Load Specifications
Bullet Manufacturer:Peregrine
Bullet Weight:146 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:.300 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.3 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 .300 WSM with .308 | 146gr | Peregrine Glider (Glider GRM) 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 60, Alliant Power Pro 2000-MR and ReloadSwiss RS 52.
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>> | 86% | 54,549 psi | 85% | 2959 fps | 100% |
| Accurate 2460 | <<locked>> | 84% | 56,420 psi | 88% | 3031 fps | 100% |
| Accurate 2495 | <<locked>> | 92% | 55,825 psi | 87% | 3022 fps | 100% |
| Accurate 2520 | <<locked>> | 88% | 56,826 psi | 89% | 3084 fps | 100% |
| Accurate 2700 | <<locked>> | 96% | 57,638 psi | 90% | 3022 fps | 96.3% |
| Accurate 4064 | <<locked>> | 94% | 55,811 psi | 87% | 3068 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 52,257 psi | 82% | 3087 fps | 98.7% |
| Accurate LT-30 | <<locked>> | 82% | 56,956 psi | 89% | 2949 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 57,421 psi | 90% | 2979 fps | 100% |
| ADI AR 2206H | <<locked>> | 90% | 57,232 psi | 90% | 3110 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 54,810 psi | 86% | 3051 fps | 99.3% |
| ADI Benchmark 8208 | <<locked>> | 88% | 56,362 psi | 88% | 3061 fps | 100% |
| Alliant AR-Comp | <<locked>> | 88% | 56,739 psi | 89% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 54,476 psi | 85% | 3120 fps | 99.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 92% | 57,130 psi | 90% | 3232 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 54,404 psi | 85% | 3074 fps | 99.9% |
| Alliant Reloder-10x | <<locked>> | 84% | 57,624 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 55,114 psi | 86% | 3094 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 50,850 psi | 80% | 3094 fps | 98.8% |
| Alliant Reloder-17 | <<locked>> | 98% | 55,477 psi | 87% | 3199 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 35,679 psi | 56% | 2782 fps | 96.4% |
| Baschieri & Pellagri 106 | <<locked>> | 82% | 56,536 psi | 89% | 2943 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 90% | 57,421 psi | 90% | 3127 fps | 99.4% |
| Bofors RP3 | <<locked>> | 94% | 54,897 psi | 86% | 3087 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 55,535 psi | 87% | 3051 fps | 96.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 54,940 psi | 86% | 2995 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 55,738 psi | 87% | 3091 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 53,998 psi | 85% | 3136 fps | 99.4% |
| Hodgdon H322 | <<locked>> | 86% | 56,405 psi | 88% | 3048 fps | 100% |
| Hodgdon H380 | <<locked>> | 94% | 56,362 psi | 88% | 3100 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 98% | 57,450 psi | 90% | 3173 fps | 97.3% |
| Hodgdon H4895 | <<locked>> | 88% | 54,244 psi | 85% | 3064 fps | 99.8% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 46,688 psi | 73% | 2963 fps | 99.2% |
| Hodgdon LEVERevolution | <<locked>> | 94% | 57,246 psi | 90% | 3156 fps | 100% |
| Hodgdon Superformanceᴾ | <<locked>> | 100% | 57,305 psi | 90% | 3189 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,867 psi | 55% | 1880 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 54,592 psi | 86% | 3054 fps | 99.8% |
| IMR 3031 | <<locked>> | 92% | 55,680 psi | 87% | 3077 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 56,898 psi | 89% | 3074 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 96% | 56,536 psi | 89% | 3041 fps | 97% |
| IMR 4198 | <<locked>> | 84% | 57,696 psi | 90% | 2972 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 57,653 psi | 90% | 3087 fps | 97.1% |
| IMR 4831ᴾ | <<locked>> | 100% | 43,787 psi | 69% | 2917 fps | 97.2% |
| IMR 4895 | <<locked>> | 92% | 56,521 psi | 89% | 3130 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 88% | 56,362 psi | 88% | 3061 fps | 100% |
| Lovex D073.5 | <<locked>> | 84% | 56,550 psi | 89% | 3045 fps | 100% |
| Lovex D073.6 | <<locked>> | 90% | 56,826 psi | 89% | 3084 fps | 100% |
| Lovex S060 | <<locked>> | 90% | 57,000 psi | 89% | 3035 fps | 99.8% |
| Lovex S062 | <<locked>> | 94% | 57,392 psi | 90% | 3084 fps | 100% |
| Lovex S065ᴾ | <<locked>> | 100% | 56,376 psi | 88% | 3071 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 3048 fps | 96.8% |
| Norma 201 | <<locked>> | 90% | 55,622 psi | 87% | 3048 fps | 100% |
| Norma 202 | <<locked>> | 90% | 56,492 psi | 89% | 3058 fps | 100% |
| Norma 203B | <<locked>> | 92% | 54,230 psi | 85% | 3081 fps | 99.6% |
| Norma URPᴾ | <<locked>> | 100% | 51,430 psi | 81% | 3074 fps | 98.6% |
| Ramshot Big Game | <<locked>> | 92% | 54,955 psi | 86% | 3107 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 50,662 psi | 79% | 3068 fps | 96.9% |
| Ramshot TAC | <<locked>> | 88% | 57,000 psi | 89% | 3077 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 88% | 56,536 psi | 89% | 3097 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 86% | 57,653 psi | 90% | 3064 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,157 psi | 55% | 1923 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 55,999 psi | 88% | 3045 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 94% | 56,855 psi | 89% | 3081 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 90% | 55,477 psi | 87% | 3166 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 55,201 psi | 87% | 3202 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 51,967 psi | 81% | 3107 fps | 98.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 52,330 psi | 82% | 3136 fps | 98.2% |
| Rottweil R 901 | <<locked>> | 88% | 56,362 psi | 88% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 92% | 56,289 psi | 88% | 3048 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 54,781 psi | 86% | 3077 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 55,535 psi | 87% | 3051 fps | 96.2% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 56,376 psi | 88% | 3071 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 90% | 56,826 psi | 89% | 3084 fps | 100% |
| Shooters World Precision | <<locked>> | 94% | 57,392 psi | 90% | 3084 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 53,722 psi | 84% | 3048 fps | 96.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 55,666 psi | 87% | 3012 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 96% | 56,927 psi | 89% | 3146 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 55,288 psi | 87% | 2992 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 55,129 psi | 86% | 3048 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 55,680 psi | 87% | 3077 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 90% | 57,667 psi | 90% | 2992 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 96% | 57,740 psi | 90% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000ᴾ | <<locked>> | 100% | 57,348 psi | 90% | 3028 fps | 97.1% |
| Somchem S321 | <<locked>> | 84% | 54,128 psi | 85% | 3041 fps | 100% |
| Somchem S335 | <<locked>> | 90% | 56,724 psi | 89% | 2986 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 54,766 psi | 86% | 3045 fps | 99.6% |
| Somchem S355 | <<locked>> | 96% | 55,216 psi | 87% | 3077 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 45,948 psi | 72% | 3018 fps | 99.8% |
| Unknown powderᴾ | <<locked>> | 100% | 56,652 psi | 89% | 3150 fps | 98.8% |
| Vihtavuori N130 | <<locked>> | 86% | 56,057 psi | 88% | 2943 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 56,927 psi | 89% | 2969 fps | 100% |
| Vihtavuori N135 | <<locked>> | 92% | 55,854 psi | 88% | 3015 fps | 100% |
| Vihtavuori N140 | <<locked>> | 92% | 56,260 psi | 88% | 3025 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 3005 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,246 psi | 90% | 3117 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 86% | 56,086 psi | 88% | 3071 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 55,970 psi | 88% | 3051 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3169 fps | 99.2% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 38,479 psi | 60% | 2867 fps | 96.4% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 55,216 psi | 87% | 3061 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 57,653 psi | 90% | 3123 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 57,450 psi | 90% | 3173 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 84% | 57,566 psi | 90% | 3117 fps | 100% |
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% | 44,991 psi | 71% | 2808 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 49,284 psi | 77% | 2923 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 37,101 psi | 58% | 2707 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 42,815 psi | 67% | 2851 fps | 99.8% |
| Accurate 2700 | <<locked>> | 94% | 53,795 psi | 84% | 2963 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 35,085 psi | 55% | 2687 fps | 99.4% |
| Accurate 4350 | <<locked>> | 92% | 38,986 psi | 61% | 2835 fps | 95.8% |
| Accurate LT-30 | <<locked>> | 80% | 53,693 psi | 84% | 2904 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 54,143 psi | 85% | 2930 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 41,539 psi | 65% | 2822 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 80% | 35,375 psi | 55% | 2661 fps | 95.1% |
| ADI Benchmark 8208 | <<locked>> | 80% | 43,627 psi | 68% | 2838 fps | 99.1% |
| Alliant AR-Comp | <<locked>> | 80% | 43,381 psi | 68% | 2838 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 50,923 psi | 80% | 3058 fps | 99.6% |
| Alliant Power Pro 2000-MR | 55.7 gr | 80% | 37,608 psi | 59% | 2831 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 34,490 psi | 54% | 2674 fps | 96.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 50,778 psi | 80% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 37,260 psi | 58% | 2743 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 90% | 36,970 psi | 58% | 2789 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 84% | 34,200 psi | 54% | 2749 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 98% | 33,605 psi | 53% | 2726 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 53,026 psi | 83% | 2894 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 40,770 psi | 64% | 2822 fps | 96.4% |
| Bofors RP3 | <<locked>> | 80% | 33,953 psi | 53% | 2674 fps | 96.6% |
| Bofors RP7 | <<locked>> | 96% | 52,069 psi | 82% | 2992 fps | 95.4% |
| Hodgdon Benchmark | <<locked>> | 80% | 45,513 psi | 71% | 2835 fps | 99.6% |
| Hodgdon BL-C2 | <<locked>> | 80% | 42,148 psi | 66% | 2851 fps | 99.2% |
| Hodgdon CFE223 | <<locked>> | 80% | 46,557 psi | 73% | 3002 fps | 98.3% |
| Hodgdon H322 | <<locked>> | 80% | 46,412 psi | 73% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 40,132 psi | 63% | 2799 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 94% | 50,096 psi | 79% | 3048 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 80% | 41,872 psi | 66% | 2835 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 33,707 psi | 53% | 2674 fps | 95.8% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 35,520 psi | 56% | 2740 fps | 97.1% |
| Hodgdon Superformance | <<locked>> | 98% | 53,040 psi | 83% | 3117 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,846 psi | 41% | 1680 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 37,289 psi | 58% | 2717 fps | 97.1% |
| IMR 3031 | <<locked>> | 80% | 37,681 psi | 59% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 34,476 psi | 54% | 2631 fps | 95% |
| IMR 4166 Enduron | <<locked>> | 92% | 50,125 psi | 79% | 2930 fps | 95.6% |
| IMR 4198 | <<locked>> | 80% | 51,358 psi | 80% | 2881 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 94% | 50,865 psi | 80% | 2972 fps | 95.7% |
| IMR 4831 | <<locked>> | 96% | 38,479 psi | 60% | 2802 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 38,174 psi | 60% | 2776 fps | 96.9% |
| IMR 8208 XBR | <<locked>> | 80% | 43,627 psi | 68% | 2838 fps | 99.1% |
| Lovex D073.5 | <<locked>> | 80% | 49,139 psi | 77% | 2930 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 80% | 40,219 psi | 63% | 2799 fps | 99.6% |
| Lovex S060 | <<locked>> | 80% | 41,974 psi | 66% | 2766 fps | 97.9% |
| Lovex S062 | <<locked>> | 80% | 36,753 psi | 58% | 2700 fps | 97.8% |
| Lovex S065 | <<locked>> | 92% | 43,903 psi | 69% | 2848 fps | 95.6% |
| Lovex S070 | <<locked>> | 96% | 47,456 psi | 74% | 2936 fps | 95.3% |
| Norma 201 | <<locked>> | 80% | 40,393 psi | 63% | 2772 fps | 98.6% |
| Norma 202 | <<locked>> | 80% | 40,727 psi | 64% | 2785 fps | 99.8% |
| Norma 203B | <<locked>> | 80% | 36,666 psi | 57% | 2733 fps | 96.4% |
| Norma URP | <<locked>> | 92% | 39,494 psi | 62% | 2841 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 36,201 psi | 57% | 2740 fps | 96% |
| Ramshot Hunter | <<locked>> | 96% | 44,309 psi | 69% | 2943 fps | 95.2% |
| Ramshot TAC | <<locked>> | 80% | 43,642 psi | 68% | 2835 fps | 95.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 42,975 psi | 67% | 2858 fps | 98% |
| Ramshot X-Terminator | <<locked>> | 80% | 47,224 psi | 74% | 2887 fps | 98.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,179 psi | 41% | 1722 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 48,994 psi | 77% | 2933 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 46,514 psi | 73% | 2900 fps | 95.5% |
| ReloadSwiss RS 52 | 54 gr | 80% | 38,870 psi | 61% | 2848 fps | 96.4% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 31,691 psi | 50% | 2690 fps | 97.4% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 39,030 psi | 61% | 2854 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 42,380 psi | 66% | 2933 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 44,251 psi | 69% | 2828 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 38,435 psi | 60% | 2720 fps | 98.1% |
| Rottweil R 903 | <<locked>> | 80% | 31,763 psi | 50% | 2608 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 96% | 52,069 psi | 82% | 2992 fps | 95.4% |
| Shooters World Long Rifle | <<locked>> | 92% | 43,903 psi | 69% | 2848 fps | 95.6% |
| Shooters World Match Rifle | <<locked>> | 80% | 40,219 psi | 63% | 2799 fps | 99.6% |
| Shooters World Precision | <<locked>> | 80% | 36,753 psi | 58% | 2700 fps | 97.8% |
| Shooters World SW4350 | <<locked>> | 96% | 47,456 psi | 74% | 2936 fps | 95.3% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 51,880 psi | 81% | 2953 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 35,346 psi | 55% | 2723 fps | 95.8% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 51,706 psi | 81% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 41,611 psi | 65% | 2802 fps | 95.8% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 40,118 psi | 63% | 2785 fps | 97.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 42,047 psi | 66% | 2740 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 34,693 psi | 54% | 2589 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 50,125 psi | 79% | 2910 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 47,181 psi | 74% | 2923 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 41,510 psi | 65% | 2736 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 41,495 psi | 65% | 2805 fps | 97.6% |
| Somchem S355 | <<locked>> | 80% | 32,779 psi | 51% | 2621 fps | 95.5% |
| Somchem S365 | <<locked>> | 86% | 28,732 psi | 45% | 2592 fps | 95% |
| Unknown powder | <<locked>> | 90% | 40,408 psi | 63% | 2848 fps | 95.3% |
| Vihtavuori N130 | <<locked>> | 80% | 46,847 psi | 73% | 2802 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 39,740 psi | 62% | 2690 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 37,681 psi | 59% | 2713 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 38,159 psi | 60% | 2713 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 27,862 psi | 44% | 2467 fps | 95% |
| Vihtavuori N160 | <<locked>> | 88% | 37,927 psi | 59% | 2762 fps | 95.1% |
| Vihtavuori N530 | <<locked>> | 80% | 45,977 psi | 72% | 2897 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 37,840 psi | 59% | 2726 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 88% | 38,305 psi | 60% | 2805 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 98% | 35,940 psi | 56% | 2808 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 32,010 psi | 50% | 2589 fps | 95.1% |
| Winchester 748 | <<locked>> | 80% | 46,659 psi | 73% | 2946 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 50,096 psi | 79% | 3048 fps | 95.8% |
| Winchester StaBALL Match | <<locked>> | 80% | 49,588 psi | 78% | 2986 fps | 99.5% |
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 103 powders for .300 WSM loaded with the .308 | 146gr | Peregrine Glider (Glider GRM). Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,232 fps; across all powders the maximum-charge window runs from 1,880 fps to 3,232 fps. Accurate 4350 gives the best case fill at 100 %, and 103 of the 103 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 55–90 %, leaving at least 10 % headroom. The 146.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-23 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, Alliant Power Pro 2000-MR, ReloadSwiss RS 52 rank at the top here: for .300 WSM with the .308 | 146gr | Peregrine Glider (Glider GRM) 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.