Load Specifications
Bullet:.308 | 168gr | Norma Diamond
Bullet Manufacturer:Norma
Bullet Weight:168 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 | 168gr | Norma Diamond bullet and 102 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Hodgdon Superformance 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>> | 82% | 55,941 psi | 88% | 2782 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 55,187 psi | 86% | 2812 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 54,766 psi | 86% | 2861 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,882 psi | 86% | 2822 fps | 97.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 45,919 psi | 72% | 2776 fps | 97.7% |
| Accurate 4064 | <<locked>> | 88% | 55,274 psi | 87% | 2861 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 55,521 psi | 87% | 2956 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 84% | 55,013 psi | 86% | 2887 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 56,173 psi | 88% | 2894 fps | 100% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 53,345 psi | 84% | 2930 fps | 96.5% |
| ADI Benchmark 8208 | <<locked>> | 84% | 57,334 psi | 90% | 2887 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 55,288 psi | 87% | 2812 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 54,882 psi | 86% | 3015 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 53,200 psi | 83% | 2930 fps | 96.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 56,304 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 56,913 psi | 89% | 2940 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 56,304 psi | 88% | 3012 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 57,740 psi | 90% | 3045 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 52,417 psi | 82% | 2920 fps | 96.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 43,265 psi | 68% | 2802 fps | 99.7% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 38,087 psi | 60% | 2697 fps | 96% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 48,921 psi | 77% | 2982 fps | 99.4% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 54,853 psi | 86% | 2907 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 57,290 psi | 90% | 2930 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 57,087 psi | 89% | 2907 fps | 98.2% |
| Hodgdon Benchmark | <<locked>> | 82% | 55,303 psi | 87% | 2818 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 57,174 psi | 90% | 2920 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 57,232 psi | 90% | 2864 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 54,389 psi | 85% | 2894 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 92% | 55,709 psi | 87% | 2969 fps | 98.6% |
| Hodgdon H4350 | <<locked>> | 96% | 56,362 psi | 88% | 2936 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 84% | 55,608 psi | 87% | 2900 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 56,449 psi | 88% | 2933 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 88% | 55,593 psi | 87% | 2936 fps | 100% |
| Hodgdon Superformance | <<locked>> | 94% | 54,679 psi | 86% | 2986 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,955 psi | 56% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 55,811 psi | 87% | 2887 fps | 100% |
| IMR 3031 | <<locked>> | 86% | 54,563 psi | 86% | 2861 fps | 100% |
| IMR 4064 | <<locked>> | 90% | 54,926 psi | 86% | 2864 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 57,522 psi | 90% | 2890 fps | 98.7% |
| IMR 4350 | <<locked>> | 98% | 57,580 psi | 90% | 2936 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 92% | 55,172 psi | 86% | 2881 fps | 98.3% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,997 psi | 83% | 2900 fps | 99.8% |
| IMR 4895 | <<locked>> | 86% | 54,694 psi | 86% | 2913 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 57,334 psi | 90% | 2887 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 55,027 psi | 86% | 2864 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 57,696 psi | 90% | 2867 fps | 100% |
| Lovex S062 | <<locked>> | 88% | 55,637 psi | 87% | 2871 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 54,781 psi | 86% | 2874 fps | 99.2% |
| Lovex S070 | <<locked>> | 96% | 56,086 psi | 88% | 2917 fps | 98.7% |
| Norma 201 | <<locked>> | 86% | 57,246 psi | 90% | 2884 fps | 100% |
| Norma 202 | <<locked>> | 84% | 54,418 psi | 85% | 2835 fps | 100% |
| Norma 203B | <<locked>> | 88% | 56,130 psi | 88% | 2923 fps | 100% |
| Norma 204 | <<locked>> | 96% | 54,665 psi | 86% | 2930 fps | 96.7% |
| Norma MRPᴾ | <<locked>> | 100% | 48,559 psi | 76% | 2933 fps | 97.3% |
| Norma URP | <<locked>> | 96% | 54,360 psi | 85% | 2940 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 88% | 56,739 psi | 89% | 2949 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 56,753 psi | 89% | 2995 fps | 99.3% |
| Ramshot TAC | <<locked>> | 84% | 57,537 psi | 90% | 2913 fps | 99.6% |
| Ramshot Wild Boar | <<locked>> | 84% | 57,595 psi | 90% | 2930 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,434 psi | 57% | 1821 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 54,607 psi | 86% | 2874 fps | 98.8% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 57,696 psi | 90% | 3005 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 57,377 psi | 90% | 3038 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 96% | 55,259 psi | 87% | 2979 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 54,302 psi | 85% | 3005 fps | 99.7% |
| Rottweil R 901 | <<locked>> | 82% | 54,766 psi | 86% | 2815 fps | 100% |
| Rottweil R 902 | <<locked>> | 86% | 54,491 psi | 85% | 2835 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 57,174 psi | 90% | 2923 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 51,097 psi | 80% | 2897 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 94% | 57,087 psi | 89% | 2907 fps | 98.2% |
| Shooters World Long Rifle | <<locked>> | 94% | 54,781 psi | 86% | 2874 fps | 99.2% |
| Shooters World Match Rifle | <<locked>> | 84% | 55,027 psi | 86% | 2864 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 55,637 psi | 87% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 56,086 psi | 88% | 2917 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 55,201 psi | 87% | 2933 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 56,275 psi | 88% | 2890 fps | 99.7% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 56,869 psi | 89% | 2910 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 84% | 54,926 psi | 86% | 2769 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 55,361 psi | 87% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 55,071 psi | 86% | 2831 fps | 98.3% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 50,604 psi | 79% | 2894 fps | 96.3% |
| Somchem S335 | <<locked>> | 84% | 54,592 psi | 86% | 2769 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 55,912 psi | 88% | 2881 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 57,188 psi | 90% | 2920 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 56,347 psi | 88% | 2992 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2881 fps | 97.4% |
| Unknown powder | <<locked>> | 94% | 55,100 psi | 86% | 2943 fps | 99.6% |
| Vihtavuori N130 | <<locked>> | 82% | 57,000 psi | 89% | 2759 fps | 100% |
| Vihtavuori N133 | <<locked>> | 86% | 54,752 psi | 86% | 2749 fps | 100% |
| Vihtavuori N135 | <<locked>> | 86% | 54,346 psi | 85% | 2795 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 57,508 psi | 90% | 2851 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,158 psi | 86% | 2851 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 55,637 psi | 87% | 2913 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 56,826 psi | 89% | 2890 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 57,217 psi | 90% | 2877 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 55,985 psi | 88% | 2963 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 48,022 psi | 75% | 2877 fps | 99.6% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 56,753 psi | 89% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 55,709 psi | 87% | 2969 fps | 98.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 38,783 psi | 61% | 2825 fps | 99.9% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2904 fps | 96.7% |
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% | 52,576 psi | 82% | 2736 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 45,295 psi | 71% | 2664 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 51,169 psi | 80% | 2808 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 45,179 psi | 71% | 2657 fps | 95.5% |
| Accurate 3100 | <<locked>> | 94% | 37,246 psi | 58% | 2605 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 42,844 psi | 67% | 2664 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 31,850 psi | 50% | 2493 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 48,501 psi | 76% | 2782 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 80% | 41,191 psi | 65% | 2631 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 98% | 50,096 psi | 79% | 2874 fps | 95.8% |
| ADI Benchmark 8208 | <<locked>> | 80% | 50,575 psi | 79% | 2785 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 51,779 psi | 81% | 2766 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 44,498 psi | 70% | 2828 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 46,731 psi | 73% | 2812 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 41,147 psi | 64% | 2654 fps | 99.5% |
| Alliant Reloder-15 | <<locked>> | 80% | 44,121 psi | 69% | 2720 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 31,966 psi | 50% | 2507 fps | 95.2% |
| Alliant Reloder-17 | 56.4 gr | 80% | 35,679 psi | 56% | 2635 fps | 98.4% |
| Alliant Reloder-19 | <<locked>> | 98% | 49,037 psi | 77% | 2858 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 86% | 27,992 psi | 44% | 2418 fps | 95% |
| Alliant Reloder-25 | <<locked>> | 98% | 35,839 psi | 56% | 2641 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 90% | 34,330 psi | 54% | 2654 fps | 95.5% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 47,935 psi | 75% | 2792 fps | 99.3% |
| Bofors RP3 | <<locked>> | 80% | 41,133 psi | 64% | 2664 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 44,469 psi | 70% | 2690 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 52,098 psi | 82% | 2769 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 49,879 psi | 78% | 2812 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 53,737 psi | 84% | 2815 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 41,800 psi | 66% | 2667 fps | 97.8% |
| Hodgdon H414 | <<locked>> | 84% | 42,395 psi | 66% | 2733 fps | 95.8% |
| Hodgdon H4350 | <<locked>> | 90% | 46,775 psi | 73% | 2772 fps | 95.5% |
| Hodgdon H4895 | <<locked>> | 80% | 48,979 psi | 77% | 2792 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 29,530 psi | 46% | 2411 fps | 96.2% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 42,685 psi | 67% | 2720 fps | 99.7% |
| Hodgdon Superformance | 65.6 gr | 88% | 44,019 psi | 69% | 2792 fps | 95.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,687 psi | 42% | 1588 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 43,598 psi | 68% | 2684 fps | 99.6% |
| IMR 3031 | <<locked>> | 80% | 45,107 psi | 71% | 2717 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 40,422 psi | 63% | 2608 fps | 98.6% |
| IMR 4166 Enduron | <<locked>> | 82% | 42,554 psi | 67% | 2625 fps | 95.7% |
| IMR 4350 | <<locked>> | 88% | 42,119 psi | 66% | 2667 fps | 95% |
| IMR 4451 Enduron | <<locked>> | 82% | 40,669 psi | 64% | 2615 fps | 95% |
| IMR 4831 | <<locked>> | 84% | 31,966 psi | 50% | 2480 fps | 95.3% |
| IMR 4895 | <<locked>> | 80% | 45,208 psi | 71% | 2753 fps | 99.6% |
| IMR 8208 XBR | <<locked>> | 80% | 50,575 psi | 79% | 2785 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 48,066 psi | 75% | 2759 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 47,964 psi | 75% | 2713 fps | 99.8% |
| Lovex S062 | <<locked>> | 80% | 43,294 psi | 68% | 2667 fps | 99.9% |
| Lovex S065 | <<locked>> | 80% | 35,650 psi | 56% | 2507 fps | 95% |
| Lovex S070 | <<locked>> | 86% | 40,988 psi | 64% | 2644 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 47,413 psi | 74% | 2730 fps | 100% |
| Norma 202 | <<locked>> | 80% | 47,892 psi | 75% | 2736 fps | 100% |
| Norma 203B | <<locked>> | 80% | 43,468 psi | 68% | 2710 fps | 99.4% |
| Norma 204 | <<locked>> | 92% | 47,703 psi | 75% | 2812 fps | 95.1% |
| Norma MRP | <<locked>> | 96% | 42,395 psi | 66% | 2808 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 32,111 psi | 50% | 2497 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 43,294 psi | 68% | 2723 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 38,087 psi | 60% | 2648 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 50,502 psi | 79% | 2802 fps | 98.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 50,357 psi | 79% | 2818 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,195 psi | 43% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 42,047 psi | 66% | 2651 fps | 96.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 47,094 psi | 74% | 2835 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 37,956 psi | 59% | 2697 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 33,895 psi | 53% | 2569 fps | 95.6% |
| ReloadSwiss RS 70 | 60.2 gr | 84% | 36,027 psi | 56% | 2631 fps | 95.6% |
| Rottweil R 901 | <<locked>> | 80% | 51,547 psi | 81% | 2766 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 45,310 psi | 71% | 2684 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 38,653 psi | 61% | 2605 fps | 99% |
| Rottweil R 905 | <<locked>> | 98% | 47,848 psi | 75% | 2841 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 86% | 44,469 psi | 70% | 2690 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 35,650 psi | 56% | 2507 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 48,066 psi | 75% | 2759 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 43,294 psi | 68% | 2667 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 86% | 40,988 psi | 64% | 2644 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 39,755 psi | 62% | 2657 fps | 98.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 49,023 psi | 77% | 2776 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 47,079 psi | 74% | 2753 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 48,675 psi | 76% | 2677 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 40,770 psi | 64% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 42,525 psi | 67% | 2615 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 47,384 psi | 74% | 2835 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 48,211 psi | 76% | 2674 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 48,805 psi | 76% | 2769 fps | 99.8% |
| Somchem S355 | <<locked>> | 80% | 39,262 psi | 62% | 2608 fps | 99% |
| Somchem S365 | <<locked>> | 80% | 28,819 psi | 45% | 2448 fps | 97.4% |
| Somchem S385 | <<locked>> | 94% | 42,670 psi | 67% | 2710 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 34,824 psi | 55% | 2552 fps | 95.4% |
| Vihtavuori N130 | <<locked>> | 80% | 53,621 psi | 84% | 2717 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 45,832 psi | 72% | 2618 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,078 psi | 71% | 2657 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 44,947 psi | 70% | 2664 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,692 psi | 53% | 2461 fps | 98.8% |
| Vihtavuori N160 | <<locked>> | 80% | 34,809 psi | 55% | 2530 fps | 96.1% |
| Vihtavuori N530 | <<locked>> | 80% | 53,374 psi | 84% | 2838 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 44,527 psi | 70% | 2680 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 35,433 psi | 56% | 2572 fps | 96.2% |
| Vihtavuori N555 | <<locked>> | 86% | 30,255 psi | 47% | 2493 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 33,098 psi | 52% | 2474 fps | 97.7% |
| Winchester 760 | <<locked>> | 84% | 42,395 psi | 66% | 2733 fps | 95.8% |
| Winchester StaBALL HD | <<locked>> | 90% | 28,065 psi | 44% | 2493 fps | 95.6% |
| Winchester Supreme 780 | <<locked>> | 96% | 47,079 psi | 74% | 2782 fps | 95% |
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 102 powders for .300 WSM loaded with the .308 | 168gr | Norma Diamond. Alliant Reloder-17 delivers the highest muzzle velocity at 3,045 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,045 fps. Accurate 3100 gives the best case fill at 100 %, and 102 of the 102 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 168.0 gr projectile in 0.308" calls for a 1:13.5 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, Hodgdon Superformance, Alliant Reloder-17 rank at the top here: for .300 WSM with the .308 | 168gr | Norma Diamond 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.