2927 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 37,768 psi | 58% | 2756 fps | 95.8% |
| Lovex S070 | <<locked>> | 84% | 40,973 psi | 63% | 2848 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 38,841 psi | 60% | 2828 fps | 95.9% |
| Norma 201 | <<locked>> | 80% | 50,183 psi | 77% | 2995 fps | 100% |
| Norma 202 | <<locked>> | 80% | 50,691 psi | 78% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,282 psi | 71% | 2972 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 48,051 psi | 74% | 3028 fps | 95.4% |
| Norma MRP | <<locked>> | 94% | 43,265 psi | 67% | 3028 fps | 96% |
| Norma URP | <<locked>> | 80% | 34,330 psi | 53% | 2736 fps | 95.9% |
| Ramshot Big Game | <<locked>> | 80% | 46,630 psi | 72% | 2995 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 38,261 psi | 59% | 2844 fps | 95.5% |
| Ramshot TAC | <<locked>> | 80% | 53,563 psi | 82% | 3071 fps | 99.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 53,635 psi | 83% | 3091 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,282 psi | 42% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,686 psi | 69% | 2910 fps | 97.1% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 50,647 psi | 78% | 3114 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 40,814 psi | 63% | 2963 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,142 psi | 53% | 2753 fps | 95.6% |
| ReloadSwiss RS 70 | 56.4 gr | 82% | 35,926 psi | 55% | 2822 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 53,983 psi | 83% | 3028 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 47,558 psi | 73% | 2940 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,089 psi | 63% | 2858 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 96% | 52,199 psi | 80% | 3071 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 94% | 45,716 psi | 70% | 3005 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 84% | 44,266 psi | 68% | 2894 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 37,768 psi | 58% | 2756 fps | 95.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,474 psi | 79% | 3025 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 45,905 psi | 71% | 2927 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 40,973 psi | 63% | 2848 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,540 psi | 65% | 2917 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,185 psi | 80% | 3045 fps | 99.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,038 psi | 77% | 3018 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,198 psi | 79% | 2933 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,047 psi | 66% | 2785 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,508 psi | 61% | 2749 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,281 psi | 70% | 2999 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 50,908 psi | 78% | 2930 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,083 psi | 80% | 3038 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 41,756 psi | 64% | 2861 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 30,792 psi | 47% | 2684 fps | 98.1% |
| Somchem S385 | <<locked>> | 92% | 43,308 psi | 67% | 2923 fps | 95.4% |
| Vihtavuori N133 | <<locked>> | 80% | 51,750 psi | 80% | 2920 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 47,805 psi | 74% | 2913 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,124 psi | 74% | 2923 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 39,755 psi | 61% | 2789 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 35,810 psi | 55% | 2743 fps | 96.4% |
| Vihtavuori N165 | <<locked>> | 98% | 45,600 psi | 70% | 2953 fps | 95.7% |
| Vihtavuori N530 | <<locked>> | 80% | 53,766 psi | 83% | 3051 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 46,499 psi | 72% | 2910 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,244 psi | 54% | 2740 fps | 96% |
| Vihtavuori N555 | <<locked>> | 84% | 30,530 psi | 47% | 2671 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,201 psi | 54% | 2713 fps | 98.5% |
| Winchester 748 | <<locked>> | 80% | 54,534 psi | 84% | 3104 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 41,989 psi | 65% | 2923 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,108 psi | 43% | 2677 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,864 psi | 77% | 3025 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,079 psi | 71% | 2969 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 117 powders for 6.8 Western loaded with the .277 | 122gr | Hasler ARIETE. Alliant Reloder-26 delivers the highest muzzle velocity at 3,287 fps; across all powders the maximum-charge window runs from 1,965 fps to 3,287 fps. Accurate 3100 gives the best case fill at 100 %, and 117 of the 117 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 122.0 gr projectile in 0.277" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, 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-16, Hodgdon Superformance rank at the top here: for 6.8 Western with the .277 | 122gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Hodgdon H1000 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.