Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:150 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.62 UKM load data
Case Length (l3):2.244"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:95.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:11.0
Load data in caliber 7.62 UKM with .308 | 150gr | Peregrine Glider GRM bullet and 97 powders. The key underlying parameters are shown in the table above.
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% | 55,274 psi | 87% | 3012 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 57,479 psi | 90% | 3084 fps | 98.4% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,937 psi | 80% | 3051 fps | 98.8% |
| Accurate 4064 | <<locked>> | 86% | 55,811 psi | 87% | 3068 fps | 100% |
| Accurate 4350 | <<locked>> | 94% | 56,942 psi | 89% | 3176 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,289 psi | 88% | 3264 fps | 96.7% |
| ADI AR 2206H | <<locked>> | 82% | 55,317 psi | 87% | 3104 fps | 100% |
| ADI AR 2208 | <<locked>> | 88% | 56,608 psi | 89% | 3107 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 54,723 psi | 86% | 3159 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 57,580 psi | 90% | 3100 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 55,927 psi | 88% | 3238 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 88% | 57,203 psi | 90% | 3130 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 57,392 psi | 90% | 3153 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 54,288 psi | 85% | 3182 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 55,477 psi | 87% | 3209 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 57,595 psi | 90% | 3205 fps | 97.8% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 3136 fps | 96.7% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 3074 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 41,858 psi | 66% | 2976 fps | 97.7% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,550 psi | 87% | 3281 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 55,332 psi | 87% | 3117 fps | 99.9% |
| Bofors RP3 | <<locked>> | 86% | 54,302 psi | 85% | 3087 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,039 psi | 80% | 3136 fps | 96.7% |
| Bofors RP7 | <<locked>> | 92% | 57,653 psi | 90% | 3127 fps | 98.6% |
| Hodgdon BL-C2 | <<locked>> | 82% | 57,609 psi | 90% | 3130 fps | 100% |
| Hodgdon H380 | <<locked>> | 86% | 54,839 psi | 86% | 3104 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 55,637 psi | 87% | 3173 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 90% | 55,593 psi | 87% | 3133 fps | 97.7% |
| Hodgdon H4895 | <<locked>> | 82% | 55,927 psi | 88% | 3114 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 54,404 psi | 85% | 3100 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 56,202 psi | 88% | 3150 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 56,391 psi | 88% | 3215 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,969 psi | 56% | 1959 fps | 100% |
| Hodgdon VARGET | <<locked>> | 84% | 57,000 psi | 89% | 3114 fps | 100% |
| IMR 3031 | <<locked>> | 82% | 56,521 psi | 89% | 3091 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 55,883 psi | 88% | 3087 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 55,259 psi | 87% | 3068 fps | 98.6% |
| IMR 4350 | <<locked>> | 94% | 55,027 psi | 86% | 3100 fps | 98.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 55,912 psi | 88% | 3100 fps | 98.7% |
| IMR 4831 | <<locked>> | 96% | 57,421 psi | 90% | 3166 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 55,419 psi | 87% | 3130 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 57,580 psi | 90% | 3100 fps | 100% |
| Lovex D073.6 | <<locked>> | 82% | 55,622 psi | 87% | 3074 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 57,580 psi | 90% | 3074 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 55,985 psi | 88% | 3081 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 55,579 psi | 87% | 3094 fps | 99.5% |
| Lovex S070 | <<locked>> | 94% | 56,985 psi | 89% | 3136 fps | 99% |
| Lovex S071ᴾ | <<locked>> | 100% | 42,047 psi | 66% | 2881 fps | 96.9% |
| Norma 201 | <<locked>> | 84% | 57,334 psi | 90% | 3097 fps | 100% |
| Norma 202 | <<locked>> | 82% | 54,592 psi | 86% | 3041 fps | 100% |
| Norma 203B | <<locked>> | 86% | 56,652 psi | 89% | 3136 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,057 psi | 88% | 3156 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 54,346 psi | 85% | 3232 fps | 98.7% |
| Norma URP | <<locked>> | 94% | 55,709 psi | 87% | 3159 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 84% | 53,983 psi | 85% | 3107 fps | 100% |
| Ramshot Hunter | <<locked>> | 94% | 54,723 psi | 86% | 3159 fps | 99.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,506 psi | 57% | 2005 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 55,013 psi | 86% | 3091 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 54,810 psi | 86% | 3169 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,100 psi | 86% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 57,072 psi | 89% | 3199 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 55,854 psi | 88% | 3232 fps | 99.9% |
| Rottweil R 902 | <<locked>> | 84% | 54,534 psi | 85% | 3045 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 54,404 psi | 85% | 3084 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 56,391 psi | 88% | 3130 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 56,710 psi | 89% | 3189 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 92% | 57,653 psi | 90% | 3127 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 92% | 55,579 psi | 87% | 3094 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 82% | 55,622 psi | 87% | 3074 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 55,985 psi | 88% | 3081 fps | 100% |
| Shooters World SW4350 | <<locked>> | 94% | 56,985 psi | 89% | 3136 fps | 99% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 56,260 psi | 88% | 3150 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 82% | 56,536 psi | 89% | 3104 fps | 99.8% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 57,363 psi | 90% | 3127 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 54,766 psi | 86% | 2976 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 55,767 psi | 87% | 2976 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 55,579 psi | 87% | 3045 fps | 98.7% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,202 psi | 88% | 3182 fps | 97.7% |
| Somchem S335 | <<locked>> | 82% | 54,360 psi | 85% | 2969 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 56,275 psi | 88% | 3091 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 54,404 psi | 85% | 3081 fps | 100% |
| Somchem S365 | <<locked>> | 96% | 54,853 psi | 86% | 3163 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 57,435 psi | 90% | 3163 fps | 98.6% |
| Vihtavuori N133 | <<locked>> | 82% | 55,347 psi | 87% | 2956 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 54,708 psi | 86% | 3002 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 55,216 psi | 87% | 3018 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,043 psi | 88% | 3058 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 54,273 psi | 85% | 3097 fps | 99.8% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 49,472 psi | 78% | 3012 fps | 96.8% |
| Vihtavuori N540 | <<locked>> | 86% | 57,014 psi | 89% | 3064 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 57,014 psi | 89% | 3159 fps | 99.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 3156 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,259 psi | 85% | 3068 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,854 psi | 88% | 3176 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,250 psi | 68% | 3120 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,725 psi | 90% | 3136 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 3097 fps | 97.1% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 48,341 psi | 76% | 2907 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 46,949 psi | 74% | 2900 fps | 96.3% |
| Accurate 3100 | <<locked>> | 92% | 38,276 psi | 60% | 2799 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 45,832 psi | 72% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 34,592 psi | 54% | 2733 fps | 96.2% |
| Accurate High Country | <<locked>> | 98% | 52,257 psi | 82% | 3196 fps | 95.8% |
| ADI AR 2206H | <<locked>> | 80% | 51,851 psi | 81% | 3045 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 43,918 psi | 69% | 2881 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 94% | 47,790 psi | 75% | 3031 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 53,983 psi | 85% | 3045 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 48,341 psi | 76% | 3100 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 44,092 psi | 69% | 2907 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 47,326 psi | 74% | 2979 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 80% | 34,185 psi | 54% | 2749 fps | 96.3% |
| Alliant Reloder-17 | <<locked>> | 80% | 38,754 psi | 61% | 2890 fps | 99.2% |
| Alliant Reloder-19 | <<locked>> | 94% | 47,181 psi | 74% | 3018 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 98% | 47,456 psi | 74% | 3068 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 84% | 28,181 psi | 44% | 2589 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 96% | 36,651 psi | 57% | 2844 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 88% | 35,172 psi | 55% | 2851 fps | 96.1% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 51,663 psi | 81% | 3054 fps | 99.7% |
| Bofors RP3 | <<locked>> | 80% | 44,266 psi | 69% | 2913 fps | 99.9% |
| Bofors RP5 | <<locked>> | 98% | 47,456 psi | 74% | 3068 fps | 95.8% |
| Bofors RP7 | <<locked>> | 82% | 41,814 psi | 66% | 2828 fps | 95.1% |
| Hodgdon BL-C2 | <<locked>> | 80% | 53,722 psi | 84% | 3071 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 44,860 psi | 70% | 2923 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 82% | 39,595 psi | 62% | 2854 fps | 95% |
| Hodgdon H4350 | <<locked>> | 84% | 45,701 psi | 72% | 2946 fps | 95.4% |
| Hodgdon H4895 | <<locked>> | 80% | 52,417 psi | 82% | 3054 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 31,604 psi | 50% | 2638 fps | 97.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 48,979 psi | 77% | 3031 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 41,669 psi | 65% | 2930 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,876 psi | 42% | 1755 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,212 psi | 79% | 3002 fps | 100% |
| IMR 3031 | <<locked>> | 80% | 52,750 psi | 83% | 3035 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,180 psi | 72% | 2920 fps | 99.5% |
| IMR 4166 Enduron | <<locked>> | 80% | 48,617 psi | 76% | 2949 fps | 97.5% |
| IMR 4350 | <<locked>> | 86% | 42,583 psi | 67% | 2864 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 40,669 psi | 64% | 2805 fps | 95.2% |
| IMR 4831 | <<locked>> | 80% | 33,460 psi | 52% | 2687 fps | 95.9% |
| IMR 4895 | <<locked>> | 80% | 48,559 psi | 76% | 3012 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 80% | 53,983 psi | 85% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 51,793 psi | 81% | 3015 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 50,879 psi | 80% | 2969 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 46,151 psi | 72% | 2917 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 38,029 psi | 60% | 2746 fps | 96% |
| Lovex S070 | <<locked>> | 82% | 38,754 psi | 61% | 2779 fps | 95% |
| Lovex S071 | <<locked>> | 96% | 36,767 psi | 58% | 2762 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 50,473 psi | 79% | 2986 fps | 100% |
| Norma 202 | <<locked>> | 80% | 51,097 psi | 80% | 2986 fps | 100% |
| Norma 203B | <<locked>> | 80% | 46,702 psi | 73% | 2966 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 48,704 psi | 76% | 3025 fps | 95.7% |
| Norma MRP | <<locked>> | 92% | 40,698 psi | 64% | 2953 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 34,722 psi | 54% | 2733 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 46,905 psi | 74% | 2982 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 84% | 38,682 psi | 61% | 2838 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,267 psi | 43% | 1798 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 44,918 psi | 70% | 2900 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 51,155 psi | 80% | 3107 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 41,278 psi | 65% | 2959 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 34,418 psi | 54% | 2749 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 36,318 psi | 57% | 2822 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 48,008 psi | 75% | 2933 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 41,568 psi | 65% | 2854 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 96% | 52,765 psi | 83% | 3064 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 94% | 46,035 psi | 72% | 2995 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 82% | 41,814 psi | 66% | 2828 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 38,029 psi | 60% | 2746 fps | 96% |
| Shooters World Match Rifle | <<locked>> | 80% | 51,793 psi | 81% | 3015 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 46,151 psi | 72% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 38,754 psi | 61% | 2779 fps | 95% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 42,975 psi | 67% | 2910 fps | 99.3% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 52,736 psi | 83% | 3041 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 50,430 psi | 79% | 3012 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 51,445 psi | 81% | 2923 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 43,294 psi | 68% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 39,798 psi | 62% | 2743 fps | 95.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 45,600 psi | 71% | 2989 fps | 95.3% |
| Somchem S335 | <<locked>> | 80% | 51,213 psi | 80% | 2920 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 52,518 psi | 82% | 3031 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 42,047 psi | 66% | 2854 fps | 99.5% |
| Somchem S365 | <<locked>> | 80% | 31,096 psi | 49% | 2680 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 43,700 psi | 68% | 2913 fps | 95.7% |
| Vihtavuori N133 | <<locked>> | 80% | 52,011 psi | 82% | 2910 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 48,095 psi | 75% | 2900 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 48,617 psi | 76% | 2913 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 40,161 psi | 63% | 2782 fps | 99.8% |
| Vihtavuori N160 | <<locked>> | 80% | 36,158 psi | 57% | 2740 fps | 96.7% |
| Vihtavuori N165 | <<locked>> | 96% | 43,091 psi | 68% | 2887 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 46,978 psi | 74% | 2907 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,679 psi | 56% | 2740 fps | 96.3% |
| Vihtavuori N555 | <<locked>> | 84% | 30,835 psi | 48% | 2667 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 35,534 psi | 56% | 2707 fps | 98.6% |
| Winchester 760 | <<locked>> | 82% | 39,595 psi | 62% | 2854 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 88% | 28,413 psi | 45% | 2677 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 50,241 psi | 79% | 3015 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 96% | 46,804 psi | 73% | 2969 fps | 95.4% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 97 powders for 7.62 UKM loaded with the .308 | 150gr | Peregrine Glider GRM. Alliant Reloder-26 delivers the highest muzzle velocity at 3,281 fps; across all powders the maximum-charge window runs from 1,959 fps to 3,281 fps. Accurate 3100 gives the best case fill at 100 %, and 97 of the 97 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 150.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Alliant Reloder-19 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.