Load Specifications
Bullet Manufacturer:Frontier Bullets
Bullet Weight:165 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 | 165gr | Frontier PH HPBT bullet and 99 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 ReloadSwiss RS 70.
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>> | 84% | 57,188 psi | 90% | 2815 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,362 psi | 88% | 2844 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,289 psi | 88% | 2900 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,376 psi | 88% | 2854 fps | 97.5% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,381 psi | 68% | 2743 fps | 96.7% |
| Accurate 4064 | <<locked>> | 90% | 56,434 psi | 88% | 2897 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,492 psi | 89% | 2986 fps | 99.8% |
| ADI AR 2206H | <<locked>> | 86% | 56,347 psi | 88% | 2927 fps | 100% |
| ADI AR 2208 | <<locked>> | 92% | 57,450 psi | 90% | 2927 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,288 psi | 87% | 2874 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 56,391 psi | 88% | 2844 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 56,318 psi | 88% | 3051 fps | 100% |
| Alliant Reloder- TS 15.5 | <<locked>> | 92% | 57,725 psi | 90% | 2949 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 54,578 psi | 86% | 2917 fps | 99.9% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 57,363 psi | 90% | 3041 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,100 psi | 86% | 3025 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,249 psi | 65% | 2776 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,311 psi | 73% | 2943 fps | 98.8% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,304 psi | 88% | 2943 fps | 99.8% |
| Bofors RP3 | <<locked>> | 90% | 54,824 psi | 86% | 2913 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 54,723 psi | 86% | 2884 fps | 97.5% |
| Hodgdon Benchmark | <<locked>> | 84% | 56,956 psi | 89% | 2854 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 54,810 psi | 86% | 2904 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 82% | 57,043 psi | 89% | 3009 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,172 psi | 86% | 2851 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 55,622 psi | 87% | 2927 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 94% | 57,029 psi | 89% | 3005 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 98% | 57,464 psi | 90% | 2966 fps | 97.4% |
| Hodgdon H4895 | <<locked>> | 86% | 56,913 psi | 89% | 2936 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 53,751 psi | 84% | 2913 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,652 psi | 89% | 2969 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,043 psi | 88% | 3018 fps | 98% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,752 psi | 56% | 1781 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,000 psi | 89% | 2920 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 55,680 psi | 87% | 2894 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,086 psi | 88% | 2897 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,434 psi | 87% | 2871 fps | 98.1% |
| IMR 4350 | <<locked>> | 98% | 55,303 psi | 87% | 2913 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 94% | 56,521 psi | 89% | 2913 fps | 98.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 50,488 psi | 79% | 2877 fps | 99.4% |
| IMR 4895 | <<locked>> | 88% | 55,999 psi | 88% | 2949 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,288 psi | 87% | 2874 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,565 psi | 89% | 2904 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 55,767 psi | 87% | 2851 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,014 psi | 89% | 2907 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,072 psi | 88% | 2910 fps | 99.1% |
| Lovex S070 | <<locked>> | 98% | 57,159 psi | 90% | 2946 fps | 98.5% |
| Norma 201 | <<locked>> | 86% | 55,143 psi | 86% | 2867 fps | 100% |
| Norma 202 | <<locked>> | 86% | 55,695 psi | 87% | 2871 fps | 100% |
| Norma 203B | <<locked>> | 90% | 57,551 psi | 90% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 98% | 55,854 psi | 88% | 2963 fps | 96.5% |
| Norma MRPᴾ | <<locked>> | 100% | 46,238 psi | 72% | 2900 fps | 96.2% |
| Norma URP | <<locked>> | 98% | 55,259 psi | 87% | 2969 fps | 99.7% |
| Ramshot Big Game | <<locked>> | 88% | 54,476 psi | 85% | 2933 fps | 100% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 57,667 psi | 90% | 3022 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 55,506 psi | 87% | 2894 fps | 99.2% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,303 psi | 87% | 2913 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,014 psi | 88% | 2874 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,201 psi | 57% | 1824 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 55,825 psi | 87% | 2907 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 55,317 psi | 87% | 2989 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 54,723 psi | 86% | 3018 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,217 psi | 88% | 3009 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 55,535 psi | 87% | 3035 fps | 99.6% |
| Rottweil R 901 | <<locked>> | 84% | 56,159 psi | 88% | 2851 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 55,724 psi | 87% | 2867 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 54,694 psi | 86% | 2904 fps | 100% |
| Rottweil R 907 | <<locked>> | 94% | 54,723 psi | 86% | 2884 fps | 97.5% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,072 psi | 88% | 2910 fps | 99.1% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,565 psi | 89% | 2904 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,014 psi | 89% | 2907 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,159 psi | 90% | 2946 fps | 98.5% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 56,405 psi | 88% | 2966 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,041 psi | 85% | 2871 fps | 99.3% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 54,926 psi | 86% | 2897 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,594 psi | 89% | 2805 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 56,898 psi | 89% | 2802 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 56,347 psi | 88% | 2861 fps | 98.2% |
| Somchem S321 | <<locked>> | 82% | 56,637 psi | 89% | 2907 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 55,883 psi | 88% | 2802 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 57,406 psi | 90% | 2917 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,114 psi | 86% | 2904 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 53,519 psi | 84% | 2972 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 49,487 psi | 78% | 2851 fps | 96.5% |
| Unknown powder | <<locked>> | 96% | 56,333 psi | 88% | 2979 fps | 99.5% |
| Vihtavuori N130 | <<locked>> | 82% | 55,056 psi | 86% | 2753 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,289 psi | 88% | 2785 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 55,535 psi | 87% | 2831 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,419 psi | 87% | 2838 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,376 psi | 88% | 2884 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 56,985 psi | 89% | 2949 fps | 99.8% |
| Vihtavuori N530 | <<locked>> | 82% | 54,955 psi | 86% | 2877 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,230 psi | 87% | 2867 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 57,290 psi | 90% | 2999 fps | 99.8% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 45,484 psi | 71% | 2851 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,375 psi | 85% | 2890 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 56,550 psi | 89% | 2930 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 57,029 psi | 89% | 3005 fps | 98.5% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 36,898 psi | 58% | 2782 fps | 99.3% |
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% | 50,589 psi | 79% | 2723 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,555 psi | 68% | 2654 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,240 psi | 77% | 2795 fps | 100% |
| Accurate 2700 | <<locked>> | 86% | 46,325 psi | 73% | 2687 fps | 95.4% |
| Accurate 3100 | <<locked>> | 96% | 37,797 psi | 59% | 2631 fps | 95% |
| Accurate 4064 | <<locked>> | 80% | 41,176 psi | 65% | 2651 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,430 psi | 51% | 2523 fps | 95% |
| ADI AR 2206H | <<locked>> | 80% | 46,731 psi | 73% | 2766 fps | 99.5% |
| ADI AR 2208 | <<locked>> | 80% | 39,784 psi | 62% | 2615 fps | 97.9% |
| ADI Benchmark 8208 | <<locked>> | 80% | 48,791 psi | 76% | 2772 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,516 psi | 78% | 2753 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 42,612 psi | 67% | 2802 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,639 psi | 62% | 2638 fps | 99.1% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,380 psi | 66% | 2703 fps | 98.6% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,692 psi | 51% | 2536 fps | 95% |
| Alliant Reloder-17 | 55 gr | 80% | 34,243 psi | 54% | 2608 fps | 97.6% |
| Alliant Reloder-23 | <<locked>> | 90% | 30,284 psi | 47% | 2500 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 92% | 34,954 psi | 55% | 2680 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,064 psi | 72% | 2772 fps | 98.8% |
| Bofors RP3 | <<locked>> | 80% | 39,363 psi | 62% | 2641 fps | 99.1% |
| Bofors RP7 | <<locked>> | 88% | 45,513 psi | 71% | 2723 fps | 95.5% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,386 psi | 79% | 2756 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 47,892 psi | 75% | 2795 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 80% | 53,011 psi | 83% | 2946 fps | 99.8% |
| Hodgdon H322 | <<locked>> | 80% | 51,967 psi | 81% | 2805 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 39,958 psi | 63% | 2644 fps | 96.9% |
| Hodgdon H414 | <<locked>> | 86% | 43,482 psi | 68% | 2769 fps | 95.7% |
| Hodgdon H4350 | <<locked>> | 92% | 47,877 psi | 75% | 2805 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 47,166 psi | 74% | 2779 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,166 psi | 44% | 2382 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,712 psi | 64% | 2697 fps | 99.4% |
| Hodgdon Superformance | <<locked>> | 90% | 45,310 psi | 71% | 2828 fps | 95.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,672 psi | 42% | 1594 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 41,916 psi | 66% | 2664 fps | 99.2% |
| IMR 3031 | <<locked>> | 80% | 43,207 psi | 68% | 2703 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 38,972 psi | 61% | 2592 fps | 97.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 43,714 psi | 69% | 2661 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 45,614 psi | 71% | 2746 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 86% | 44,440 psi | 70% | 2703 fps | 95.7% |
| IMR 4831 | <<locked>> | 86% | 32,561 psi | 51% | 2510 fps | 95.1% |
| IMR 4895 | <<locked>> | 80% | 43,424 psi | 68% | 2733 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 80% | 48,791 psi | 76% | 2772 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,195 psi | 72% | 2746 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,543 psi | 73% | 2700 fps | 99.5% |
| Lovex S062 | <<locked>> | 80% | 41,771 psi | 65% | 2651 fps | 99.6% |
| Lovex S065 | <<locked>> | 84% | 38,798 psi | 61% | 2592 fps | 95.7% |
| Lovex S070 | <<locked>> | 88% | 41,829 psi | 66% | 2677 fps | 95.4% |
| Norma 201 | <<locked>> | 80% | 45,847 psi | 72% | 2717 fps | 99.9% |
| Norma 202 | <<locked>> | 80% | 46,282 psi | 73% | 2723 fps | 100% |
| Norma 203B | <<locked>> | 80% | 41,742 psi | 65% | 2690 fps | 98.9% |
| Norma 204 | <<locked>> | 96% | 52,069 psi | 82% | 2900 fps | 95.7% |
| Norma MRP | <<locked>> | 98% | 43,134 psi | 68% | 2835 fps | 95.3% |
| Norma URP | <<locked>> | 84% | 34,969 psi | 55% | 2582 fps | 95.8% |
| Ramshot Big Game | <<locked>> | 80% | 41,394 psi | 65% | 2703 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 88% | 38,870 psi | 61% | 2677 fps | 95.1% |
| Ramshot TAC | <<locked>> | 80% | 48,733 psi | 76% | 2782 fps | 98.3% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,414 psi | 76% | 2802 fps | 99.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,504 psi | 82% | 2822 fps | 99.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,977 psi | 42% | 1631 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,379 psi | 63% | 2628 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 44,904 psi | 70% | 2808 fps | 99% |
| ReloadSwiss RS 60 | 55 gr | 80% | 36,448 psi | 57% | 2677 fps | 99.8% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,577 psi | 54% | 2598 fps | 95.4% |
| ReloadSwiss RS 70 | 60 gr | 86% | 36,840 psi | 58% | 2661 fps | 95.4% |
| Rottweil R 901 | <<locked>> | 80% | 49,864 psi | 78% | 2756 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,511 psi | 68% | 2667 fps | 99.7% |
| Rottweil R 903 | <<locked>> | 80% | 36,941 psi | 58% | 2585 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 88% | 45,513 psi | 71% | 2723 fps | 95.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 38,798 psi | 61% | 2592 fps | 95.7% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,195 psi | 72% | 2746 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,771 psi | 65% | 2651 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 88% | 41,829 psi | 66% | 2677 fps | 95.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 37,898 psi | 59% | 2635 fps | 98% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,108 psi | 74% | 2756 fps | 98.4% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,194 psi | 71% | 2733 fps | 99.3% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,094 psi | 74% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,334 psi | 62% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 43,569 psi | 68% | 2648 fps | 95.6% |
| Somchem S321 | <<locked>> | 80% | 52,968 psi | 83% | 2854 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,717 psi | 73% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 46,905 psi | 74% | 2753 fps | 99.5% |
| Somchem S355 | <<locked>> | 80% | 37,811 psi | 59% | 2592 fps | 98.5% |
| Somchem S365 | <<locked>> | 80% | 27,485 psi | 43% | 2418 fps | 96.3% |
| Somchem S385 | <<locked>> | 98% | 46,383 psi | 73% | 2795 fps | 95.7% |
| Unknown powder | <<locked>> | 82% | 35,549 psi | 56% | 2585 fps | 95.2% |
| Vihtavuori N130 | <<locked>> | 80% | 51,953 psi | 81% | 2710 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,454 psi | 70% | 2612 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,294 psi | 68% | 2648 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,192 psi | 68% | 2648 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,184 psi | 50% | 2441 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 80% | 33,315 psi | 52% | 2503 fps | 95% |
| Vihtavuori N530 | <<locked>> | 80% | 51,488 psi | 81% | 2825 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,815 psi | 67% | 2667 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,721 psi | 53% | 2546 fps | 95.1% |
| Vihtavuori N555 | <<locked>> | 90% | 32,692 psi | 51% | 2575 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,792 psi | 50% | 2451 fps | 96.9% |
| Winchester 748 | <<locked>> | 80% | 52,750 psi | 83% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 43,482 psi | 68% | 2769 fps | 95.7% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,485 psi | 45% | 2513 fps | 95.1% |
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 99 powders for .300 WSM loaded with the .308 | 165gr | Frontier PH HPBT. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,051 fps; across all powders the maximum-charge window runs from 1,781 fps to 3,051 fps. Accurate 3100 gives the best case fill at 100 %, and 99 of the 99 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 165.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, 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. ReloadSwiss RS 60, Alliant Reloder-17, ReloadSwiss RS 70 rank at the top here: for .300 WSM with the .308 | 165gr | Frontier PH HPBT 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.