Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:145 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:1:13.5
Load data in caliber .300 WSM with .308 | 145gr | CutEdge ESP Raptor bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 2000-MR, ReloadSwiss RS 60 and Alliant Reloder-17.
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% | 56,318 psi | 88% | 3005 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,679 psi | 86% | 3028 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,375 psi | 85% | 3018 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,158 psi | 86% | 3081 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,651 psi | 87% | 3018 fps | 96.2% |
| Accurate 4064 | <<locked>> | 92% | 54,346 psi | 85% | 3064 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,549 psi | 85% | 3143 fps | 99.1% |
| ADI AR 2206H | <<locked>> | 88% | 55,390 psi | 87% | 3100 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 94% | 56,536 psi | 89% | 3100 fps | 99.6% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,621 psi | 86% | 3054 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,187 psi | 86% | 3035 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,420 psi | 88% | 3173 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,419 psi | 87% | 3228 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,492 psi | 89% | 3123 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,695 psi | 87% | 3009 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,217 psi | 90% | 3150 fps | 99.7% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,533 psi | 82% | 3150 fps | 99.2% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,940 psi | 85% | 3196 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,159 psi | 58% | 2841 fps | 97.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,655 psi | 65% | 3005 fps | 96.2% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,550 psi | 87% | 3117 fps | 99.3% |
| Bofors RP3 | <<locked>> | 94% | 57,058 psi | 89% | 3140 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,305 psi | 90% | 3104 fps | 96.8% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,391 psi | 88% | 3038 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 88% | 57,566 psi | 90% | 3140 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,057 psi | 88% | 3189 fps | 99.6% |
| Hodgdon H322 | <<locked>> | 84% | 54,592 psi | 86% | 3045 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,534 psi | 85% | 3094 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 96% | 55,796 psi | 87% | 3169 fps | 97.3% |
| Hodgdon H4350ᴾ | <<locked>> | 100% | 56,304 psi | 88% | 3127 fps | 95.9% |
| Hodgdon H4895 | <<locked>> | 88% | 55,927 psi | 88% | 3114 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 48,718 psi | 76% | 3015 fps | 99.5% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,506 psi | 87% | 3146 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,332 psi | 87% | 3182 fps | 96.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,114 psi | 55% | 1906 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,188 psi | 88% | 3100 fps | 99.9% |
| IMR 3031 | <<locked>> | 90% | 54,114 psi | 85% | 3074 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,187 psi | 86% | 3071 fps | 99.6% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,723 psi | 86% | 3038 fps | 96.9% |
| IMR 4198 | <<locked>> | 82% | 55,854 psi | 88% | 2969 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,056 psi | 85% | 3071 fps | 96.2% |
| IMR 4451 Enduron | <<locked>> | 96% | 55,912 psi | 88% | 3084 fps | 97% |
| IMR 4831ᴾ | <<locked>> | 100% | 45,643 psi | 72% | 2972 fps | 97.8% |
| IMR 4895 | <<locked>> | 90% | 54,911 psi | 86% | 3127 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 54,621 psi | 86% | 3054 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,433 psi | 85% | 3035 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,158 psi | 86% | 3081 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,158 psi | 86% | 3028 fps | 99.7% |
| Lovex S062 | <<locked>> | 92% | 55,738 psi | 87% | 3081 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 54,969 psi | 86% | 3074 fps | 98.2% |
| Lovex S070ᴾ | <<locked>> | 100% | 55,970 psi | 88% | 3110 fps | 97.4% |
| Norma 201 | <<locked>> | 90% | 57,653 psi | 90% | 3100 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,752 psi | 86% | 3051 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,376 psi | 88% | 3136 fps | 99.8% |
| Norma URPᴾ | <<locked>> | 100% | 53,824 psi | 84% | 3133 fps | 99% |
| Ramshot Big Game | <<locked>> | 92% | 57,101 psi | 89% | 3159 fps | 99.8% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,721 psi | 83% | 3123 fps | 97.5% |
| Ramshot TAC | <<locked>> | 86% | 55,129 psi | 86% | 3071 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,563 psi | 86% | 3091 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,695 psi | 87% | 3058 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,418 psi | 56% | 1949 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,551 psi | 90% | 3087 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,129 psi | 86% | 3077 fps | 97.6% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,882 psi | 84% | 3159 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,537 psi | 90% | 3258 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,302 psi | 85% | 3166 fps | 99% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,433 psi | 85% | 3196 fps | 98.7% |
| Rottweil R 901 | <<locked>> | 86% | 54,853 psi | 86% | 3031 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,476 psi | 85% | 3041 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 56,898 psi | 89% | 3130 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,305 psi | 90% | 3104 fps | 96.8% |
| Shooters World Long Rifle | <<locked>> | 98% | 54,969 psi | 86% | 3074 fps | 98.2% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,158 psi | 86% | 3081 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,738 psi | 87% | 3081 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 55,970 psi | 88% | 3110 fps | 97.4% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,363 psi | 90% | 3061 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,259 psi | 87% | 3140 fps | 99.8% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,753 psi | 89% | 3035 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,101 psi | 89% | 3104 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,653 psi | 90% | 3130 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 55,869 psi | 88% | 2989 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,217 psi | 88% | 2986 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,593 psi | 87% | 3025 fps | 97% |
| Somchem S321 | <<locked>> | 84% | 55,941 psi | 88% | 3091 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 54,955 psi | 86% | 2982 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,753 psi | 89% | 3097 fps | 99.8% |
| Somchem S355 | <<locked>> | 96% | 57,276 psi | 90% | 3130 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 47,950 psi | 75% | 3074 fps | 100% |
| Unknown powder | <<locked>> | 98% | 54,868 psi | 86% | 3143 fps | 98.7% |
| Vihtavuori N130 | <<locked>> | 84% | 54,346 psi | 85% | 2940 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,274 psi | 87% | 2966 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,244 psi | 85% | 3012 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,447 psi | 85% | 3018 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,100 psi | 86% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,651 psi | 87% | 3114 fps | 99.1% |
| Vihtavuori N530 | <<locked>> | 84% | 54,099 psi | 85% | 3058 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,725 psi | 90% | 3097 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 55,811 psi | 87% | 3163 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,451 psi | 63% | 2927 fps | 97.2% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,508 psi | 90% | 3117 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,738 psi | 87% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,796 psi | 87% | 3169 fps | 97.3% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,172 psi | 86% | 3100 fps | 99.9% |
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% | 46,557 psi | 73% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 50,850 psi | 80% | 2969 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 38,595 psi | 60% | 2753 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,585 psi | 70% | 2904 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 52,069 psi | 82% | 2959 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 36,521 psi | 57% | 2736 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 38,043 psi | 60% | 2828 fps | 95.6% |
| ADI AR 2206H | <<locked>> | 80% | 42,844 psi | 67% | 2871 fps | 98.2% |
| ADI AR 2208 | <<locked>> | 80% | 36,390 psi | 57% | 2703 fps | 95.6% |
| ADI Benchmark 8208 | <<locked>> | 80% | 44,962 psi | 70% | 2884 fps | 99.4% |
| Alliant AR-Comp | <<locked>> | 80% | 44,860 psi | 70% | 2877 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,620 psi | 82% | 3107 fps | 99.8% |
| Alliant Power Pro 2000-MR | 57.9 gr | 80% | 39,001 psi | 61% | 2887 fps | 96.2% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 35,766 psi | 56% | 2723 fps | 97.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,272 psi | 82% | 2956 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,551 psi | 60% | 2792 fps | 96.6% |
| Alliant Reloder-16 | <<locked>> | 90% | 38,276 psi | 60% | 2844 fps | 95.8% |
| Alliant Reloder-17 | 58.4 gr | 82% | 33,083 psi | 52% | 2736 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,822 psi | 51% | 2723 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,638 psi | 61% | 2933 fps | 95% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,061 psi | 66% | 2867 fps | 97% |
| Bofors RP3 | <<locked>> | 80% | 35,230 psi | 55% | 2720 fps | 97.2% |
| Bofors RP7 | <<locked>> | 94% | 50,386 psi | 79% | 2982 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 46,818 psi | 73% | 2881 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,787 psi | 69% | 2904 fps | 99.5% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,341 psi | 76% | 3054 fps | 98.8% |
| Hodgdon H322 | <<locked>> | 80% | 47,747 psi | 75% | 2933 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 38,870 psi | 61% | 2789 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 92% | 48,631 psi | 76% | 3041 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 98% | 52,953 psi | 83% | 3068 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 43,207 psi | 68% | 2884 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 32,822 psi | 51% | 2671 fps | 95.6% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 36,898 psi | 58% | 2789 fps | 97.7% |
| Hodgdon Superformance | <<locked>> | 96% | 51,401 psi | 81% | 3110 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,020 psi | 41% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,406 psi | 60% | 2762 fps | 97.6% |
| IMR 3031 | <<locked>> | 80% | 39,117 psi | 61% | 2815 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 35,607 psi | 56% | 2680 fps | 95.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 48,472 psi | 76% | 2923 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,678 psi | 83% | 2920 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 50,821 psi | 80% | 3012 fps | 95.4% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,313 psi | 77% | 2969 fps | 95.6% |
| IMR 4831 | <<locked>> | 94% | 37,550 psi | 59% | 2799 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 39,479 psi | 62% | 2828 fps | 97.5% |
| IMR 8208 XBR | <<locked>> | 80% | 44,962 psi | 70% | 2884 fps | 99.4% |
| Lovex D073.5 | <<locked>> | 80% | 50,879 psi | 80% | 2979 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 41,785 psi | 65% | 2848 fps | 99.8% |
| Lovex S060 | <<locked>> | 80% | 43,033 psi | 67% | 2808 fps | 98.2% |
| Lovex S062 | <<locked>> | 80% | 37,869 psi | 59% | 2746 fps | 98.2% |
| Lovex S065 | <<locked>> | 90% | 42,757 psi | 67% | 2844 fps | 95.5% |
| Lovex S070 | <<locked>> | 94% | 45,992 psi | 72% | 2930 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 41,742 psi | 65% | 2818 fps | 98.9% |
| Norma 202 | <<locked>> | 80% | 42,119 psi | 66% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 80% | 37,927 psi | 59% | 2782 fps | 97% |
| Norma URP | <<locked>> | 90% | 38,334 psi | 60% | 2831 fps | 95.6% |
| Ramshot Big Game | <<locked>> | 80% | 37,623 psi | 59% | 2792 fps | 96.6% |
| Ramshot Hunter | <<locked>> | 94% | 43,076 psi | 68% | 2936 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 45,078 psi | 71% | 2887 fps | 96.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,338 psi | 69% | 2904 fps | 98.4% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,762 psi | 76% | 2940 fps | 99% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,339 psi | 41% | 1745 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,589 psi | 79% | 2982 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 45,020 psi | 71% | 2894 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,466 psi | 63% | 2900 fps | 97% |
| ReloadSwiss RS 60 | 57 gr | 80% | 33,011 psi | 52% | 2749 fps | 98.1% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 37,927 psi | 59% | 2844 fps | 95.1% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,104 psi | 64% | 2923 fps | 95.3% |
| Rottweil R 901 | <<locked>> | 80% | 45,542 psi | 71% | 2871 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 39,798 psi | 62% | 2769 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 80% | 33,025 psi | 52% | 2657 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 50,386 psi | 79% | 2982 fps | 95.3% |
| Shooters World Long Rifle | <<locked>> | 90% | 42,757 psi | 67% | 2844 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 41,785 psi | 65% | 2848 fps | 99.8% |
| Shooters World Precision | <<locked>> | 80% | 37,869 psi | 59% | 2746 fps | 98.2% |
| Shooters World SW4350 | <<locked>> | 94% | 45,992 psi | 72% | 2930 fps | 95.1% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,635 psi | 84% | 3002 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,330 psi | 54% | 2717 fps | 95.5% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,476 psi | 84% | 2986 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,149 psi | 68% | 2854 fps | 96.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,481 psi | 65% | 2835 fps | 97.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,468 psi | 68% | 2785 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 35,984 psi | 56% | 2635 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,617 psi | 76% | 2907 fps | 95.5% |
| Somchem S321 | <<locked>> | 80% | 48,588 psi | 76% | 2969 fps | 99.8% |
| Somchem S335 | <<locked>> | 80% | 42,844 psi | 67% | 2782 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 42,801 psi | 67% | 2851 fps | 98.1% |
| Somchem S355 | <<locked>> | 80% | 34,026 psi | 53% | 2671 fps | 96.2% |
| Somchem S365 | <<locked>> | 86% | 29,965 psi | 47% | 2648 fps | 95.9% |
| Unknown powder | <<locked>> | 88% | 39,218 psi | 61% | 2838 fps | 95% |
| Vihtavuori N130 | <<locked>> | 80% | 48,182 psi | 76% | 2844 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 40,814 psi | 64% | 2730 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,233 psi | 61% | 2759 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,494 psi | 62% | 2756 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 28,877 psi | 45% | 2510 fps | 95.7% |
| Vihtavuori N160 | <<locked>> | 88% | 39,450 psi | 62% | 2815 fps | 95.8% |
| Vihtavuori N530 | <<locked>> | 80% | 47,384 psi | 74% | 2943 fps | 99.7% |
| Vihtavuori N540 | <<locked>> | 80% | 39,059 psi | 61% | 2772 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 88% | 39,711 psi | 62% | 2854 fps | 95.8% |
| Vihtavuori N555 | <<locked>> | 96% | 35,215 psi | 55% | 2802 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,141 psi | 52% | 2635 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 48,182 psi | 76% | 2992 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 48,631 psi | 76% | 3041 fps | 95.7% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,358 psi | 80% | 3038 fps | 99.7% |
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 | 145gr | CutEdge ESP Raptor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,258 fps; across all powders the maximum-charge window runs from 1,906 fps to 3,258 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 145.0 gr projectile in 0.308" calls for a 1:13.5 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. Alliant Power Pro 2000-MR, ReloadSwiss RS 60, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 145gr | CutEdge ESP Raptor 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.