Load Specifications
Bullet Manufacturer:Prvi Partizan
Bullet Weight:139 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:1:14.5
Load data in caliber .300 WSM with .308 | 139gr | Prvi Partizan FMJ bullet and 101 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, Alliant Reloder-17 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.
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% | 56,579 psi | 89% | 3068 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,969 psi | 86% | 3087 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,187 psi | 86% | 3087 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 55,492 psi | 87% | 3140 fps | 100% |
| Accurate 2700 | <<locked>> | 94% | 55,941 psi | 88% | 3071 fps | 95.8% |
| Accurate 4064 | <<locked>> | 92% | 54,998 psi | 86% | 3130 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3202 fps | 98.9% |
| ADI AR 2206H | <<locked>> | 88% | 55,608 psi | 87% | 3163 fps | 99.6% |
| ADI AR 2208 | <<locked>> | 94% | 56,811 psi | 89% | 3163 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 54,853 psi | 86% | 3117 fps | 99.9% |
| Alliant AR-Comp | <<locked>> | 86% | 55,216 psi | 87% | 3094 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,478 psi | 89% | 3232 fps | 99.9% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,564 psi | 87% | 3287 fps | 99.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,594 psi | 89% | 3186 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 55,956 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,363 psi | 90% | 3209 fps | 99.6% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,736 psi | 83% | 3205 fps | 99% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,983 psi | 85% | 3251 fps | 99.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,608 psi | 59% | 2897 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,579 psi | 87% | 3173 fps | 99.1% |
| Bofors RP3 | <<locked>> | 94% | 57,537 psi | 90% | 3202 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,638 psi | 90% | 3159 fps | 96.4% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,623 psi | 89% | 3100 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,056 psi | 85% | 3140 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,028 psi | 88% | 3245 fps | 99.5% |
| Hodgdon H322 | <<locked>> | 84% | 54,636 psi | 86% | 3104 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,911 psi | 86% | 3156 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 96% | 55,854 psi | 88% | 3222 fps | 96.9% |
| Hodgdon H4895 | <<locked>> | 88% | 56,202 psi | 88% | 3176 fps | 99.9% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,008 psi | 77% | 3074 fps | 99.3% |
| Hodgdon LEVERevolution | <<locked>> | 92% | 55,709 psi | 87% | 3209 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,201 psi | 87% | 3232 fps | 96.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,244 psi | 55% | 1952 fps | 100% |
| Hodgdon VARGET | <<locked>> | 92% | 56,304 psi | 88% | 3159 fps | 99.8% |
| IMR 3031 | <<locked>> | 90% | 54,433 psi | 85% | 3140 fps | 100% |
| IMR 4064 | <<locked>> | 94% | 55,347 psi | 87% | 3130 fps | 99.4% |
| IMR 4166 Enduron | <<locked>> | 94% | 54,882 psi | 86% | 3094 fps | 96.5% |
| IMR 4198 | <<locked>> | 82% | 55,985 psi | 88% | 3028 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,157 psi | 85% | 3123 fps | 95.8% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,130 psi | 88% | 3140 fps | 96.7% |
| IMR 4831ᴾ | <<locked>> | 100% | 46,021 psi | 72% | 3028 fps | 97.5% |
| IMR 4895 | <<locked>> | 90% | 55,100 psi | 86% | 3182 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 86% | 54,853 psi | 86% | 3117 fps | 99.9% |
| Lovex D073.5 | <<locked>> | 82% | 54,911 psi | 86% | 3097 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,492 psi | 87% | 3140 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,376 psi | 87% | 3091 fps | 99.6% |
| Lovex S062 | <<locked>> | 92% | 56,057 psi | 88% | 3143 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,317 psi | 87% | 3133 fps | 97.9% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3163 fps | 97% |
| Norma 201 | <<locked>> | 88% | 54,375 psi | 85% | 3104 fps | 99.9% |
| Norma 202 | <<locked>> | 88% | 55,056 psi | 86% | 3114 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,507 psi | 89% | 3192 fps | 99.7% |
| Norma URPᴾ | <<locked>> | 100% | 53,751 psi | 84% | 3186 fps | 98.7% |
| Ramshot Big Game | <<locked>> | 92% | 57,246 psi | 90% | 3219 fps | 99.7% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,794 psi | 83% | 3176 fps | 97.1% |
| Ramshot TAC | <<locked>> | 86% | 55,259 psi | 87% | 3127 fps | 98.1% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,665 psi | 86% | 3146 fps | 99.5% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,840 psi | 88% | 3114 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,563 psi | 56% | 1995 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 84% | 57,740 psi | 90% | 3153 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,143 psi | 86% | 3130 fps | 97.2% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 53,983 psi | 85% | 3219 fps | 99.2% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,609 psi | 90% | 3320 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,592 psi | 86% | 3225 fps | 98.7% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,621 psi | 86% | 3251 fps | 98.4% |
| Rottweil R 901 | <<locked>> | 86% | 55,390 psi | 87% | 3094 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,940 psi | 86% | 3104 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,072 psi | 89% | 3189 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 98% | 57,638 psi | 90% | 3159 fps | 96.4% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,317 psi | 87% | 3133 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,492 psi | 87% | 3140 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,057 psi | 88% | 3143 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,028 psi | 88% | 3163 fps | 97% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,566 psi | 90% | 3120 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,463 psi | 87% | 3199 fps | 99.6% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 56,840 psi | 89% | 3097 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,232 psi | 90% | 3159 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 90% | 57,682 psi | 90% | 3186 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,246 psi | 88% | 3051 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,333 psi | 88% | 3045 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,898 psi | 88% | 3081 fps | 96.7% |
| Somchem S321 | <<locked>> | 84% | 56,144 psi | 88% | 3150 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,317 psi | 87% | 3045 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,724 psi | 89% | 3153 fps | 99.7% |
| Somchem S355 | <<locked>> | 96% | 57,392 psi | 90% | 3186 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,225 psi | 76% | 3133 fps | 99.9% |
| Unknown powder | <<locked>> | 98% | 55,027 psi | 86% | 3199 fps | 98.4% |
| Vihtavuori N130 | <<locked>> | 84% | 54,563 psi | 86% | 2999 fps | 100% |
| Vihtavuori N133 | <<locked>> | 90% | 55,564 psi | 87% | 3028 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,578 psi | 86% | 3074 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 54,665 psi | 86% | 3081 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 55,201 psi | 87% | 3110 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 55,738 psi | 87% | 3169 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 84% | 54,389 psi | 85% | 3120 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,505 psi | 85% | 3107 fps | 100% |
| Vihtavuori N550 | <<locked>> | 98% | 56,028 psi | 88% | 3225 fps | 98.9% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,915 psi | 64% | 2986 fps | 96.9% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,392 psi | 90% | 3169 fps | 100% |
| Winchester 748 | <<locked>> | 84% | 55,811 psi | 87% | 3176 fps | 100% |
| Winchester 760 | <<locked>> | 96% | 55,854 psi | 88% | 3222 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,492 psi | 87% | 3163 fps | 99.8% |
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% | 46,818 psi | 73% | 2913 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,445 psi | 81% | 3031 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,552 psi | 62% | 2818 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 44,918 psi | 70% | 2963 fps | 99.9% |
| Accurate 2700 | <<locked>> | 92% | 52,185 psi | 82% | 3009 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 37,333 psi | 59% | 2802 fps | 99.6% |
| Accurate 4350 | <<locked>> | 90% | 38,551 psi | 60% | 2887 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 43,134 psi | 68% | 2927 fps | 97.9% |
| ADI AR 2208 | <<locked>> | 80% | 36,709 psi | 58% | 2759 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,208 psi | 71% | 2943 fps | 99.2% |
| Alliant AR-Comp | <<locked>> | 80% | 45,150 psi | 71% | 2940 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,794 psi | 83% | 3169 fps | 99.7% |
| Alliant Power Pro 2000-MR | 58.6 gr | 80% | 39,146 psi | 61% | 2940 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,172 psi | 57% | 2782 fps | 97% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,634 psi | 82% | 3022 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,914 psi | 61% | 2848 fps | 96.2% |
| Alliant Reloder-16 | <<locked>> | 90% | 38,580 psi | 60% | 2900 fps | 95.4% |
| Alliant Reloder-17 | 59.2 gr | 82% | 33,533 psi | 53% | 2792 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 98% | 35,433 psi | 56% | 2838 fps | 96% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,395 psi | 66% | 2923 fps | 96.6% |
| Bofors RP3 | <<locked>> | 80% | 35,766 psi | 56% | 2782 fps | 97% |
| Bofors RP7 | <<locked>> | 96% | 54,027 psi | 85% | 3100 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,079 psi | 74% | 2936 fps | 99.7% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,019 psi | 69% | 2963 fps | 99.4% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,515 psi | 76% | 3114 fps | 98.5% |
| Hodgdon H322 | <<locked>> | 80% | 47,979 psi | 75% | 2995 fps | 100% |
| Hodgdon H380 | <<locked>> | 84% | 41,945 psi | 66% | 2907 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 92% | 48,617 psi | 76% | 3094 fps | 95.2% |
| Hodgdon H4895 | <<locked>> | 80% | 43,540 psi | 68% | 2940 fps | 98.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 33,301 psi | 52% | 2726 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 37,188 psi | 58% | 2844 fps | 97.4% |
| Hodgdon Superformance | <<locked>> | 96% | 51,387 psi | 81% | 3159 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,092 psi | 41% | 1742 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 38,725 psi | 61% | 2818 fps | 97.3% |
| IMR 3031 | <<locked>> | 80% | 39,320 psi | 62% | 2871 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 36,027 psi | 56% | 2736 fps | 95.3% |
| IMR 4166 Enduron | <<locked>> | 90% | 48,762 psi | 76% | 2979 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 52,866 psi | 83% | 2986 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 51,010 psi | 80% | 3068 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 92% | 49,429 psi | 77% | 3018 fps | 95.1% |
| IMR 4831 | <<locked>> | 94% | 37,927 psi | 59% | 2854 fps | 95.2% |
| IMR 4895 | <<locked>> | 80% | 39,856 psi | 62% | 2884 fps | 97.2% |
| IMR 8208 XBR | <<locked>> | 80% | 45,208 psi | 71% | 2943 fps | 99.2% |
| Lovex D073.5 | <<locked>> | 80% | 51,198 psi | 80% | 3038 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,221 psi | 66% | 2907 fps | 99.7% |
| Lovex S060 | <<locked>> | 80% | 43,279 psi | 68% | 2864 fps | 98% |
| Lovex S062 | <<locked>> | 80% | 38,363 psi | 60% | 2802 fps | 98% |
| Lovex S065 | <<locked>> | 90% | 43,192 psi | 68% | 2904 fps | 95.2% |
| Lovex S070 | <<locked>> | 96% | 49,443 psi | 77% | 3045 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 42,264 psi | 66% | 2877 fps | 98.8% |
| Norma 202 | <<locked>> | 80% | 42,511 psi | 67% | 2894 fps | 99.9% |
| Norma 203B | <<locked>> | 80% | 38,305 psi | 60% | 2835 fps | 96.7% |
| Norma URP | <<locked>> | 90% | 38,682 psi | 61% | 2884 fps | 95.2% |
| Ramshot Big Game | <<locked>> | 80% | 37,826 psi | 59% | 2844 fps | 96.3% |
| Ramshot Hunter | <<locked>> | 96% | 46,296 psi | 73% | 3054 fps | 95.6% |
| Ramshot TAC | <<locked>> | 80% | 45,194 psi | 71% | 2936 fps | 95.9% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,643 psi | 70% | 2963 fps | 98.2% |
| Ramshot X-Terminator | <<locked>> | 80% | 48,878 psi | 77% | 2992 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,469 psi | 41% | 1788 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,749 psi | 80% | 3038 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 48,544 psi | 76% | 3012 fps | 95.8% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,669 psi | 64% | 2956 fps | 96.7% |
| ReloadSwiss RS 60 | 57.7 gr | 80% | 33,315 psi | 52% | 2802 fps | 97.8% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 41,118 psi | 64% | 2966 fps | 95.8% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 44,411 psi | 70% | 3045 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 46,311 psi | 73% | 2940 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,350 psi | 63% | 2831 fps | 98.4% |
| Rottweil R 903 | <<locked>> | 80% | 33,620 psi | 53% | 2717 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 96% | 54,027 psi | 85% | 3100 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 43,192 psi | 68% | 2904 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,221 psi | 66% | 2907 fps | 99.7% |
| Shooters World Precision | <<locked>> | 80% | 38,363 psi | 60% | 2802 fps | 98% |
| Shooters World SW4350 | <<locked>> | 96% | 49,443 psi | 77% | 3045 fps | 95.6% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,650 psi | 84% | 3058 fps | 99.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,650 psi | 54% | 2769 fps | 95.2% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,388 psi | 84% | 3045 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,410 psi | 68% | 2907 fps | 96% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,698 psi | 65% | 2890 fps | 97.5% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,613 psi | 68% | 2841 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,201 psi | 57% | 2687 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 48,849 psi | 77% | 2959 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 48,994 psi | 77% | 3028 fps | 99.7% |
| Somchem S335 | <<locked>> | 80% | 43,279 psi | 68% | 2841 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,149 psi | 68% | 2907 fps | 97.8% |
| Somchem S355 | <<locked>> | 80% | 34,534 psi | 54% | 2726 fps | 95.9% |
| Somchem S365 | <<locked>> | 86% | 30,356 psi | 48% | 2703 fps | 95.6% |
| Unknown powder | <<locked>> | 90% | 42,279 psi | 66% | 2956 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 48,312 psi | 76% | 2904 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 41,220 psi | 65% | 2792 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,508 psi | 62% | 2818 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 39,842 psi | 62% | 2815 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 80% | 29,428 psi | 46% | 2569 fps | 95.5% |
| Vihtavuori N160 | <<locked>> | 88% | 39,769 psi | 62% | 2867 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 47,601 psi | 75% | 3002 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 39,392 psi | 62% | 2828 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 88% | 40,292 psi | 63% | 2917 fps | 95.5% |
| Vihtavuori N555 | <<locked>> | 96% | 35,781 psi | 56% | 2864 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 33,504 psi | 53% | 2690 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 48,443 psi | 76% | 3051 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 48,617 psi | 76% | 3094 fps | 95.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,503 psi | 81% | 3097 fps | 99.6% |
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 101 powders for .300 WSM loaded with the .308 | 139gr | Prvi Partizan FMJ. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,320 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,320 fps. Accurate 4350 gives the best case fill at 100 %, and 101 of the 101 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 139.0 gr projectile in 0.308" calls for a 1:14.5 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, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 139gr | Prvi Partizan FMJ 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.