Load Specifications
Bullet Manufacturer:Reichenberg
Bullet Weight:170 gr
Bullet Diameter:0.309"
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:1:12.5
Load data in caliber .300 WSM with .309 | 170gr | Reichenberg HDB Universal bullet and 104 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, ReloadSwiss RS 70 and Hodgdon Superformance.
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% | 57,609 psi | 90% | 2789 fps | 100% |
| Accurate 2495 | <<locked>> | 88% | 56,434 psi | 88% | 2815 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 56,782 psi | 89% | 2871 fps | 100% |
| Accurate 2700 | <<locked>> | 92% | 56,782 psi | 89% | 2835 fps | 97.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 43,772 psi | 69% | 2723 fps | 97.2% |
| Accurate 4064 | <<locked>> | 90% | 56,608 psi | 89% | 2864 fps | 100% |
| Accurate 4350 | <<locked>> | 98% | 56,985 psi | 89% | 2959 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 86% | 56,898 psi | 89% | 2900 fps | 100% |
| ADI AR 2208 | <<locked>> | 90% | 54,549 psi | 85% | 2851 fps | 99.9% |
| ADI AR 2209ᴾ | <<locked>> | 100% | 51,663 psi | 81% | 2884 fps | 96.1% |
| ADI Benchmark 8208 | <<locked>> | 84% | 55,811 psi | 87% | 2848 fps | 100% |
| Alliant AR-Comp | <<locked>> | 84% | 57,130 psi | 90% | 2818 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 88% | 57,072 psi | 89% | 3028 fps | 100% |
| Alliant Power Pro Varmintᴾ | <<locked>> | 100% | 51,517 psi | 81% | 2884 fps | 96.3% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 54,752 psi | 86% | 2874 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 55,085 psi | 86% | 2894 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 98% | 54,708 psi | 86% | 2969 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 94% | 55,811 psi | 87% | 2999 fps | 100% |
| Alliant Reloder-19ᴾ | <<locked>> | 100% | 50,705 psi | 79% | 2874 fps | 96.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 41,539 psi | 65% | 2753 fps | 99.6% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 46,920 psi | 74% | 2930 fps | 99.2% |
| Baschieri & Pellagri 107 | <<locked>> | 86% | 56,913 psi | 89% | 2920 fps | 99.9% |
| Bofors RP3 | <<locked>> | 90% | 55,274 psi | 87% | 2887 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 55,405 psi | 87% | 2864 fps | 98% |
| Hodgdon Benchmark | <<locked>> | 84% | 57,493 psi | 90% | 2831 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 55,347 psi | 87% | 2877 fps | 100% |
| Hodgdon H322 | <<locked>> | 82% | 55,840 psi | 88% | 2828 fps | 100% |
| Hodgdon H380 | <<locked>> | 90% | 56,347 psi | 88% | 2907 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 92% | 54,114 psi | 85% | 2927 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 96% | 54,578 psi | 86% | 2890 fps | 97.2% |
| Hodgdon H4895 | <<locked>> | 86% | 57,493 psi | 90% | 2910 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 54,462 psi | 85% | 2890 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 57,624 psi | 90% | 2949 fps | 100% |
| Hodgdon Superformance | <<locked>> | 96% | 56,927 psi | 89% | 3002 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,708 psi | 56% | 1762 fps | 100% |
| Hodgdon VARGET | <<locked>> | 90% | 57,609 psi | 90% | 2897 fps | 100% |
| IMR 3031 | <<locked>> | 88% | 56,101 psi | 88% | 2864 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 56,652 psi | 89% | 2874 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 92% | 55,956 psi | 88% | 2848 fps | 98.5% |
| IMR 4350 | <<locked>> | 98% | 55,869 psi | 88% | 2894 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 94% | 57,363 psi | 90% | 2897 fps | 98.6% |
| IMR 4831ᴾ | <<locked>> | 100% | 51,198 psi | 80% | 2858 fps | 99.6% |
| IMR 4895 | <<locked>> | 88% | 56,521 psi | 89% | 2923 fps | 100% |
| IMR 8208 XBR | <<locked>> | 84% | 55,811 psi | 87% | 2848 fps | 100% |
| Lovex D073.6 | <<locked>> | 86% | 56,782 psi | 89% | 2871 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 56,318 psi | 88% | 2828 fps | 100% |
| Lovex S062 | <<locked>> | 90% | 57,188 psi | 90% | 2877 fps | 100% |
| Lovex S065 | <<locked>> | 96% | 56,492 psi | 89% | 2884 fps | 99.4% |
| Lovex S070 | <<locked>> | 98% | 57,609 psi | 90% | 2923 fps | 98.9% |
| Norma 201 | <<locked>> | 86% | 55,463 psi | 87% | 2841 fps | 100% |
| Norma 202 | <<locked>> | 86% | 56,231 psi | 88% | 2844 fps | 100% |
| Norma 203B | <<locked>> | 88% | 54,302 psi | 85% | 2881 fps | 100% |
| Norma 204 | <<locked>> | 98% | 56,811 psi | 89% | 2946 fps | 97.1% |
| Norma MRPᴾ | <<locked>> | 100% | 46,586 psi | 73% | 2881 fps | 96.8% |
| Norma URP | <<locked>> | 98% | 55,912 psi | 88% | 2946 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 88% | 55,085 psi | 86% | 2907 fps | 100% |
| Ramshot Hunter | <<locked>> | 98% | 54,984 psi | 86% | 2949 fps | 99.1% |
| Ramshot TAC | <<locked>> | 84% | 55,985 psi | 88% | 2871 fps | 99.4% |
| Ramshot Wild Boar | <<locked>> | 84% | 55,912 psi | 88% | 2887 fps | 100% |
| Ramshot X-Terminator | <<locked>> | 82% | 56,492 psi | 89% | 2851 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,129 psi | 57% | 1801 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 90% | 56,623 psi | 89% | 2890 fps | 99% |
| ReloadSwiss RS 52 | <<locked>> | 86% | 56,043 psi | 88% | 2966 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 92% | 55,767 psi | 87% | 2999 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 98% | 56,884 psi | 89% | 2986 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 98% | 56,420 psi | 88% | 3022 fps | 99.8% |
| Rottweil R 901 | <<locked>> | 84% | 56,101 psi | 88% | 2818 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 56,101 psi | 88% | 2844 fps | 100% |
| Rottweil R 903 | <<locked>> | 92% | 55,143 psi | 86% | 2881 fps | 100% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 49,487 psi | 78% | 2854 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 94% | 55,405 psi | 87% | 2864 fps | 98% |
| Shooters World Long Rifle | <<locked>> | 96% | 56,492 psi | 89% | 2884 fps | 99.4% |
| Shooters World Match Rifle | <<locked>> | 86% | 56,782 psi | 89% | 2871 fps | 100% |
| Shooters World Precision | <<locked>> | 90% | 57,188 psi | 90% | 2877 fps | 100% |
| Shooters World SW4350 | <<locked>> | 98% | 57,609 psi | 90% | 2923 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 92% | 57,290 psi | 90% | 2946 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 54,433 psi | 85% | 2848 fps | 99.5% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 55,463 psi | 87% | 2874 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 56,855 psi | 89% | 2779 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 92% | 57,508 psi | 90% | 2779 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 96% | 57,043 psi | 89% | 2844 fps | 98.6% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 49,008 psi | 77% | 2848 fps | 95.9% |
| Somchem S321 | <<locked>> | 82% | 57,116 psi | 90% | 2881 fps | 100% |
| Somchem S335 | <<locked>> | 86% | 56,333 psi | 88% | 2776 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 54,201 psi | 85% | 2838 fps | 100% |
| Somchem S355 | <<locked>> | 92% | 55,550 psi | 87% | 2881 fps | 100% |
| Somchem S365ᴾ | <<locked>> | 100% | 54,244 psi | 85% | 2949 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 50,140 psi | 79% | 2835 fps | 97% |
| Unknown powder | <<locked>> | 96% | 57,000 psi | 89% | 2956 fps | 99.7% |
| Vihtavuori N130 | <<locked>> | 82% | 55,332 psi | 87% | 2723 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 56,652 psi | 89% | 2756 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 56,072 psi | 88% | 2802 fps | 100% |
| Vihtavuori N140 | <<locked>> | 88% | 55,970 psi | 88% | 2812 fps | 100% |
| Vihtavuori N150 | <<locked>> | 98% | 56,942 psi | 89% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 96% | 57,595 psi | 90% | 2927 fps | 99.9% |
| Vihtavuori N530 | <<locked>> | 82% | 55,492 psi | 87% | 2854 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 55,724 psi | 87% | 2841 fps | 100% |
| Vihtavuori N550 | <<locked>> | 94% | 54,317 psi | 85% | 2923 fps | 99.7% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 46,093 psi | 72% | 2831 fps | 99.5% |
| Winchester 6.5 StaBALL | <<locked>> | 96% | 54,882 psi | 86% | 2867 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,217 psi | 90% | 2907 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 54,114 psi | 85% | 2927 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 37,144 psi | 58% | 2769 fps | 99.7% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 52,620 psi | 82% | 2858 fps | 96.4% |
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% | 50,908 psi | 80% | 2697 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 43,163 psi | 68% | 2621 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 49,327 psi | 77% | 2766 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 43,569 psi | 68% | 2612 fps | 95.1% |
| Accurate 3100 | <<locked>> | 96% | 37,884 psi | 59% | 2608 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 40,857 psi | 64% | 2618 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 32,430 psi | 51% | 2500 fps | 95.4% |
| ADI AR 2206H | <<locked>> | 80% | 47,094 psi | 74% | 2743 fps | 99.7% |
| ADI AR 2208 | <<locked>> | 80% | 39,900 psi | 63% | 2589 fps | 98.3% |
| ADI AR 2209 | <<locked>> | 98% | 48,428 psi | 76% | 2828 fps | 95.3% |
| ADI Benchmark 8208 | <<locked>> | 80% | 49,255 psi | 77% | 2749 fps | 100% |
| Alliant AR-Comp | <<locked>> | 80% | 49,893 psi | 78% | 2723 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 43,076 psi | 68% | 2782 fps | 98.9% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 48,037 psi | 75% | 2822 fps | 95.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 39,682 psi | 62% | 2612 fps | 99.3% |
| Alliant Reloder-15 | <<locked>> | 80% | 42,685 psi | 67% | 2680 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 32,822 psi | 51% | 2520 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 34,243 psi | 54% | 2585 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 98% | 47,369 psi | 74% | 2812 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 88% | 28,369 psi | 44% | 2421 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 92% | 35,012 psi | 55% | 2661 fps | 95.8% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 46,514 psi | 73% | 2749 fps | 99.1% |
| Bofors RP3 | <<locked>> | 80% | 39,291 psi | 62% | 2615 fps | 99.3% |
| Bofors RP7 | <<locked>> | 86% | 42,946 psi | 67% | 2644 fps | 95.2% |
| Hodgdon Benchmark | <<locked>> | 80% | 50,618 psi | 79% | 2730 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 48,269 psi | 76% | 2769 fps | 100% |
| Hodgdon H322 | <<locked>> | 80% | 52,315 psi | 82% | 2779 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 40,147 psi | 63% | 2621 fps | 97.4% |
| Hodgdon H414 | <<locked>> | 84% | 40,915 psi | 64% | 2687 fps | 95.4% |
| Hodgdon H4350 | <<locked>> | 90% | 45,382 psi | 71% | 2730 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 47,543 psi | 75% | 2753 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 28,036 psi | 44% | 2356 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 41,089 psi | 64% | 2677 fps | 99.6% |
| Hodgdon Superformance | 64.5 gr | 88% | 42,583 psi | 67% | 2746 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,469 psi | 41% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,090 psi | 66% | 2638 fps | 99.4% |
| IMR 3031 | <<locked>> | 80% | 43,453 psi | 68% | 2674 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,059 psi | 61% | 2566 fps | 98.3% |
| IMR 4166 Enduron | <<locked>> | 82% | 41,336 psi | 65% | 2589 fps | 95.4% |
| IMR 4350 | <<locked>> | 90% | 43,236 psi | 68% | 2674 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 41,872 psi | 66% | 2625 fps | 95.4% |
| IMR 4831 | <<locked>> | 86% | 32,503 psi | 51% | 2484 fps | 95.6% |
| IMR 4895 | <<locked>> | 80% | 43,743 psi | 69% | 2710 fps | 99.4% |
| IMR 8208 XBR | <<locked>> | 80% | 49,255 psi | 77% | 2749 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 46,441 psi | 73% | 2720 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 46,717 psi | 73% | 2674 fps | 99.7% |
| Lovex S062 | <<locked>> | 80% | 41,785 psi | 65% | 2625 fps | 99.8% |
| Lovex S065 | <<locked>> | 82% | 36,506 psi | 57% | 2516 fps | 95.3% |
| Lovex S070 | <<locked>> | 86% | 39,392 psi | 62% | 2598 fps | 95.1% |
| Norma 201 | <<locked>> | 80% | 45,818 psi | 72% | 2690 fps | 100% |
| Norma 202 | <<locked>> | 80% | 46,398 psi | 73% | 2697 fps | 100% |
| Norma 203B | <<locked>> | 80% | 42,047 psi | 66% | 2667 fps | 99.2% |
| Norma 204 | <<locked>> | 94% | 49,298 psi | 77% | 2825 fps | 95.5% |
| Norma MRP | <<locked>> | 98% | 43,642 psi | 68% | 2822 fps | 96% |
| Norma URP | <<locked>> | 82% | 32,880 psi | 52% | 2503 fps | 95.4% |
| Ramshot Big Game | <<locked>> | 80% | 41,800 psi | 66% | 2684 fps | 99% |
| Ramshot Hunter | <<locked>> | 88% | 39,102 psi | 61% | 2657 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 49,110 psi | 77% | 2759 fps | 98.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 48,878 psi | 77% | 2779 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 80% | 52,939 psi | 83% | 2799 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,919 psi | 42% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 40,596 psi | 64% | 2605 fps | 95.9% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 45,382 psi | 71% | 2789 fps | 99.3% |
| ReloadSwiss RS 60 | 55.4 gr | 80% | 36,477 psi | 57% | 2651 fps | 99.9% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 34,737 psi | 54% | 2579 fps | 96% |
| ReloadSwiss RS 70 | 60.5 gr | 86% | 36,985 psi | 58% | 2644 fps | 96% |
| Rottweil R 901 | <<locked>> | 80% | 49,719 psi | 78% | 2723 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 43,700 psi | 68% | 2644 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 80% | 37,028 psi | 58% | 2559 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 98% | 46,267 psi | 73% | 2795 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 86% | 42,946 psi | 67% | 2644 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 82% | 36,506 psi | 57% | 2516 fps | 95.3% |
| Shooters World Match Rifle | <<locked>> | 80% | 46,441 psi | 73% | 2720 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 41,785 psi | 65% | 2625 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 39,392 psi | 62% | 2598 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 38,218 psi | 60% | 2612 fps | 98.4% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 47,427 psi | 74% | 2733 fps | 98.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 45,585 psi | 71% | 2713 fps | 99.6% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 47,239 psi | 74% | 2638 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 39,421 psi | 62% | 2503 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 40,814 psi | 64% | 2569 fps | 95.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 45,832 psi | 72% | 2792 fps | 95.1% |
| Somchem S321 | <<locked>> | 80% | 53,403 psi | 84% | 2828 fps | 100% |
| Somchem S335 | <<locked>> | 80% | 46,775 psi | 73% | 2638 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 47,355 psi | 74% | 2730 fps | 99.7% |
| Somchem S355 | <<locked>> | 80% | 37,753 psi | 59% | 2566 fps | 98.7% |
| Somchem S365 | <<locked>> | 80% | 27,456 psi | 43% | 2395 fps | 96.8% |
| Somchem S385 | <<locked>> | 96% | 43,758 psi | 69% | 2720 fps | 95.5% |
| Unknown powder | <<locked>> | 82% | 35,810 psi | 56% | 2566 fps | 95.8% |
| Vihtavuori N130 | <<locked>> | 80% | 52,170 psi | 82% | 2680 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,643 psi | 70% | 2582 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 43,439 psi | 68% | 2618 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 43,323 psi | 68% | 2621 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 32,256 psi | 51% | 2418 fps | 98.5% |
| Vihtavuori N160 | <<locked>> | 80% | 33,315 psi | 52% | 2480 fps | 95.5% |
| Vihtavuori N530 | <<locked>> | 80% | 51,764 psi | 81% | 2799 fps | 100% |
| Vihtavuori N540 | <<locked>> | 80% | 42,917 psi | 67% | 2641 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 33,852 psi | 53% | 2523 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 88% | 30,603 psi | 48% | 2493 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 31,836 psi | 50% | 2431 fps | 97.3% |
| Winchester 748 | <<locked>> | 80% | 53,388 psi | 84% | 2851 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 40,915 psi | 64% | 2687 fps | 95.4% |
| Winchester StaBALL HD | <<locked>> | 92% | 28,471 psi | 45% | 2500 fps | 96% |
| Winchester Supreme 780 | <<locked>> | 98% | 48,834 psi | 77% | 2799 fps | 95.5% |
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 .309 | 170gr | Reichenberg HDB Universal. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,028 fps; across all powders the maximum-charge window runs from 1,762 fps to 3,028 fps. Accurate 3100 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 56–90 %, leaving at least 10 % headroom. The 170.0 gr projectile in 0.309" calls for a 1:12.5 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 60, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .300 WSM with the .309 | 170gr | Reichenberg HDB Universal 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.