Load Specifications
Bullet:.321 | 170gr | Speer Hot-Cor
Bullet Manufacturer:Speer
Bullet Weight:170 gr
Bullet Diameter:0.321"
Bullet Length:<<locked>>
Caliber:.325 WSM load data
Case Length (l3):2.09"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:81.8 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:23"
Max. allowed Pressure:63,817 psi
Load data in caliber .325 WSM with .321 | 170gr | Speer Hot-Cor 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 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.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 86% | 57,711 psi | 90% | 2874 fps | 100% |
| Accurate 2460 | <<locked>> | 82% | 56,130 psi | 88% | 2900 fps | 100% |
| Accurate 2495 | <<locked>> | 90% | 56,362 psi | 88% | 2897 fps | 100% |
| Accurate 2520 | <<locked>> | 84% | 54,607 psi | 86% | 2913 fps | 100% |
| Accurate 2700 | <<locked>> | 90% | 55,550 psi | 87% | 2887 fps | 96.1% |
| Accurate 4064 | <<locked>> | 92% | 56,289 psi | 88% | 2943 fps | 100% |
| Accurate 4350ᴾ | <<locked>> | 100% | 56,188 psi | 88% | 3022 fps | 99.3% |
| ADI AR 2206H | <<locked>> | 88% | 56,608 psi | 89% | 2969 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 92% | 54,389 psi | 85% | 2917 fps | 99.4% |
| ADI Benchmark 8208 | <<locked>> | 86% | 55,651 psi | 87% | 2923 fps | 100% |
| Alliant AR-Comp | <<locked>> | 86% | 56,420 psi | 88% | 2900 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 82% | 57,711 psi | 90% | 3038 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 90% | 56,434 psi | 88% | 3091 fps | 99.6% |
| Alliant Reloder- TS 15.5 | <<locked>> | 94% | 57,653 psi | 90% | 2992 fps | 100% |
| Alliant Reloder-10x | <<locked>> | 82% | 57,101 psi | 89% | 2877 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 90% | 54,911 psi | 86% | 2963 fps | 99.5% |
| Alliant Reloder-16ᴾ | <<locked>> | 100% | 53,708 psi | 84% | 3018 fps | 99.3% |
| Alliant Reloder-17 | <<locked>> | 96% | 55,100 psi | 86% | 3061 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 38,319 psi | 60% | 2733 fps | 97.5% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 42,844 psi | 67% | 2890 fps | 96.5% |
| Baschieri & Pellagri 107 | <<locked>> | 88% | 56,695 psi | 89% | 2986 fps | 99.4% |
| Bofors RP3 | <<locked>> | 92% | 54,853 psi | 86% | 2956 fps | 100% |
| Bofors RP7 | <<locked>> | 96% | 55,129 psi | 86% | 2920 fps | 96.3% |
| Hodgdon Benchmark | <<locked>> | 86% | 57,508 psi | 90% | 2910 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 86% | 55,114 psi | 86% | 2953 fps | 100% |
| Hodgdon CFE223 | <<locked>> | 84% | 57,261 psi | 90% | 3054 fps | 99.7% |
| Hodgdon H322 | <<locked>> | 82% | 56,304 psi | 88% | 2920 fps | 100% |
| Hodgdon H335 | <<locked>> | 82% | 57,638 psi | 90% | 2946 fps | 100% |
| Hodgdon H380 | <<locked>> | 92% | 55,854 psi | 88% | 2966 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 98% | 55,405 psi | 87% | 3015 fps | 97.1% |
| Hodgdon H4350 | <<locked>> | 96% | 56,144 psi | 88% | 2976 fps | 95.8% |
| Hodgdon H4895 | <<locked>> | 88% | 57,217 psi | 90% | 2982 fps | 100% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 50,053 psi | 78% | 2897 fps | 99.6% |
| Hodgdon LEVERevolution | <<locked>> | 90% | 56,768 psi | 89% | 3018 fps | 100% |
| Hodgdon Superformance | <<locked>> | 98% | 56,304 psi | 88% | 3051 fps | 96.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,346 psi | 55% | 1808 fps | 100% |
| Hodgdon VARGET | <<locked>> | 88% | 54,955 psi | 86% | 2933 fps | 99.9% |
| IMR 3031 | <<locked>> | 88% | 57,116 psi | 90% | 2969 fps | 100% |
| IMR 4064 | <<locked>> | 92% | 57,305 psi | 90% | 2956 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 90% | 57,406 psi | 90% | 2933 fps | 97.3% |
| IMR 4198 | <<locked>> | 82% | 57,029 psi | 89% | 2835 fps | 100% |
| IMR 4350ᴾ | <<locked>> | 100% | 55,216 psi | 87% | 2943 fps | 96.4% |
| IMR 4451 Enduron | <<locked>> | 96% | 56,913 psi | 89% | 2953 fps | 97.2% |
| IMR 4831ᴾ | <<locked>> | 100% | 52,881 psi | 83% | 2953 fps | 99% |
| IMR 4895 | <<locked>> | 90% | 56,318 psi | 88% | 2995 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 86% | 55,651 psi | 87% | 2923 fps | 100% |
| Lovex D073.5 | <<locked>> | 82% | 55,941 psi | 88% | 2907 fps | 100% |
| Lovex D073.6 | <<locked>> | 88% | 56,724 psi | 89% | 2953 fps | 100% |
| Lovex S060 | <<locked>> | 88% | 56,420 psi | 88% | 2904 fps | 99.8% |
| Lovex S062 | <<locked>> | 92% | 56,956 psi | 89% | 2949 fps | 100% |
| Lovex S065 | <<locked>> | 98% | 56,115 psi | 88% | 2943 fps | 98.3% |
| Lovex S070ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2979 fps | 97.6% |
| Norma 201 | <<locked>> | 88% | 55,521 psi | 87% | 2917 fps | 100% |
| Norma 202 | <<locked>> | 88% | 55,927 psi | 88% | 2920 fps | 100% |
| Norma 203B | <<locked>> | 92% | 57,609 psi | 90% | 3002 fps | 99.9% |
| Norma URPᴾ | <<locked>> | 100% | 54,984 psi | 86% | 3005 fps | 99.1% |
| Ramshot Big Game | <<locked>> | 90% | 54,505 psi | 85% | 2972 fps | 99.6% |
| Ramshot Hunterᴾ | <<locked>> | 100% | 53,896 psi | 84% | 2999 fps | 97.7% |
| Ramshot TAC | <<locked>> | 86% | 56,159 psi | 88% | 2940 fps | 98.5% |
| Ramshot Wild Boar | <<locked>> | 86% | 55,709 psi | 87% | 2959 fps | 99.8% |
| Ramshot X-Terminator | <<locked>> | 84% | 56,666 psi | 89% | 2923 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,868 psi | 56% | 1850 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 82% | 55,129 psi | 86% | 2904 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 92% | 56,202 psi | 88% | 2946 fps | 97.7% |
| ReloadSwiss RS 52 | <<locked>> | 88% | 55,259 psi | 87% | 3028 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 94% | 54,868 psi | 86% | 3064 fps | 100% |
| ReloadSwiss RS 62ᴾ | <<locked>> | 100% | 55,782 psi | 87% | 3041 fps | 99.1% |
| ReloadSwiss RS 70ᴾ | <<locked>> | 100% | 55,637 psi | 87% | 3068 fps | 98.9% |
| Rottweil R 901 | <<locked>> | 86% | 56,463 psi | 88% | 2904 fps | 100% |
| Rottweil R 902 | <<locked>> | 90% | 55,985 psi | 88% | 2917 fps | 100% |
| Rottweil R 903 | <<locked>> | 94% | 54,679 psi | 86% | 2946 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 96% | 55,129 psi | 86% | 2920 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 98% | 56,115 psi | 88% | 2943 fps | 98.3% |
| Shooters World Match Rifle | <<locked>> | 88% | 56,724 psi | 89% | 2953 fps | 100% |
| Shooters World Precision | <<locked>> | 92% | 56,956 psi | 89% | 2949 fps | 100% |
| Shooters World SW4350ᴾ | <<locked>> | 100% | 57,188 psi | 90% | 2979 fps | 97.6% |
| SNPE Vectan SP 11 | <<locked>> | 94% | 56,521 psi | 89% | 3009 fps | 99.8% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 54,592 psi | 86% | 2917 fps | 98.6% |
| SNPE Vectan SP 9 | <<locked>> | 88% | 55,245 psi | 87% | 2943 fps | 99.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 88% | 57,203 psi | 90% | 2861 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 94% | 57,305 psi | 90% | 2858 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 98% | 56,797 psi | 89% | 2900 fps | 97.2% |
| Somchem S321 | <<locked>> | 84% | 57,058 psi | 89% | 2959 fps | 100% |
| Somchem S335 | <<locked>> | 88% | 56,376 psi | 88% | 2854 fps | 100% |
| Somchem S341 | <<locked>> | 86% | 54,186 psi | 85% | 2910 fps | 99.6% |
| Somchem S355 | <<locked>> | 94% | 55,085 psi | 86% | 2946 fps | 99.9% |
| Somchem S365ᴾ | <<locked>> | 100% | 49,385 psi | 77% | 2953 fps | 100% |
| Vihtavuori N130 | <<locked>> | 84% | 56,826 psi | 89% | 2825 fps | 100% |
| Vihtavuori N133 | <<locked>> | 88% | 57,363 psi | 90% | 2844 fps | 100% |
| Vihtavuori N135 | <<locked>> | 90% | 55,564 psi | 87% | 2884 fps | 100% |
| Vihtavuori N140 | <<locked>> | 90% | 56,594 psi | 89% | 2900 fps | 100% |
| Vihtavuori N150 | <<locked>> | 96% | 56,565 psi | 89% | 2927 fps | 100% |
| Vihtavuori N160 | <<locked>> | 98% | 53,911 psi | 84% | 2946 fps | 98.9% |
| Vihtavuori N530 | <<locked>> | 86% | 56,347 psi | 88% | 2927 fps | 100% |
| Vihtavuori N540 | <<locked>> | 90% | 54,839 psi | 86% | 2894 fps | 100% |
| Vihtavuori N550ᴾ | <<locked>> | 100% | 56,681 psi | 89% | 3009 fps | 99.1% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 41,858 psi | 66% | 2815 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 98% | 54,462 psi | 85% | 2930 fps | 99.9% |
| Winchester 748 | <<locked>> | 86% | 56,289 psi | 88% | 2976 fps | 100% |
| Winchester 760 | <<locked>> | 98% | 55,405 psi | 87% | 3015 fps | 97.1% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 34,389 psi | 54% | 2713 fps | 96.7% |
| Winchester StaBALL Match | <<locked>> | 88% | 54,955 psi | 86% | 2949 fps | 99.9% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 47,892 psi | 75% | 2733 fps | 100% |
| Accurate 2460 | <<locked>> | 80% | 52,475 psi | 82% | 2844 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 40,509 psi | 63% | 2644 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 47,659 psi | 75% | 2802 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 52,214 psi | 82% | 2831 fps | 95.4% |
| Accurate 4064 | <<locked>> | 80% | 38,290 psi | 60% | 2635 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 36,825 psi | 58% | 2657 fps | 95.1% |
| ADI AR 2206H | <<locked>> | 80% | 44,179 psi | 69% | 2753 fps | 98.4% |
| ADI AR 2208 | <<locked>> | 80% | 37,507 psi | 59% | 2595 fps | 96% |
| ADI Benchmark 8208 | <<locked>> | 80% | 46,209 psi | 72% | 2766 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 80% | 46,325 psi | 73% | 2756 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 54,085 psi | 85% | 2979 fps | 99.9% |
| Alliant Power Pro 2000-MR | 60.5 gr | 80% | 40,103 psi | 63% | 2772 fps | 96.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 37,028 psi | 58% | 2615 fps | 97.6% |
| Alliant Reloder-10x | <<locked>> | 80% | 53,795 psi | 84% | 2831 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 39,885 psi | 63% | 2680 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 36,970 psi | 58% | 2674 fps | 95.2% |
| Alliant Reloder-17 | 61 gr | 82% | 34,171 psi | 54% | 2628 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 96% | 33,852 psi | 53% | 2618 fps | 95.7% |
| Alliant Reloder-26 | <<locked>> | 98% | 39,972 psi | 63% | 2822 fps | 95.4% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 43,308 psi | 68% | 2753 fps | 97.3% |
| Bofors RP3 | <<locked>> | 80% | 36,724 psi | 58% | 2618 fps | 97.6% |
| Bofors RP7 | <<locked>> | 94% | 51,764 psi | 81% | 2864 fps | 95.6% |
| Hodgdon Benchmark | <<locked>> | 80% | 47,906 psi | 75% | 2756 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 80% | 45,063 psi | 71% | 2785 fps | 99.7% |
| Hodgdon CFE223 | <<locked>> | 80% | 49,647 psi | 78% | 2930 fps | 98.9% |
| Hodgdon H322 | <<locked>> | 80% | 52,779 psi | 83% | 2867 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 53,911 psi | 84% | 2894 fps | 100% |
| Hodgdon H380 | <<locked>> | 82% | 40,234 psi | 63% | 2680 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 94% | 48,312 psi | 76% | 2890 fps | 95.5% |
| Hodgdon H4350 | <<locked>> | 94% | 52,547 psi | 82% | 2917 fps | 95% |
| Hodgdon H4895 | <<locked>> | 80% | 44,556 psi | 70% | 2766 fps | 98.9% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 31,865 psi | 50% | 2510 fps | 95.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 40,451 psi | 63% | 2730 fps | 98.5% |
| Hodgdon Superformance | <<locked>> | 96% | 52,330 psi | 82% | 2979 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,266 psi | 41% | 1614 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 42,728 psi | 67% | 2713 fps | 98.5% |
| IMR 3031 | <<locked>> | 80% | 44,208 psi | 69% | 2766 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 39,378 psi | 62% | 2631 fps | 96.9% |
| IMR 4166 Enduron | <<locked>> | 84% | 47,543 psi | 75% | 2762 fps | 95.2% |
| IMR 4198 | <<locked>> | 80% | 53,737 psi | 84% | 2789 fps | 100% |
| IMR 4350 | <<locked>> | 98% | 51,895 psi | 81% | 2887 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 90% | 47,398 psi | 74% | 2789 fps | 95% |
| IMR 4831 | <<locked>> | 90% | 38,189 psi | 60% | 2674 fps | 95.7% |
| IMR 4895 | <<locked>> | 80% | 40,857 psi | 64% | 2713 fps | 97.8% |
| IMR 8208 XBR | <<locked>> | 80% | 46,209 psi | 72% | 2766 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 80% | 52,330 psi | 82% | 2854 fps | 100% |
| Lovex D073.6 | <<locked>> | 80% | 43,236 psi | 68% | 2733 fps | 99.9% |
| Lovex S060 | <<locked>> | 80% | 44,106 psi | 69% | 2690 fps | 98.4% |
| Lovex S062 | <<locked>> | 80% | 39,247 psi | 62% | 2635 fps | 98.5% |
| Lovex S065 | <<locked>> | 88% | 41,379 psi | 65% | 2677 fps | 95% |
| Lovex S070 | <<locked>> | 94% | 47,427 psi | 74% | 2815 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 43,149 psi | 68% | 2703 fps | 99.1% |
| Norma 202 | <<locked>> | 80% | 43,395 psi | 68% | 2713 fps | 100% |
| Norma 203B | <<locked>> | 80% | 39,262 psi | 62% | 2671 fps | 97.3% |
| Norma URP | <<locked>> | 88% | 37,202 psi | 58% | 2664 fps | 95.1% |
| Ramshot Big Game | <<locked>> | 80% | 38,798 psi | 61% | 2680 fps | 97% |
| Ramshot Hunter | <<locked>> | 94% | 44,266 psi | 69% | 2818 fps | 95.4% |
| Ramshot TAC | <<locked>> | 80% | 46,079 psi | 72% | 2762 fps | 96.6% |
| Ramshot Wild Boar | <<locked>> | 80% | 45,658 psi | 72% | 2789 fps | 98.7% |
| Ramshot X-Terminator | <<locked>> | 80% | 49,850 psi | 78% | 2812 fps | 99.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,643 psi | 42% | 1654 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 51,779 psi | 81% | 2851 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 46,311 psi | 73% | 2776 fps | 95.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 41,742 psi | 65% | 2785 fps | 97.4% |
| ReloadSwiss RS 60 | 59.5 gr | 80% | 33,997 psi | 53% | 2638 fps | 98.4% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 39,247 psi | 62% | 2736 fps | 95.6% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 42,177 psi | 66% | 2808 fps | 95.7% |
| Rottweil R 901 | <<locked>> | 80% | 47,094 psi | 74% | 2753 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 41,060 psi | 64% | 2654 fps | 98.8% |
| Rottweil R 903 | <<locked>> | 80% | 34,577 psi | 54% | 2562 fps | 96.6% |
| Rottweil R 907 | <<locked>> | 94% | 51,764 psi | 81% | 2864 fps | 95.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 41,379 psi | 65% | 2677 fps | 95% |
| Shooters World Match Rifle | <<locked>> | 80% | 43,236 psi | 68% | 2733 fps | 99.9% |
| Shooters World Precision | <<locked>> | 80% | 39,247 psi | 62% | 2635 fps | 98.5% |
| Shooters World SW4350 | <<locked>> | 94% | 47,427 psi | 74% | 2815 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 35,418 psi | 56% | 2605 fps | 95.9% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 44,367 psi | 70% | 2736 fps | 96.7% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 42,569 psi | 67% | 2717 fps | 98.1% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 44,614 psi | 70% | 2664 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 37,072 psi | 58% | 2526 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 46,572 psi | 73% | 2730 fps | 95% |
| Somchem S321 | <<locked>> | 80% | 49,980 psi | 78% | 2848 fps | 99.9% |
| Somchem S335 | <<locked>> | 80% | 44,121 psi | 69% | 2664 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 44,106 psi | 69% | 2736 fps | 98.3% |
| Somchem S355 | <<locked>> | 80% | 35,331 psi | 55% | 2566 fps | 96.6% |
| Somchem S365 | <<locked>> | 84% | 29,196 psi | 46% | 2493 fps | 95.5% |
| Vihtavuori N130 | <<locked>> | 80% | 50,328 psi | 79% | 2733 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 44,904 psi | 70% | 2661 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 40,567 psi | 64% | 2644 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 41,278 psi | 65% | 2651 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 33,721 psi | 53% | 2507 fps | 97.5% |
| Vihtavuori N160 | <<locked>> | 88% | 38,769 psi | 61% | 2667 fps | 95.6% |
| Vihtavuori N530 | <<locked>> | 80% | 46,311 psi | 73% | 2762 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 80% | 39,682 psi | 62% | 2635 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 38,276 psi | 60% | 2667 fps | 95.2% |
| Vihtavuori N555 | <<locked>> | 96% | 36,637 psi | 57% | 2703 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 31,923 psi | 50% | 2474 fps | 95.3% |
| Winchester 748 | <<locked>> | 80% | 45,832 psi | 72% | 2805 fps | 99.8% |
| Winchester 760 | <<locked>> | 94% | 48,544 psi | 76% | 2897 fps | 95.6% |
| Winchester StaBALL HD | <<locked>> | 98% | 32,184 psi | 50% | 2641 fps | 95.3% |
| Winchester StaBALL Match | <<locked>> | 80% | 42,148 psi | 66% | 2723 fps | 98.5% |
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 102 powders for .325 WSM loaded with the .321 | 170gr | Speer Hot-Cor. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 3,091 fps; across all powders the maximum-charge window runs from 1,808 fps to 3,091 fps. Accurate 4350 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 54–90 %, leaving at least 10 % headroom. 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. ReloadSwiss RS 60, Alliant Reloder-17, Alliant Power Pro 2000-MR rank at the top here: for .325 WSM with the .321 | 170gr | Speer Hot-Cor 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.