Load Specifications
Bullet Manufacturer:Sellier & Bellot
Bullet Weight:180 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:1:12.0
Load data in caliber .300 WSM with .308 | 180gr | Sellier & Bellot XRG bullet and 105 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, 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>> | 82% | 56,927 psi | 89% | 2684 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 56,318 psi | 88% | 2713 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 55,854 psi | 88% | 2762 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,579 psi | 87% | 2726 fps | 98.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 47,021 psi | 74% | 2697 fps | 98.3% |
| Accurate 4064 | <<locked>> | 88% | 56,507 psi | 89% | 2762 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 56,637 psi | 89% | 2861 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 56,057 psi | 88% | 2795 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,884 psi | 89% | 2792 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 54,172 psi | 85% | 2841 fps | 97.2% |
| ADI Benchmark 8208 | <<locked>> | 82% | 54,810 psi | 86% | 2740 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,347 psi | 88% | 2710 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 55,999 psi | 88% | 2917 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 54,099 psi | 85% | 2838 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 57,493 psi | 90% | 2815 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 86% | 54,259 psi | 85% | 2789 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 57,159 psi | 90% | 2913 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 92% | 54,940 psi | 86% | 2890 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 53,330 psi | 84% | 2831 fps | 97.2% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2769 fps | 95.9% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 44,309 psi | 69% | 2720 fps | 99.9% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,841 psi | 61% | 2625 fps | 96.9% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 50,009 psi | 78% | 2897 fps | 99.8% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 55,811 psi | 87% | 2808 fps | 100% |
| Bofors RP3 | <<locked>> | 88% | 54,853 psi | 86% | 2785 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 46,934 psi | 74% | 2769 fps | 95.9% |
| Bofors RP7 | <<locked>> | 92% | 54,375 psi | 85% | 2759 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,260 psi | 88% | 2720 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 82% | 54,418 psi | 85% | 2769 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 55,434 psi | 87% | 2802 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 92% | 56,826 psi | 89% | 2877 fps | 99% |
| Hodgdon H4350 | <<locked>> | 96% | 57,072 psi | 89% | 2838 fps | 98.1% |
| Hodgdon H4895 | <<locked>> | 84% | 56,666 psi | 89% | 2802 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 57,537 psi | 90% | 2838 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 56,608 psi | 89% | 2838 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 55,709 psi | 87% | 2897 fps | 98.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,071 psi | 57% | 1703 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 56,623 psi | 89% | 2789 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 55,463 psi | 87% | 2759 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 55,767 psi | 87% | 2766 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 90% | 55,013 psi | 86% | 2746 fps | 98.7% |
| IMR 4350 | <<locked>> | 96% | 54,752 psi | 86% | 2789 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 56,130 psi | 88% | 2789 fps | 98.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 53,969 psi | 85% | 2808 fps | 99.9% |
| IMR 4895 | <<locked>> | 86% | 55,666 psi | 87% | 2815 fps | 100% |
| IMR 8208 XBR | <<locked>> | 82% | 54,810 psi | 86% | 2740 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 56,173 psi | 88% | 2766 fps | 100% |
| Lovex S060 | <<locked>> | 84% | 55,143 psi | 86% | 2717 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 56,579 psi | 89% | 2772 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 55,912 psi | 88% | 2785 fps | 99.5% |
| Lovex S070 | <<locked>> | 96% | 56,956 psi | 89% | 2825 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 39,117 psi | 61% | 2552 fps | 96.5% |
| Norma 201 | <<locked>> | 84% | 54,810 psi | 86% | 2740 fps | 100% |
| Norma 202 | <<locked>> | 84% | 55,390 psi | 87% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 88% | 57,029 psi | 89% | 2825 fps | 100% |
| Norma 204 | <<locked>> | 96% | 55,521 psi | 87% | 2838 fps | 97.3% |
| Norma MRPᴾ | <<locked>> | 100% | 49,632 psi | 78% | 2851 fps | 98% |
| Norma URP | <<locked>> | 96% | 55,245 psi | 87% | 2844 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 86% | 54,259 psi | 85% | 2802 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 57,580 psi | 90% | 2897 fps | 99.6% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,788 psi | 72% | 2717 fps | 96% |
| Ramshot TAC | <<locked>> | 82% | 54,824 psi | 86% | 2762 fps | 99.5% |
| Ramshot Wild Boar | <<locked>> | 82% | 54,766 psi | 86% | 2779 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,622 psi | 57% | 1742 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 55,405 psi | 87% | 2782 fps | 99.1% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 54,940 psi | 86% | 2854 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 54,694 psi | 86% | 2887 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 56,086 psi | 88% | 2881 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 55,114 psi | 86% | 2910 fps | 99.9% |
| Rottweil R 901 | <<locked>> | 82% | 55,695 psi | 87% | 2713 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 55,492 psi | 87% | 2740 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 54,708 psi | 86% | 2779 fps | 100% |
| Rottweil R 904ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 2808 fps | 96.4% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 52,272 psi | 82% | 2815 fps | 97.2% |
| Rottweil R 907 | <<locked>> | 92% | 54,375 psi | 85% | 2759 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 55,912 psi | 88% | 2785 fps | 99.5% |
| Shooters World Match Rifle | <<locked>> | 84% | 56,173 psi | 88% | 2766 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 56,579 psi | 89% | 2772 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,956 psi | 89% | 2825 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 56,217 psi | 88% | 2835 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 57,290 psi | 90% | 2795 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 84% | 54,302 psi | 85% | 2762 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 55,796 psi | 87% | 2671 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 56,434 psi | 88% | 2671 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,883 psi | 88% | 2740 fps | 98.8% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 51,779 psi | 81% | 2808 fps | 97% |
| Somchem S335 | <<locked>> | 84% | 55,492 psi | 87% | 2671 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 56,898 psi | 89% | 2785 fps | 100% |
| Somchem S355 | <<locked>> | 90% | 54,911 psi | 86% | 2776 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 57,450 psi | 90% | 2897 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 53,113 psi | 83% | 2795 fps | 98% |
| Unknown powder | <<locked>> | 94% | 56,188 psi | 88% | 2851 fps | 99.8% |
| Vihtavuori N130 | <<locked>> | 82% | 57,696 psi | 90% | 2657 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 55,854 psi | 88% | 2651 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 55,317 psi | 87% | 2697 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 55,172 psi | 86% | 2707 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,188 psi | 88% | 2756 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,594 psi | 89% | 2822 fps | 99.9% |
| Vihtavuori N540 | <<locked>> | 86% | 54,868 psi | 86% | 2733 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 56,985 psi | 89% | 2871 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 49,284 psi | 77% | 2795 fps | 99.9% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 57,638 psi | 90% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,826 psi | 89% | 2877 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 39,842 psi | 62% | 2753 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 55,361 psi | 87% | 2815 fps | 97.4% |
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% | 53,359 psi | 84% | 2638 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,688 psi | 73% | 2579 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 52,373 psi | 82% | 2713 fps | 100% |
| Accurate 2700 | <<locked>> | 82% | 43,105 psi | 68% | 2523 fps | 95.5% |
| Accurate 3100 | <<locked>> | 92% | 35,810 psi | 56% | 2480 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 44,150 psi | 69% | 2582 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 32,880 psi | 52% | 2428 fps | 96.2% |
| ADI AR 2206H | <<locked>> | 80% | 49,472 psi | 78% | 2694 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 42,090 psi | 66% | 2549 fps | 99% |
| ADI AR 2209 | <<locked>> | 96% | 47,587 psi | 75% | 2726 fps | 95.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,488 psi | 81% | 2690 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 52,707 psi | 83% | 2664 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 45,353 psi | 71% | 2740 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 44,614 psi | 70% | 2674 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,003 psi | 66% | 2569 fps | 99.8% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,078 psi | 71% | 2635 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 32,663 psi | 51% | 2434 fps | 96.2% |
| Alliant Reloder-17 | 54 gr | 80% | 36,579 psi | 57% | 2559 fps | 99% |
| Alliant Reloder-19 | <<locked>> | 96% | 46,934 psi | 74% | 2720 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 98% | 44,005 psi | 69% | 2713 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 84% | 27,035 psi | 42% | 2300 fps | 95.2% |
| Alliant Reloder-25 | <<locked>> | 98% | 36,535 psi | 57% | 2569 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 88% | 32,851 psi | 51% | 2523 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 48,820 psi | 77% | 2700 fps | 99.6% |
| Bofors RP3 | <<locked>> | 80% | 42,047 psi | 66% | 2579 fps | 99.8% |
| Bofors RP5 | <<locked>> | 98% | 44,005 psi | 69% | 2713 fps | 95% |
| Bofors RP7 | <<locked>> | 84% | 42,656 psi | 67% | 2556 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,910 psi | 83% | 2674 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 50,807 psi | 80% | 2717 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 42,699 psi | 67% | 2585 fps | 98.4% |
| Hodgdon H414 | <<locked>> | 82% | 40,495 psi | 63% | 2595 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 88% | 44,802 psi | 70% | 2631 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 49,951 psi | 78% | 2700 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 30,211 psi | 47% | 2339 fps | 97% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 43,555 psi | 68% | 2635 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 86% | 41,989 psi | 66% | 2651 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,803 psi | 42% | 1519 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 44,309 psi | 69% | 2592 fps | 99.8% |
| IMR 3031 | <<locked>> | 80% | 46,021 psi | 72% | 2621 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 41,234 psi | 65% | 2523 fps | 99% |
| IMR 4166 Enduron | <<locked>> | 80% | 40,799 psi | 64% | 2493 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 42,801 psi | 67% | 2582 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 39,015 psi | 61% | 2484 fps | 95% |
| IMR 4831 | <<locked>> | 82% | 30,806 psi | 48% | 2359 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,224 psi | 72% | 2664 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 80% | 51,488 psi | 81% | 2690 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 49,371 psi | 77% | 2671 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 48,921 psi | 77% | 2625 fps | 99.9% |
| Lovex S062 | <<locked>> | 80% | 44,338 psi | 69% | 2582 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 36,637 psi | 57% | 2438 fps | 95.9% |
| Lovex S070 | <<locked>> | 84% | 39,450 psi | 62% | 2516 fps | 95.6% |
| Lovex S071 | <<locked>> | 98% | 36,535 psi | 57% | 2497 fps | 95.6% |
| Norma 201 | <<locked>> | 80% | 48,559 psi | 76% | 2641 fps | 100% |
| Norma 202 | <<locked>> | 80% | 48,776 psi | 76% | 2641 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,454 psi | 70% | 2625 fps | 99.7% |
| Norma 204 | <<locked>> | 90% | 45,397 psi | 71% | 2667 fps | 95% |
| Norma MRP | <<locked>> | 94% | 40,393 psi | 63% | 2667 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,938 psi | 52% | 2425 fps | 96.1% |
| Ramshot Big Game | <<locked>> | 80% | 44,135 psi | 69% | 2638 fps | 99.6% |
| Ramshot Hunter | <<locked>> | 84% | 36,492 psi | 57% | 2516 fps | 95.4% |
| Ramshot Magnum | <<locked>> | 98% | 42,511 psi | 67% | 2654 fps | 95% |
| Ramshot TAC | <<locked>> | 80% | 51,372 psi | 81% | 2710 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 51,198 psi | 80% | 2726 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,369 psi | 43% | 1558 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,960 psi | 67% | 2569 fps | 97% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,153 psi | 75% | 2746 fps | 99.8% |
| ReloadSwiss RS 60 | 54 gr | 80% | 38,885 psi | 61% | 2618 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 32,401 psi | 51% | 2438 fps | 95.6% |
| ReloadSwiss RS 70 | 56.2 gr | 82% | 34,345 psi | 54% | 2497 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 52,576 psi | 82% | 2671 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,108 psi | 72% | 2595 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 39,624 psi | 62% | 2526 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 98% | 52,649 psi | 83% | 2759 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 96% | 45,701 psi | 72% | 2703 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 84% | 42,656 psi | 67% | 2556 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 36,637 psi | 57% | 2438 fps | 95.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,371 psi | 77% | 2671 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,338 psi | 69% | 2582 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 39,450 psi | 62% | 2516 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 40,596 psi | 64% | 2575 fps | 99.2% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,966 psi | 78% | 2687 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,935 psi | 75% | 2664 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,516 psi | 78% | 2582 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,582 psi | 65% | 2454 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 38,159 psi | 60% | 2431 fps | 95% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 45,266 psi | 71% | 2697 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 49,284 psi | 77% | 2585 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 49,705 psi | 78% | 2680 fps | 99.9% |
| Somchem S355 | <<locked>> | 80% | 40,321 psi | 63% | 2530 fps | 99.4% |
| Somchem S365 | <<locked>> | 80% | 29,646 psi | 46% | 2382 fps | 98.2% |
| Somchem S385 | <<locked>> | 92% | 40,959 psi | 64% | 2582 fps | 95.2% |
| Unknown powder | <<locked>> | 80% | 35,679 psi | 56% | 2477 fps | 96.3% |
| Vihtavuori N130 | <<locked>> | 80% | 54,389 psi | 85% | 2615 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 46,731 psi | 73% | 2523 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 46,064 psi | 72% | 2566 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 45,803 psi | 72% | 2572 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 34,534 psi | 54% | 2388 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 35,781 psi | 56% | 2457 fps | 97% |
| Vihtavuori N540 | <<locked>> | 80% | 45,252 psi | 71% | 2589 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,274 psi | 57% | 2497 fps | 97% |
| Vihtavuori N555 | <<locked>> | 84% | 29,211 psi | 46% | 2375 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,808 psi | 53% | 2402 fps | 98.4% |
| Winchester 760 | <<locked>> | 82% | 40,495 psi | 63% | 2595 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 88% | 27,079 psi | 42% | 2379 fps | 95.8% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,790 psi | 75% | 2697 fps | 95.7% |
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 105 powders for .300 WSM loaded with the .308 | 180gr | Sellier & Bellot XRG. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 2,917 fps; across all powders the maximum-charge window runs from 1,703 fps to 2,917 fps. Accurate 3100 gives the best case fill at 100 %, and 105 of the 105 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, ADI AR 2209, Alliant Power Pro Varmint 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 70, Alliant Reloder-17, ReloadSwiss RS 60 rank at the top here: for .300 WSM with the .308 | 180gr | Sellier & Bellot XRG 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.