Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:129 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:1:9.5
Load data in caliber 6.8 Western with .277 | 129gr | Peregrine VLR-5 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 60, Hodgdon H414 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% | 56,681 psi | 87% | 2966 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 56,188 psi | 86% | 2992 fps | 98.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,373 psi | 81% | 3018 fps | 99.2% |
| Accurate 4064 | <<locked>> | 86% | 56,985 psi | 88% | 3022 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 58,305 psi | 90% | 3136 fps | 100% |
| ADI AR 2206H | <<locked>> | 82% | 56,521 psi | 87% | 3058 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 57,609 psi | 89% | 3061 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 56,072 psi | 86% | 3127 fps | 97.9% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 53,693 psi | 83% | 3110 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 82% | 58,784 psi | 90% | 3054 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,203 psi | 88% | 3196 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 58,494 psi | 90% | 3087 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 58,697 psi | 90% | 3110 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,637 psi | 86% | 3143 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 57,014 psi | 88% | 3169 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 55,172 psi | 85% | 3110 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 52,359 psi | 81% | 3107 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 49,269 psi | 76% | 3041 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,772 psi | 66% | 2946 fps | 98.4% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 57,159 psi | 88% | 3248 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,724 psi | 87% | 3077 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,877 psi | 74% | 3022 fps | 96.3% |
| Bofors RP3 | <<locked>> | 86% | 55,550 psi | 85% | 3048 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 52,359 psi | 81% | 3107 fps | 97.5% |
| Bofors RP7 | <<locked>> | 90% | 55,129 psi | 85% | 3031 fps | 98.5% |
| Hodgdon H380 | <<locked>> | 86% | 56,115 psi | 86% | 3064 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 92% | 57,058 psi | 88% | 3136 fps | 99.2% |
| Hodgdon H4350 | <<locked>> | 90% | 56,826 psi | 87% | 3094 fps | 98.3% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,609 psi | 89% | 3120 fps | 96.3% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 56,376 psi | 87% | 3100 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 82% | 57,145 psi | 88% | 3068 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,767 psi | 86% | 3061 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,479 psi | 88% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 57,899 psi | 89% | 3182 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,245 psi | 56% | 1913 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 58,334 psi | 90% | 3071 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 57,783 psi | 89% | 3041 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,101 psi | 88% | 3045 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,463 psi | 87% | 3028 fps | 99.1% |
| IMR 4350 | <<locked>> | 94% | 56,231 psi | 87% | 3064 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 57,014 psi | 88% | 3064 fps | 99.1% |
| IMR 4831 | <<locked>> | 96% | 58,769 psi | 90% | 3127 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,434 psi | 87% | 3081 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 55,535 psi | 85% | 3051 fps | 96.1% |
| IMR 8208 XBR | <<locked>> | 82% | 58,784 psi | 90% | 3054 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 56,898 psi | 88% | 3028 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 58,798 psi | 90% | 3031 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,101 psi | 88% | 3035 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,884 psi | 88% | 3054 fps | 99.7% |
| Lovex S070 | <<locked>> | 94% | 58,276 psi | 90% | 3100 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,178 psi | 66% | 2851 fps | 97.7% |
| Norma 201 | <<locked>> | 84% | 58,581 psi | 90% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 82% | 55,724 psi | 86% | 2992 fps | 100% |
| Norma 203B | <<locked>> | 86% | 57,914 psi | 89% | 3094 fps | 100% |
| Norma 204 | <<locked>> | 94% | 57,217 psi | 88% | 3120 fps | 97.9% |
| Norma MRPᴾ | <<locked>> | 100% | 55,825 psi | 86% | 3202 fps | 99.2% |
| Norma URP | <<locked>> | 94% | 57,130 psi | 88% | 3123 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,172 psi | 85% | 3064 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 51,184 psi | 79% | 3091 fps | 96% |
| Ramshot Hunter | <<locked>> | 94% | 55,956 psi | 86% | 3120 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,440 psi | 70% | 2953 fps | 96.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,811 psi | 57% | 1959 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,101 psi | 86% | 3048 fps | 99.4% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,231 psi | 87% | 3130 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 56,623 psi | 87% | 3163 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 58,494 psi | 90% | 3163 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 57,305 psi | 88% | 3199 fps | 100% |
| Rottweil R 902 | <<locked>> | 84% | 55,579 psi | 86% | 2995 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,666 psi | 86% | 3041 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,638 psi | 89% | 3094 fps | 97.1% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 58,102 psi | 89% | 3156 fps | 98.4% |
| Rottweil R 907 | <<locked>> | 90% | 55,129 psi | 85% | 3031 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,884 psi | 88% | 3054 fps | 99.7% |
| Shooters World Match Rifle | <<locked>> | 82% | 56,898 psi | 88% | 3028 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,101 psi | 88% | 3035 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 58,276 psi | 90% | 3100 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,508 psi | 88% | 3107 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 57,870 psi | 89% | 3064 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 58,668 psi | 90% | 3081 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 55,869 psi | 86% | 2927 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,826 psi | 87% | 2927 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,724 psi | 87% | 3005 fps | 99.1% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 57,609 psi | 89% | 3150 fps | 98.3% |
| Somchem S335 | <<locked>> | 82% | 55,477 psi | 85% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,696 psi | 89% | 3051 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,738 psi | 86% | 3038 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,796 psi | 86% | 3025 fps | 95.9% |
| Somchem S365 | <<locked>> | 96% | 56,420 psi | 87% | 3123 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 58,769 psi | 90% | 3130 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 56,463 psi | 87% | 2907 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 55,941 psi | 86% | 2953 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,565 psi | 87% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 57,305 psi | 88% | 3015 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,738 psi | 86% | 3061 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,778 psi | 78% | 2982 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 86% | 58,218 psi | 90% | 3018 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 58,262 psi | 90% | 3120 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,998 psi | 85% | 3120 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 56,231 psi | 87% | 3189 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 55,376 psi | 85% | 3025 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 57,363 psi | 88% | 3143 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 44,498 psi | 68% | 3094 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,042 psi | 85% | 3031 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,201 psi | 85% | 3061 fps | 97.7% |
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% | 49,617 psi | 76% | 2864 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 43,047 psi | 66% | 2756 fps | 95.8% |
| Accurate 3100 | <<locked>> | 90% | 36,796 psi | 57% | 2713 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 47,050 psi | 72% | 2867 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 35,636 psi | 55% | 2707 fps | 97.1% |
| ADI AR 2206H | <<locked>> | 80% | 52,953 psi | 81% | 3002 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 44,947 psi | 69% | 2844 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 45,672 psi | 70% | 2936 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 98% | 50,082 psi | 77% | 3045 fps | 95.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 55,085 psi | 85% | 2999 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,574 psi | 76% | 3064 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,092 psi | 69% | 2864 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,399 psi | 74% | 2940 fps | 99.8% |
| Alliant Reloder-16 | 49.8 gr | 80% | 34,998 psi | 54% | 2720 fps | 97.2% |
| Alliant Reloder-17 | <<locked>> | 80% | 39,798 psi | 61% | 2858 fps | 99.6% |
| Alliant Reloder-19 | <<locked>> | 92% | 45,353 psi | 70% | 2927 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 96% | 45,600 psi | 70% | 2979 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 82% | 27,093 psi | 42% | 2503 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 94% | 35,172 psi | 54% | 2756 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 86% | 33,518 psi | 52% | 2756 fps | 95.9% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,910 psi | 81% | 3015 fps | 99.9% |
| Bofors RP15 | <<locked>> | 98% | 44,686 psi | 69% | 2956 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 45,223 psi | 70% | 2874 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 45,600 psi | 70% | 2979 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 39,914 psi | 61% | 2733 fps | 95% |
| Hodgdon H380 | <<locked>> | 80% | 45,847 psi | 71% | 2884 fps | 99% |
| Hodgdon H414 | 53.8 gr | 82% | 40,495 psi | 62% | 2822 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 82% | 43,656 psi | 67% | 2851 fps | 95.4% |
| Hodgdon H4831 | <<locked>> | 98% | 53,766 psi | 83% | 3058 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 98% | 52,605 psi | 81% | 3035 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 53,534 psi | 82% | 3012 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 32,474 psi | 50% | 2612 fps | 97.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,314 psi | 77% | 2992 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 39,784 psi | 61% | 2835 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,847 psi | 41% | 1706 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,169 psi | 79% | 2959 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 54,215 psi | 83% | 2992 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,253 psi | 73% | 2881 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,617 psi | 76% | 2910 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 40,712 psi | 63% | 2769 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,640 psi | 64% | 2772 fps | 96.1% |
| IMR 4831 | <<locked>> | 80% | 34,272 psi | 53% | 2657 fps | 96.8% |
| IMR 4895 | <<locked>> | 80% | 49,676 psi | 76% | 2969 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 96% | 52,011 psi | 80% | 2989 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 55,085 psi | 85% | 2999 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 52,924 psi | 81% | 2969 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 51,953 psi | 80% | 2927 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,311 psi | 73% | 2874 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,957 psi | 60% | 2717 fps | 96.8% |
| Lovex S070 | <<locked>> | 82% | 39,610 psi | 61% | 2749 fps | 95.8% |
| Lovex S071 | <<locked>> | 94% | 35,389 psi | 54% | 2680 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 51,619 psi | 79% | 2943 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,185 psi | 80% | 2940 fps | 100% |
| Norma 203B | <<locked>> | 80% | 47,776 psi | 74% | 2927 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 46,398 psi | 71% | 2927 fps | 95.6% |
| Norma MRP | <<locked>> | 90% | 38,972 psi | 60% | 2864 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 35,621 psi | 55% | 2703 fps | 97% |
| Ramshot Big Game | <<locked>> | 80% | 48,051 psi | 74% | 2946 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 47,601 psi | 73% | 3022 fps | 95% |
| Ramshot Hunter | <<locked>> | 82% | 37,173 psi | 57% | 2753 fps | 95.7% |
| Ramshot Magnum | <<locked>> | 98% | 42,293 psi | 65% | 2884 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,412 psi | 42% | 1752 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 45,890 psi | 71% | 2867 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,199 psi | 80% | 3061 fps | 100% |
| ReloadSwiss RS 60 | 53.7 gr | 80% | 42,395 psi | 65% | 2920 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,418 psi | 54% | 2720 fps | 96.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 34,679 psi | 53% | 2726 fps | 95.9% |
| Rottweil R 902 | <<locked>> | 80% | 48,936 psi | 75% | 2887 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 42,525 psi | 65% | 2815 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 94% | 50,647 psi | 78% | 2976 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 92% | 44,208 psi | 68% | 2904 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 39,914 psi | 61% | 2733 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,957 psi | 60% | 2717 fps | 96.8% |
| Shooters World Match Rifle | <<locked>> | 80% | 52,924 psi | 81% | 2969 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,311 psi | 73% | 2874 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 39,610 psi | 61% | 2749 fps | 95.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 43,845 psi | 67% | 2871 fps | 99.6% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 53,882 psi | 83% | 3002 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,300 psi | 79% | 2969 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,489 psi | 81% | 2877 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,266 psi | 68% | 2733 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,087 psi | 59% | 2654 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 43,801 psi | 67% | 2900 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 52,272 psi | 80% | 2874 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,809 psi | 83% | 2992 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,091 psi | 66% | 2818 fps | 99.8% |
| Somchem S361 | <<locked>> | 94% | 52,301 psi | 80% | 2966 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 32,053 psi | 49% | 2654 fps | 98.9% |
| Somchem S385 | <<locked>> | 90% | 41,916 psi | 64% | 2828 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 53,084 psi | 82% | 2861 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,269 psi | 76% | 2854 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,574 psi | 76% | 2871 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,060 psi | 63% | 2743 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,115 psi | 57% | 2710 fps | 97.4% |
| Vihtavuori N165 | <<locked>> | 94% | 41,249 psi | 63% | 2799 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 47,950 psi | 74% | 2861 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,564 psi | 56% | 2707 fps | 97.1% |
| Vihtavuori N555 | <<locked>> | 82% | 29,704 psi | 46% | 2585 fps | 95.4% |
| Vihtavuori N560 | <<locked>> | 98% | 52,214 psi | 80% | 3117 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,477 psi | 56% | 2680 fps | 99.2% |
| Winchester 760 | <<locked>> | 80% | 38,014 psi | 58% | 2762 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 86% | 27,282 psi | 42% | 2595 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,532 psi | 79% | 2979 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 44,556 psi | 69% | 2874 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 113 powders for 6.8 Western loaded with the .277 | 129gr | Peregrine VLR-5. Alliant Reloder-26 delivers the highest muzzle velocity at 3,248 fps; across all powders the maximum-charge window runs from 1,913 fps to 3,248 fps. Accurate 3100 gives the best case fill at 100 %, and 113 of the 113 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (448 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 129.0 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. ReloadSwiss RS 60, Hodgdon H414, Alliant Reloder-16 rank at the top here: for 6.8 Western with the .277 | 129gr | Peregrine VLR-5 they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2225, Baschieri & Pellagri 109 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.