Load Specifications
Bullet:.308 | 154gr | Hammer HHT
Bullet Manufacturer:Hammer
Bullet Weight:154 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:1:11.5
Load data in caliber .300 WSM with .308 | 154gr | Hammer HHT bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-17, ReloadSwiss RS 60 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% | 56,536 psi | 89% | 2910 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 54,882 psi | 86% | 2936 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 54,708 psi | 86% | 2927 fps | 100% |
| Accurate 2520 | <<locked>> | 86% | 57,232 psi | 90% | 3005 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 54,708 psi | 86% | 2927 fps | 96.4% |
| Accurate 4064 | <<locked>> | 92% | 54,795 psi | 86% | 2976 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 54,897 psi | 86% | 3058 fps | 99.4% |
| ADI AR 2206H | <<locked>> | 88% | 55,956 psi | 88% | 3015 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 94% | 57,043 psi | 89% | 3015 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,027 psi | 86% | 2969 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 55,521 psi | 87% | 2940 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 56,594 psi | 89% | 3077 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 55,724 psi | 87% | 3140 fps | 99.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 56,826 psi | 89% | 3038 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 56,101 psi | 88% | 2913 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 92% | 57,522 psi | 90% | 3061 fps | 99.8% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 52,924 psi | 83% | 3064 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 96% | 53,983 psi | 85% | 3104 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 37,478 psi | 59% | 2776 fps | 97.8% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 41,858 psi | 66% | 2933 fps | 96.8% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 55,796 psi | 87% | 3028 fps | 99.5% |
| Bofors RP3 | <<locked>> | 94% | 57,276 psi | 90% | 3048 fps | 100% |
| Bofors RP7 | <<locked>> | 98% | 57,609 psi | 90% | 3018 fps | 97.2% |
| Hodgdon Benchmark | <<locked>> | 86% | 56,710 psi | 89% | 2949 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 54,128 psi | 85% | 2995 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 56,362 psi | 88% | 3100 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 82% | 55,579 psi | 87% | 2963 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 56,681 psi | 89% | 2986 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 54,955 psi | 86% | 3009 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 98% | 54,520 psi | 85% | 3058 fps | 97.4% |
| Hodgdon H4350 | <<locked>> | 96% | 55,390 psi | 87% | 3022 fps | 96.1% |
| Hodgdon H4895 | <<locked>> | 88% | 56,521 psi | 89% | 3028 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 49,095 psi | 77% | 2936 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 55,941 psi | 88% | 3061 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 55,390 psi | 87% | 3094 fps | 97.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,143 psi | 55% | 1834 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,375 psi | 85% | 2979 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 56,217 psi | 88% | 3009 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,391 psi | 88% | 2995 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 90% | 56,492 psi | 89% | 2972 fps | 97.5% |
| IMR 4198 | <<locked>> | 82% | 56,260 psi | 88% | 2874 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 54,288 psi | 85% | 2986 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,130 psi | 88% | 2995 fps | 97.4% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,982 psi | 81% | 2995 fps | 99.1% |
| IMR 4895 | <<locked>> | 90% | 55,376 psi | 87% | 3038 fps | 99.9% |
| IMR 8208 XBR | <<locked>> | 86% | 55,027 psi | 86% | 2969 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 54,781 psi | 86% | 2946 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 55,390 psi | 87% | 2989 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 55,550 psi | 87% | 2943 fps | 99.9% |
| Lovex S062 | <<locked>> | 92% | 55,869 psi | 88% | 2989 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 55,245 psi | 87% | 2989 fps | 98.5% |
| Lovex S070ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3022 fps | 97.8% |
| Norma 201 | <<locked>> | 88% | 54,317 psi | 85% | 2956 fps | 100% |
| Norma 202 | <<locked>> | 88% | 54,969 psi | 86% | 2959 fps | 100% |
| Norma 203B | <<locked>> | 92% | 56,681 psi | 89% | 3048 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,114 psi | 85% | 3048 fps | 99.3% |
| Ramshot Big Game | <<locked>> | 92% | 57,566 psi | 90% | 3074 fps | 99.9% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 52,953 psi | 83% | 3038 fps | 97.9% |
| Ramshot TAC | <<locked>> | 86% | 55,201 psi | 87% | 2982 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 86% | 54,839 psi | 86% | 3002 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 55,782 psi | 87% | 2966 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,476 psi | 56% | 1877 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 54,375 psi | 85% | 2946 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 55,390 psi | 87% | 2992 fps | 98% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 54,201 psi | 85% | 3071 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 96% | 57,653 psi | 90% | 3166 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 54,665 psi | 86% | 3081 fps | 99.2% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 54,607 psi | 86% | 3110 fps | 99% |
| Rottweil R 901 | <<locked>> | 86% | 54,998 psi | 86% | 2936 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 54,940 psi | 86% | 2956 fps | 100% |
| Rottweil R 903 | <<locked>> | 96% | 57,188 psi | 90% | 3041 fps | 100% |
| Rottweil R 907 | <<locked>> | 98% | 57,609 psi | 90% | 3018 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 98% | 55,245 psi | 87% | 2989 fps | 98.5% |
| Shooters World Match Rifle | <<locked>> | 88% | 55,390 psi | 87% | 2989 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 55,869 psi | 88% | 2989 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 56,173 psi | 88% | 3022 fps | 97.8% |
| Shooters World Tactical Rifle | <<locked>> | 82% | 57,595 psi | 90% | 2969 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 55,666 psi | 87% | 3051 fps | 99.9% |
| SNPE Vectan SP 3 | <<locked>> | 82% | 57,188 psi | 90% | 2940 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 88% | 57,276 psi | 90% | 3015 fps | 99.2% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 54,244 psi | 85% | 2982 fps | 99.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 56,086 psi | 88% | 2897 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 56,304 psi | 88% | 2894 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 55,724 psi | 87% | 2940 fps | 97.4% |
| Somchem S321 | <<locked>> | 84% | 56,144 psi | 88% | 2999 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 55,376 psi | 87% | 2894 fps | 100% |
| Somchem S341 | <<locked>> | 88% | 56,927 psi | 89% | 3005 fps | 99.9% |
| Somchem S355 | <<locked>> | 96% | 57,421 psi | 90% | 3038 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 48,269 psi | 76% | 2992 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 55,956 psi | 88% | 2861 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,333 psi | 88% | 2881 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 54,607 psi | 86% | 2923 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 55,550 psi | 87% | 2936 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 55,579 psi | 87% | 2966 fps | 100% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 56,840 psi | 89% | 3045 fps | 99.5% |
| Vihtavuori N530 | <<locked>> | 86% | 55,535 psi | 87% | 2969 fps | 100% |
| Vihtavuori N540 | <<locked>> | 92% | 57,493 psi | 90% | 2986 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 55,680 psi | 87% | 3048 fps | 99.3% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 40,654 psi | 64% | 2851 fps | 97.7% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 57,725 psi | 90% | 3028 fps | 100% |
| Winchester 748 | <<locked>> | 86% | 55,376 psi | 87% | 3015 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 54,520 psi | 85% | 3058 fps | 97.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 33,344 psi | 52% | 2746 fps | 96.9% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,215 psi | 85% | 2992 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% | 46,862 psi | 73% | 2769 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 51,184 psi | 80% | 2881 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 39,030 psi | 61% | 2674 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 46,485 psi | 73% | 2838 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 51,314 psi | 80% | 2871 fps | 95.7% |
| Accurate 4064 | <<locked>> | 80% | 36,912 psi | 58% | 2664 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 35,795 psi | 56% | 2694 fps | 95.3% |
| ADI AR 2206H | <<locked>> | 80% | 43,091 psi | 68% | 2789 fps | 98.5% |
| ADI AR 2208 | <<locked>> | 80% | 36,666 psi | 57% | 2631 fps | 96.2% |
| ADI Benchmark 8208 | <<locked>> | 80% | 45,208 psi | 71% | 2802 fps | 99.6% |
| Alliant AR-Comp | <<locked>> | 80% | 45,295 psi | 71% | 2792 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 52,953 psi | 83% | 3018 fps | 99.9% |
| Alliant Power Pro 2000-MR | 55.6 gr | 80% | 39,117 psi | 61% | 2808 fps | 96.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 36,143 psi | 57% | 2651 fps | 97.7% |
| Alliant Reloder-10x | <<locked>> | 80% | 52,779 psi | 83% | 2867 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 38,798 psi | 61% | 2717 fps | 97.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,245 psi | 57% | 2713 fps | 95.5% |
| Alliant Reloder-17 | 54.8 gr | 80% | 31,111 psi | 49% | 2602 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 32,938 psi | 52% | 2654 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 98% | 38,914 psi | 61% | 2861 fps | 95.7% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 42,409 psi | 66% | 2789 fps | 97.5% |
| Bofors RP3 | <<locked>> | 80% | 35,534 psi | 56% | 2651 fps | 97.7% |
| Bofors RP7 | <<locked>> | 92% | 47,718 psi | 75% | 2851 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,021 psi | 74% | 2792 fps | 99.9% |
| Hodgdon BL-C2 | <<locked>> | 80% | 43,918 psi | 69% | 2818 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 48,660 psi | 76% | 2972 fps | 99.1% |
| Hodgdon H322 | <<locked>> | 80% | 52,025 psi | 82% | 2910 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 52,895 psi | 83% | 2933 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 39,117 psi | 61% | 2713 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 94% | 47,529 psi | 74% | 2936 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 94% | 51,692 psi | 81% | 2959 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 43,482 psi | 68% | 2802 fps | 99% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 30,937 psi | 48% | 2543 fps | 95.3% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 39,639 psi | 62% | 2769 fps | 98.7% |
| Hodgdon Superformance | <<locked>> | 94% | 47,790 psi | 75% | 2956 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,078 psi | 41% | 1640 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,959 psi | 66% | 2753 fps | 98.7% |
| IMR 3031 | <<locked>> | 80% | 43,163 psi | 68% | 2802 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,479 psi | 60% | 2667 fps | 97.1% |
| IMR 4166 Enduron | <<locked>> | 84% | 46,760 psi | 73% | 2805 fps | 95.5% |
| IMR 4198 | <<locked>> | 80% | 52,939 psi | 83% | 2828 fps | 100% |
| IMR 4350 | <<locked>> | 96% | 47,761 psi | 75% | 2871 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 90% | 46,717 psi | 73% | 2831 fps | 95.4% |
| IMR 4831 | <<locked>> | 88% | 34,679 psi | 54% | 2651 fps | 95% |
| IMR 4895 | <<locked>> | 80% | 39,769 psi | 62% | 2749 fps | 97.9% |
| IMR 8208 XBR | <<locked>> | 80% | 45,208 psi | 71% | 2802 fps | 99.6% |
| Lovex D073.5 | <<locked>> | 80% | 51,053 psi | 80% | 2890 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 42,018 psi | 66% | 2766 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 43,337 psi | 68% | 2730 fps | 98.6% |
| Lovex S062 | <<locked>> | 80% | 38,189 psi | 60% | 2671 fps | 98.6% |
| Lovex S065 | <<locked>> | 88% | 40,321 psi | 63% | 2713 fps | 95.2% |
| Lovex S070 | <<locked>> | 94% | 46,340 psi | 73% | 2854 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 42,119 psi | 66% | 2743 fps | 99.3% |
| Norma 202 | <<locked>> | 80% | 42,554 psi | 67% | 2753 fps | 100% |
| Norma 203B | <<locked>> | 80% | 38,159 psi | 60% | 2703 fps | 97.5% |
| Norma URP | <<locked>> | 88% | 36,129 psi | 57% | 2697 fps | 95.3% |
| Ramshot Big Game | <<locked>> | 80% | 37,753 psi | 59% | 2713 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 94% | 43,410 psi | 68% | 2861 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 45,208 psi | 71% | 2805 fps | 96.8% |
| Ramshot Wild Boar | <<locked>> | 80% | 44,657 psi | 70% | 2825 fps | 98.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,066 psi | 77% | 2854 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,266 psi | 41% | 1677 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 50,995 psi | 80% | 2894 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 42,540 psi | 67% | 2759 fps | 95% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 40,741 psi | 64% | 2822 fps | 97.6% |
| ReloadSwiss RS 60 | 54.8 gr | 80% | 33,214 psi | 52% | 2677 fps | 98.6% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 38,319 psi | 60% | 2776 fps | 95.9% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 41,394 psi | 65% | 2851 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 45,847 psi | 72% | 2789 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 40,118 psi | 63% | 2694 fps | 98.9% |
| Rottweil R 903 | <<locked>> | 80% | 33,417 psi | 52% | 2589 fps | 96.7% |
| Rottweil R 907 | <<locked>> | 92% | 47,718 psi | 75% | 2851 fps | 95.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 40,321 psi | 63% | 2713 fps | 95.2% |
| Shooters World Match Rifle | <<locked>> | 80% | 42,018 psi | 66% | 2766 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 38,189 psi | 60% | 2671 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 94% | 46,340 psi | 73% | 2854 fps | 95.7% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 53,708 psi | 84% | 2910 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 34,490 psi | 54% | 2641 fps | 96.1% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 53,766 psi | 84% | 2894 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 43,265 psi | 68% | 2772 fps | 96.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 41,640 psi | 65% | 2756 fps | 98.2% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 43,685 psi | 68% | 2700 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 36,201 psi | 57% | 2559 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 45,672 psi | 72% | 2769 fps | 95.3% |
| Somchem S321 | <<locked>> | 80% | 48,965 psi | 77% | 2887 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 43,221 psi | 68% | 2700 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 43,178 psi | 68% | 2776 fps | 98.5% |
| Somchem S355 | <<locked>> | 80% | 34,345 psi | 54% | 2598 fps | 96.8% |
| Somchem S365 | <<locked>> | 84% | 28,123 psi | 44% | 2520 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 49,458 psi | 78% | 2769 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,048 psi | 69% | 2697 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 39,494 psi | 62% | 2677 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 40,306 psi | 63% | 2687 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,706 psi | 51% | 2536 fps | 97.7% |
| Vihtavuori N160 | <<locked>> | 86% | 35,563 psi | 56% | 2648 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 45,368 psi | 71% | 2799 fps | 99.6% |
| Vihtavuori N540 | <<locked>> | 80% | 38,783 psi | 61% | 2671 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 37,275 psi | 58% | 2703 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 94% | 33,214 psi | 52% | 2674 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,096 psi | 49% | 2507 fps | 95.5% |
| Winchester 748 | <<locked>> | 80% | 45,005 psi | 71% | 2844 fps | 99.9% |
| Winchester 760 | <<locked>> | 92% | 44,498 psi | 70% | 2877 fps | 95% |
| Winchester StaBALL HD | <<locked>> | 98% | 31,241 psi | 49% | 2677 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 41,220 psi | 65% | 2759 fps | 98.7% |
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 104 powders for .300 WSM loaded with the .308 | 154gr | Hammer HHT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,166 fps. Accurate 4350 gives the best case fill at 100 %, and 104 of the 104 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 52–90 %, leaving at least 10 % headroom. The 154.0 gr projectile in 0.308" calls for a 1:11.5 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 Reloder-17, ReloadSwiss RS 60, Alliant Power Pro 2000-MR rank at the top here: for .300 WSM with the .308 | 154gr | Hammer HHT 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.