Load Specifications
Bullet Manufacturer:Cutting Edge
Bullet Weight:135 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:1:10.0
Load data in caliber .300 WSM with .308 | 135gr | CutEdge ER Raptor bullet and 99 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 52 and ReloadSwiss RS 60.
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.
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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>> | 90% | 57,638 psi | 90% | 3110 fps | 100% |
| Accurate 2460 | <<locked>> | 86% | 56,246 psi | 88% | 3136 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 55,042 psi | 86% | 3120 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 56,391 psi | 88% | 3186 fps | 100% |
| Accurate 4064 | <<locked>> | 96% | 54,897 psi | 86% | 3163 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 47,297 psi | 74% | 3100 fps | 97% |
| Accurate LT-30 | <<locked>> | 84% | 57,450 psi | 90% | 3061 fps | 100% |
| Accurate LT-32 | <<locked>> | 82% | 54,273 psi | 85% | 3031 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 56,826 psi | 89% | 3205 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 96% | 54,549 psi | 85% | 3143 fps | 98.7% |
| ADI AR 2219 | <<locked>> | 82% | 54,665 psi | 86% | 3133 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 56,362 psi | 88% | 3163 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 90% | 56,304 psi | 88% | 3146 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 84% | 54,172 psi | 85% | 3222 fps | 99.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 56,898 psi | 89% | 3327 fps | 99.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 57,406 psi | 90% | 3222 fps | 99.8% |
| Alliant Reloder-10x | <<locked>> | 86% | 57,377 psi | 90% | 3123 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 94% | 54,534 psi | 85% | 3186 fps | 98.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 46,920 psi | 74% | 3110 fps | 97.1% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 54,853 psi | 86% | 3287 fps | 99.7% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 56,753 psi | 89% | 3048 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 57,261 psi | 90% | 3222 fps | 98.8% |
| Bofors RP3 | <<locked>> | 96% | 54,215 psi | 85% | 3179 fps | 99.7% |
| Hodgdon Benchmark | <<locked>> | 88% | 54,868 psi | 86% | 3097 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 90% | 55,158 psi | 86% | 3186 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 57,435 psi | 90% | 3297 fps | 99.2% |
| Hodgdon H322 | <<locked>> | 88% | 56,086 psi | 88% | 3156 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 53,998 psi | 85% | 3130 fps | 100% |
| Hodgdon H380 | <<locked>> | 96% | 55,941 psi | 88% | 3192 fps | 98.1% |
| Hodgdon H414ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3258 fps | 96.2% |
| Hodgdon H4198 | <<locked>> | 82% | 55,840 psi | 88% | 3064 fps | 100% |
| Hodgdon H4895 | <<locked>> | 92% | 57,406 psi | 90% | 3219 fps | 99.7% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 43,018 psi | 67% | 2979 fps | 97.7% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 56,521 psi | 89% | 3248 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,548 psi | 54% | 1942 fps | 100% |
| Hodgdon VARGET | <<locked>> | 96% | 57,653 psi | 90% | 3202 fps | 99.7% |
| IMR 3031 | <<locked>> | 94% | 54,969 psi | 86% | 3182 fps | 100% |
| IMR 4064 | <<locked>> | 98% | 56,304 psi | 88% | 3166 fps | 99.1% |
| IMR 4166 Enduron | <<locked>> | 98% | 56,231 psi | 88% | 3127 fps | 95.9% |
| IMR 4198 | <<locked>> | 86% | 57,711 psi | 90% | 3084 fps | 100% |
| IMR 4451 Enduronᴾ | <<locked>> | 100% | 57,261 psi | 90% | 3173 fps | 96% |
| IMR 4895 | <<locked>> | 94% | 55,970 psi | 88% | 3225 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 90% | 56,362 psi | 88% | 3163 fps | 99.8% |
| Lovex D073.5 | <<locked>> | 86% | 56,318 psi | 88% | 3146 fps | 100% |
| Lovex D073.6 | <<locked>> | 92% | 56,391 psi | 88% | 3186 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 56,956 psi | 89% | 3133 fps | 99.4% |
| Lovex S062 | <<locked>> | 96% | 56,681 psi | 89% | 3179 fps | 99.9% |
| Lovex S065ᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3100 fps | 96.6% |
| Norma 200 | <<locked>> | 82% | 57,000 psi | 89% | 3091 fps | 100% |
| Norma 201 | <<locked>> | 92% | 55,535 psi | 87% | 3150 fps | 99.8% |
| Norma 202 | <<locked>> | 92% | 56,072 psi | 88% | 3159 fps | 100% |
| Norma 203B | <<locked>> | 96% | 57,319 psi | 90% | 3232 fps | 99.5% |
| Norma URPᴾ | <<locked>> | 100% | 47,282 psi | 74% | 3097 fps | 96.9% |
| Ramshot Big Game | <<locked>> | 94% | 54,505 psi | 85% | 3202 fps | 99.1% |
| Ramshot TAC | <<locked>> | 90% | 57,058 psi | 89% | 3173 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 90% | 56,101 psi | 88% | 3196 fps | 99.3% |
| Ramshot X-Terminator | <<locked>> | 86% | 54,012 psi | 85% | 3104 fps | 99% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 34,766 psi | 54% | 1988 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 56,028 psi | 88% | 3150 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 96% | 56,492 psi | 89% | 3169 fps | 96.7% |
| ReloadSwiss RS 52 | <<locked>> | 92% | 54,839 psi | 86% | 3261 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 98% | 54,592 psi | 86% | 3294 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 47,311 psi | 74% | 3120 fps | 96.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 48,356 psi | 76% | 3140 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 90% | 55,985 psi | 88% | 3133 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 55,912 psi | 88% | 3146 fps | 99.8% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 57,566 psi | 90% | 3222 fps | 99.8% |
| Shooters World Long Rifleᴾ | <<locked>> | 100% | 52,504 psi | 82% | 3100 fps | 96.6% |
| Shooters World Match Rifle | <<locked>> | 92% | 56,391 psi | 88% | 3186 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 56,681 psi | 89% | 3179 fps | 99.9% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 55,782 psi | 87% | 3114 fps | 99.7% |
| SNPE Vectan BA6 1/2 | <<locked>> | 82% | 57,174 psi | 90% | 2792 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 82% | 55,013 psi | 86% | 3143 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 98% | 56,231 psi | 88% | 3235 fps | 99.3% |
| SNPE Vectan SP 3 | <<locked>> | 84% | 54,998 psi | 86% | 3097 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 90% | 55,013 psi | 86% | 3143 fps | 97.8% |
| SNPE Vectan SP 9 | <<locked>> | 92% | 55,506 psi | 87% | 3173 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 57,682 psi | 90% | 3097 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 57,638 psi | 90% | 3087 fps | 100% |
| Somchem S321 | <<locked>> | 86% | 53,969 psi | 85% | 3140 fps | 99.8% |
| Somchem S335 | <<locked>> | 92% | 56,782 psi | 89% | 3091 fps | 100% |
| Somchem S341 | <<locked>> | 90% | 54,578 psi | 86% | 3140 fps | 99.1% |
| Somchem S355 | <<locked>> | 98% | 54,375 psi | 85% | 3163 fps | 99.4% |
| Somchem S365ᴾ | <<locked>> | 100% | 42,119 psi | 66% | 3035 fps | 98.8% |
| Unknown powderᴾ | <<locked>> | 100% | 52,011 psi | 82% | 3169 fps | 97.2% |
| Vihtavuori N120 | <<locked>> | 82% | 54,984 psi | 86% | 2969 fps | 100% |
| Vihtavuori N130 | <<locked>> | 88% | 56,260 psi | 88% | 3054 fps | 100% |
| Vihtavuori N133 | <<locked>> | 94% | 56,739 psi | 89% | 3074 fps | 100% |
| Vihtavuori N135 | <<locked>> | 94% | 54,984 psi | 86% | 3114 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 55,593 psi | 87% | 3120 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 49,168 psi | 77% | 3041 fps | 99.6% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 52,591 psi | 82% | 3140 fps | 97.8% |
| Vihtavuori N530 | <<locked>> | 88% | 56,101 psi | 88% | 3173 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 94% | 55,550 psi | 87% | 3150 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 3192 fps | 97.8% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 51,242 psi | 80% | 3087 fps | 99.3% |
| Winchester 748 | <<locked>> | 88% | 57,348 psi | 90% | 3225 fps | 100% |
| Winchester 760ᴾ | <<locked>> | 100% | 56,768 psi | 89% | 3258 fps | 96.2% |
| Winchester StaBALL Match | <<locked>> | 86% | 57,319 psi | 90% | 3215 fps | 99.7% |
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 2015 | <<locked>> | 80% | 41,843 psi | 66% | 2854 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 45,832 psi | 72% | 2966 fps | 99.9% |
| Accurate 2495 | <<locked>> | 80% | 34,127 psi | 53% | 2740 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 39,465 psi | 62% | 2881 fps | 99% |
| Accurate 4064 | <<locked>> | 80% | 32,285 psi | 51% | 2713 fps | 98.2% |
| Accurate 4350 | <<locked>> | 96% | 40,857 psi | 64% | 2969 fps | 95.3% |
| Accurate LT-30 | <<locked>> | 80% | 50,720 psi | 79% | 2959 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 51,097 psi | 80% | 2982 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 38,653 psi | 61% | 2848 fps | 96% |
| ADI AR 2208 | <<locked>> | 86% | 39,769 psi | 62% | 2854 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 51,082 psi | 80% | 3077 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 40,756 psi | 64% | 2871 fps | 97.8% |
| Alliant AR-Comp | <<locked>> | 80% | 39,813 psi | 62% | 2881 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 47,282 psi | 74% | 3094 fps | 98.6% |
| Alliant Power Pro 2000-MR | 57.8 gr | 84% | 40,089 psi | 63% | 2979 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 34,069 psi | 53% | 2756 fps | 95.4% |
| Alliant Reloder-10x | <<locked>> | 80% | 47,674 psi | 75% | 2972 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 39,450 psi | 62% | 2887 fps | 95.6% |
| Alliant Reloder-16 | <<locked>> | 96% | 41,408 psi | 65% | 2982 fps | 95.4% |
| Alliant Reloder-17 | <<locked>> | 88% | 36,143 psi | 57% | 2884 fps | 95.4% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 49,806 psi | 78% | 2943 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 40,408 psi | 63% | 2904 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 33,417 psi | 52% | 2749 fps | 95.3% |
| Hodgdon Benchmark | <<locked>> | 80% | 42,757 psi | 67% | 2874 fps | 98.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 39,015 psi | 61% | 2881 fps | 98% |
| Hodgdon CFE223 | <<locked>> | 80% | 43,018 psi | 67% | 3028 fps | 96.7% |
| Hodgdon H322 | <<locked>> | 80% | 43,207 psi | 68% | 2933 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 50,328 psi | 79% | 3071 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 42,540 psi | 67% | 2943 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 98% | 53,069 psi | 83% | 3196 fps | 95.4% |
| Hodgdon H4198 | <<locked>> | 80% | 52,286 psi | 82% | 3005 fps | 100% |
| Hodgdon H4895 | <<locked>> | 80% | 38,914 psi | 61% | 2864 fps | 96.7% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 35,491 psi | 56% | 2805 fps | 95.2% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 35,085 psi | 55% | 2818 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,469 psi | 40% | 1736 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 34,693 psi | 54% | 2740 fps | 95.1% |
| IMR 3031 | <<locked>> | 80% | 34,563 psi | 54% | 2795 fps | 99.6% |
| IMR 4064 | <<locked>> | 86% | 38,841 psi | 61% | 2828 fps | 95.5% |
| IMR 4166 Enduron | <<locked>> | 96% | 53,011 psi | 83% | 3071 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 48,414 psi | 76% | 2943 fps | 100% |
| IMR 4451 Enduron | <<locked>> | 98% | 53,983 psi | 85% | 3117 fps | 95.3% |
| IMR 4895 | <<locked>> | 82% | 37,797 psi | 59% | 2861 fps | 95.8% |
| IMR 8208 XBR | <<locked>> | 80% | 40,756 psi | 64% | 2871 fps | 97.8% |
| Lovex D073.5 | <<locked>> | 80% | 45,716 psi | 72% | 2966 fps | 99.4% |
| Lovex D073.6 | <<locked>> | 80% | 37,028 psi | 58% | 2825 fps | 98.5% |
| Lovex S060 | <<locked>> | 80% | 39,363 psi | 62% | 2799 fps | 96.2% |
| Lovex S062 | <<locked>> | 80% | 34,040 psi | 53% | 2723 fps | 96% |
| Lovex S065 | <<locked>> | 96% | 46,340 psi | 73% | 2986 fps | 95.1% |
| Norma 200 | <<locked>> | 80% | 53,635 psi | 84% | 3041 fps | 100% |
| Norma 201 | <<locked>> | 80% | 37,753 psi | 59% | 2805 fps | 97.1% |
| Norma 202 | <<locked>> | 80% | 37,811 psi | 59% | 2822 fps | 99.1% |
| Norma 203B | <<locked>> | 82% | 36,245 psi | 57% | 2812 fps | 95.2% |
| Norma URP | <<locked>> | 96% | 41,495 psi | 65% | 2972 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 84% | 38,392 psi | 60% | 2881 fps | 95.6% |
| Ramshot TAC | <<locked>> | 84% | 46,586 psi | 73% | 2986 fps | 95.4% |
| Ramshot Wild Boar | <<locked>> | 80% | 39,784 psi | 62% | 2881 fps | 96.3% |
| Ramshot X-Terminator | <<locked>> | 80% | 44,295 psi | 69% | 2927 fps | 97.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 25,759 psi | 40% | 1781 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 45,803 psi | 72% | 2976 fps | 99.6% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 49,385 psi | 77% | 3045 fps | 95.1% |
| ReloadSwiss RS 52 | 54.7 gr | 82% | 38,261 psi | 60% | 2930 fps | 95.1% |
| ReloadSwiss RS 60 | 55.6 gr | 82% | 31,560 psi | 49% | 2762 fps | 96% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 44,164 psi | 69% | 3058 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 45,266 psi | 71% | 3074 fps | 95.1% |
| Rottweil R 901 | <<locked>> | 80% | 41,278 psi | 65% | 2867 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 35,723 psi | 56% | 2746 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 84% | 33,489 psi | 52% | 2743 fps | 95% |
| Shooters World Long Rifle | <<locked>> | 96% | 46,340 psi | 73% | 2986 fps | 95.1% |
| Shooters World Match Rifle | <<locked>> | 80% | 37,028 psi | 58% | 2825 fps | 98.5% |
| Shooters World Precision | <<locked>> | 80% | 34,040 psi | 53% | 2723 fps | 96% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 48,646 psi | 76% | 2992 fps | 99% |
| SNPE Vectan BA6 1/2 | <<locked>> | 80% | 54,143 psi | 85% | 2753 fps | 100% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 51,329 psi | 80% | 3084 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 37,492 psi | 59% | 2867 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 48,515 psi | 76% | 2995 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 44,396 psi | 70% | 2949 fps | 95.5% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 37,318 psi | 58% | 2812 fps | 95.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 39,479 psi | 62% | 2779 fps | 99.3% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 32,372 psi | 51% | 2625 fps | 98.7% |
| Somchem S321 | <<locked>> | 80% | 43,787 psi | 69% | 2956 fps | 98.7% |
| Somchem S335 | <<locked>> | 80% | 38,972 psi | 61% | 2779 fps | 99.7% |
| Somchem S341 | <<locked>> | 80% | 38,348 psi | 60% | 2825 fps | 95.7% |
| Somchem S355 | <<locked>> | 84% | 34,635 psi | 54% | 2759 fps | 95.2% |
| Somchem S365 | <<locked>> | 92% | 32,169 psi | 50% | 2782 fps | 95.5% |
| Unknown powder | <<locked>> | 96% | 45,455 psi | 71% | 3045 fps | 95.7% |
| Vihtavuori N120 | <<locked>> | 80% | 51,721 psi | 81% | 2920 fps | 100% |
| Vihtavuori N130 | <<locked>> | 80% | 43,874 psi | 69% | 2854 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 36,985 psi | 58% | 2733 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 34,838 psi | 55% | 2749 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 35,389 psi | 55% | 2743 fps | 98.9% |
| Vihtavuori N150 | <<locked>> | 86% | 31,256 psi | 49% | 2651 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 94% | 42,888 psi | 67% | 2959 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 42,844 psi | 67% | 2933 fps | 98.4% |
| Vihtavuori N540 | <<locked>> | 80% | 35,099 psi | 55% | 2756 fps | 98.4% |
| Vihtavuori N550 | <<locked>> | 94% | 43,178 psi | 68% | 3005 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 36,463 psi | 57% | 2779 fps | 95.8% |
| Winchester 748 | <<locked>> | 80% | 42,960 psi | 67% | 2976 fps | 99% |
| Winchester 760 | <<locked>> | 98% | 53,069 psi | 83% | 3196 fps | 95.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 45,890 psi | 72% | 3018 fps | 98.4% |
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 99 powders for .300 WSM loaded with the .308 | 135gr | CutEdge ER Raptor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,327 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,327 fps. Accurate 4350 gives the best case fill at 100 %, and 99 of the 99 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 54–90 %, leaving at least 10 % headroom. The 135.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, Alliant Reloder-16, Alliant Reloder-17 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 52, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 135gr | CutEdge ER 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.