Load Specifications
Bullet:.308 | 159gr | Hasler ARIETE
Bullet Manufacturer:Hasler
Bullet Weight:159 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:1:11.0
Load data in caliber .300 WSM with .308 | 159gr | Hasler ARIETE bullet and 103 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-17 and Alliant Power Pro 2000-MR.
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% | 57,087 psi | 89% | 2867 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 55,506 psi | 87% | 2897 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 55,477 psi | 87% | 2890 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,027 psi | 85% | 2910 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,463 psi | 87% | 2894 fps | 96.8% |
| Accurate 4064 | <<locked>> | 92% | 55,361 psi | 87% | 2936 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 55,738 psi | 87% | 3025 fps | 99.6% |
| ADI AR 2206H | <<locked>> | 88% | 56,623 psi | 89% | 2979 fps | 100% |
| ADI AR 2208 | <<locked>> | 94% | 57,493 psi | 90% | 2972 fps | 99.8% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,608 psi | 87% | 2930 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,449 psi | 88% | 2900 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,508 psi | 90% | 3038 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,391 psi | 88% | 3100 fps | 99.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,392 psi | 90% | 2995 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,753 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,447 psi | 85% | 2966 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,563 psi | 84% | 3028 fps | 99.6% |
| Alliant Reloder-17 | <<locked>> | 96% | 54,737 psi | 86% | 3068 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,956 psi | 59% | 2743 fps | 98.2% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,380 psi | 66% | 2904 fps | 97.3% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,623 psi | 89% | 2995 fps | 99.7% |
| Bofors RP3 | <<locked>> | 92% | 54,462 psi | 85% | 2959 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 54,824 psi | 86% | 2927 fps | 97% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,246 psi | 90% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,882 psi | 86% | 2956 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,188 psi | 90% | 3064 fps | 99.9% |
| Hodgdon H322 | <<locked>> | 82% | 56,130 psi | 88% | 2917 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,348 psi | 90% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,521 psi | 87% | 2972 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 98% | 54,998 psi | 86% | 3018 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 96% | 55,985 psi | 88% | 2986 fps | 96.5% |
| Hodgdon H4895 | <<locked>> | 88% | 57,174 psi | 90% | 2989 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,734 psi | 78% | 2900 fps | 99.8% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,565 psi | 89% | 3022 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,289 psi | 88% | 3064 fps | 97.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,157 psi | 55% | 1801 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,998 psi | 86% | 2940 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,913 psi | 89% | 2966 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,101 psi | 89% | 2959 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,159 psi | 90% | 2936 fps | 97.9% |
| IMR 4198 | <<locked>> | 82% | 56,797 psi | 89% | 2831 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,940 psi | 86% | 2949 fps | 97.1% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,884 psi | 89% | 2963 fps | 97.8% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,707 psi | 83% | 2963 fps | 99.4% |
| IMR 4895 | <<locked>> | 90% | 55,854 psi | 88% | 2995 fps | 100% |
| IMR 8208 XBR | <<locked>> | 86% | 55,608 psi | 87% | 2930 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,405 psi | 87% | 2907 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,231 psi | 88% | 2949 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,072 psi | 88% | 2904 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 56,608 psi | 89% | 2953 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,782 psi | 87% | 2949 fps | 98.8% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2986 fps | 98.1% |
| Norma 201 | <<locked>> | 88% | 54,969 psi | 86% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,608 psi | 87% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,174 psi | 90% | 3005 fps | 100% |
| Norma 204ᴾ | <<locked>> | 100% | 55,869 psi | 88% | 3005 fps | 95.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,824 psi | 86% | 3012 fps | 99.5% |
| Ramshot Big Game | <<locked>> | 90% | 54,317 psi | 85% | 2979 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,693 psi | 84% | 3005 fps | 98.3% |
| Ramshot TAC | <<locked>> | 86% | 55,941 psi | 88% | 2946 fps | 98.9% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,593 psi | 87% | 2966 fps | 99.9% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,449 psi | 88% | 2927 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,737 psi | 56% | 1847 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,911 psi | 86% | 2907 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,941 psi | 88% | 2953 fps | 98.3% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,998 psi | 86% | 3035 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,650 psi | 86% | 3071 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,579 psi | 87% | 3048 fps | 99.5% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,477 psi | 87% | 3077 fps | 99.3% |
| Rottweil R 901 | <<locked>> | 86% | 55,782 psi | 87% | 2900 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,622 psi | 87% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,331 psi | 85% | 2949 fps | 100% |
| Rottweil R 907 | <<locked>> | 96% | 54,824 psi | 86% | 2927 fps | 97% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,782 psi | 87% | 2949 fps | 98.8% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,231 psi | 88% | 2949 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,608 psi | 89% | 2953 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 2986 fps | 98.1% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,304 psi | 88% | 3015 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,157 psi | 85% | 2920 fps | 99% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,926 psi | 86% | 2946 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,869 psi | 89% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,985 psi | 89% | 2854 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,362 psi | 88% | 2904 fps | 97.7% |
| Somchem S321 | <<locked>> | 84% | 56,884 psi | 89% | 2959 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,941 psi | 88% | 2854 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 53,896 psi | 84% | 2913 fps | 99.8% |
| Somchem S355 | <<locked>> | 94% | 54,607 psi | 86% | 2946 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,994 psi | 77% | 2956 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,391 psi | 88% | 2818 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,116 psi | 90% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,303 psi | 87% | 2881 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,260 psi | 88% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,188 psi | 88% | 2927 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 57,609 psi | 90% | 3009 fps | 99.6% |
| Vihtavuori N530 | <<locked>> | 86% | 56,173 psi | 88% | 2930 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,433 psi | 85% | 2894 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,492 psi | 89% | 3015 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,307 psi | 65% | 2822 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,331 psi | 85% | 2936 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 56,173 psi | 88% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,288 psi | 87% | 3025 fps | 97.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,852 psi | 53% | 2730 fps | 97.6% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,708 psi | 86% | 2953 fps | 100% |
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% | 47,224 psi | 74% | 2726 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,011 psi | 82% | 2844 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,653 psi | 62% | 2641 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,021 psi | 74% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 48,530 psi | 76% | 2779 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 37,536 psi | 59% | 2631 fps | 99.9% |
| Accurate 4350 | <<locked>> | 88% | 36,405 psi | 57% | 2667 fps | 95.9% |
| ADI AR 2206H | <<locked>> | 80% | 43,714 psi | 69% | 2756 fps | 98.8% |
| ADI AR 2208 | <<locked>> | 80% | 37,173 psi | 58% | 2602 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,876 psi | 72% | 2769 fps | 99.7% |
| Alliant AR-Comp | <<locked>> | 80% | 46,006 psi | 72% | 2756 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 53,780 psi | 84% | 2982 fps | 100% |
| Alliant Power Pro 2000-MR | 55 gr | 80% | 39,798 psi | 62% | 2782 fps | 97.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,506 psi | 57% | 2618 fps | 98.1% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,388 psi | 84% | 2828 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,378 psi | 62% | 2687 fps | 97.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 34,345 psi | 54% | 2621 fps | 95.1% |
| Alliant Reloder-17 | 54.1 gr | 80% | 31,502 psi | 49% | 2575 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 31,357 psi | 49% | 2572 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 96% | 36,796 psi | 58% | 2769 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,931 psi | 67% | 2756 fps | 97.8% |
| Bofors RP3 | <<locked>> | 80% | 36,143 psi | 57% | 2621 fps | 98.1% |
| Bofors RP7 | <<locked>> | 92% | 48,080 psi | 75% | 2812 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,601 psi | 75% | 2759 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 44,686 psi | 70% | 2789 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,327 psi | 77% | 2936 fps | 99.3% |
| Hodgdon H322 | <<locked>> | 80% | 52,489 psi | 82% | 2867 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,476 psi | 84% | 2890 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 37,014 psi | 58% | 2621 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 92% | 45,034 psi | 71% | 2844 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 92% | 49,226 psi | 77% | 2871 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,106 psi | 69% | 2769 fps | 99.2% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,488 psi | 49% | 2520 fps | 95.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,147 psi | 63% | 2736 fps | 99% |
| Hodgdon Superformance | <<locked>> | 94% | 48,472 psi | 76% | 2927 fps | 95.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,179 psi | 41% | 1611 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,351 psi | 66% | 2720 fps | 99% |
| IMR 3031 | <<locked>> | 80% | 43,830 psi | 69% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,001 psi | 61% | 2635 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 44,295 psi | 69% | 2713 fps | 95.1% |
| IMR 4198 | <<locked>> | 80% | 53,679 psi | 84% | 2789 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 48,544 psi | 76% | 2841 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 88% | 44,367 psi | 70% | 2743 fps | 95% |
| IMR 4831 | <<locked>> | 88% | 35,215 psi | 55% | 2621 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 40,350 psi | 63% | 2717 fps | 98.3% |
| IMR 8208 XBR | <<locked>> | 80% | 45,876 psi | 72% | 2769 fps | 99.7% |
| Lovex D073.5 | <<locked>> | 80% | 51,648 psi | 81% | 2851 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,728 psi | 67% | 2736 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 43,859 psi | 69% | 2697 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 38,754 psi | 61% | 2638 fps | 98.9% |
| Lovex S065 | <<locked>> | 88% | 40,814 psi | 64% | 2680 fps | 95.7% |
| Lovex S070 | <<locked>> | 92% | 44,063 psi | 69% | 2766 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 42,699 psi | 67% | 2707 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 42,946 psi | 67% | 2717 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,769 psi | 61% | 2674 fps | 97.9% |
| Norma 204 | <<locked>> | 98% | 52,228 psi | 82% | 2943 fps | 95% |
| Norma URP | <<locked>> | 86% | 34,432 psi | 54% | 2615 fps | 95% |
| Ramshot Big Game | <<locked>> | 80% | 38,450 psi | 60% | 2687 fps | 97.6% |
| Ramshot Hunter | <<locked>> | 92% | 41,162 psi | 65% | 2772 fps | 95.3% |
| Ramshot TAC | <<locked>> | 80% | 45,701 psi | 72% | 2769 fps | 97.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,208 psi | 71% | 2792 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,617 psi | 78% | 2822 fps | 99.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,382 psi | 41% | 1647 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,445 psi | 81% | 2854 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,844 psi | 67% | 2720 fps | 95.5% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,495 psi | 65% | 2792 fps | 98% |
| ReloadSwiss RS 60 | 54.1 gr | 80% | 33,605 psi | 53% | 2648 fps | 99% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 36,274 psi | 57% | 2687 fps | 95.4% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 39,073 psi | 61% | 2756 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 46,412 psi | 73% | 2749 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,437 psi | 63% | 2654 fps | 99.1% |
| Rottweil R 903 | <<locked>> | 80% | 33,794 psi | 53% | 2559 fps | 97.1% |
| Rottweil R 907 | <<locked>> | 92% | 48,080 psi | 75% | 2812 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,814 psi | 64% | 2680 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,728 psi | 67% | 2736 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 38,754 psi | 61% | 2638 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 92% | 44,063 psi | 69% | 2766 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,070 psi | 55% | 2615 fps | 96.7% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,816 psi | 69% | 2740 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,322 psi | 66% | 2726 fps | 98.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,179 psi | 69% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,680 psi | 57% | 2526 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,296 psi | 73% | 2740 fps | 95.7% |
| Somchem S321 | <<locked>> | 80% | 49,530 psi | 78% | 2848 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 43,758 psi | 69% | 2667 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,700 psi | 68% | 2740 fps | 98.8% |
| Somchem S355 | <<locked>> | 80% | 34,882 psi | 55% | 2572 fps | 97.2% |
| Somchem S365 | <<locked>> | 82% | 26,789 psi | 42% | 2438 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 49,966 psi | 78% | 2730 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,570 psi | 70% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,045 psi | 63% | 2641 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,698 psi | 64% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,054 psi | 52% | 2507 fps | 98% |
| Vihtavuori N160 | <<locked>> | 86% | 36,042 psi | 56% | 2618 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 45,992 psi | 72% | 2766 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 39,189 psi | 61% | 2638 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 35,418 psi | 56% | 2618 fps | 95% |
| Vihtavuori N555 | <<locked>> | 94% | 33,678 psi | 53% | 2648 fps | 95.7% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 29,399 psi | 46% | 2421 fps | 95% |
| Winchester 748 | <<locked>> | 80% | 45,556 psi | 71% | 2808 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 45,034 psi | 71% | 2844 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,720 psi | 50% | 2661 fps | 96.5% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,684 psi | 65% | 2726 fps | 98.9% |
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 119 powders for .300 WSM loaded with the .308 | 159gr | Hasler ARIETE. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,801 fps to 3,100 fps. Accurate 3100 gives the best case fill at 100 %, and 119 of the 119 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 51–90 %, leaving at least 10 % headroom. The 159.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate 4350, ADI AR 2209 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 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 159gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate 3100, ADI AR 2209, Alliant Reloder-19 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.