Load Specifications
Bullet:.323 | 227gr | MEN SPRN
Bullet Manufacturer:MEN
Bullet Weight:227 gr
Bullet Diameter:0.323"
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
Recommended Twist Rate:1:6.0
Load data in caliber .325 WSM with .323 | 227gr | MEN SPRN bullet and 107 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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: 23"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 84% | 57,319 psi | 90% | 2503 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 54,984 psi | 86% | 2526 fps | 98.9% |
| Accurate 3100ᴾ | <<locked>> | 100% | 52,112 psi | 82% | 2569 fps | 99.6% |
| Accurate 4064 | <<locked>> | 86% | 57,682 psi | 90% | 2556 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 54,433 psi | 85% | 2612 fps | 100% |
| Accurate High Countryᴾ | <<locked>> | 100% | 56,884 psi | 89% | 2749 fps | 98% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 53,809 psi | 84% | 2690 fps | 96.1% |
| ADI AR 2206H | <<locked>> | 82% | 56,608 psi | 89% | 2582 fps | 100% |
| ADI AR 2208 | <<locked>> | 86% | 54,273 psi | 85% | 2543 fps | 100% |
| ADI AR 2209 | <<locked>> | 98% | 55,405 psi | 87% | 2651 fps | 98.4% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 52,968 psi | 83% | 2641 fps | 96.8% |
| Alliant Power Pro 2000-MR | <<locked>> | 84% | 57,188 psi | 90% | 2703 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,463 psi | 87% | 2651 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 98% | 55,463 psi | 87% | 2651 fps | 98.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 55,042 psi | 86% | 2562 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 55,317 psi | 87% | 2582 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 94% | 55,187 psi | 86% | 2661 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 90% | 56,594 psi | 89% | 2687 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 54,679 psi | 86% | 2641 fps | 98.4% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2641 fps | 98.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 48,718 psi | 76% | 2582 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 42,656 psi | 67% | 2513 fps | 99% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,753 psi | 87% | 2759 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 82% | 56,478 psi | 89% | 2602 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 47,427 psi | 74% | 2569 fps | 97.1% |
| Bofors RP3 | <<locked>> | 86% | 55,753 psi | 87% | 2575 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 51,648 psi | 81% | 2641 fps | 98.1% |
| Bofors RP7 | <<locked>> | 90% | 55,216 psi | 87% | 2566 fps | 99.1% |
| Hodgdon H380 | <<locked>> | 86% | 56,333 psi | 88% | 2595 fps | 100% |
| Hodgdon H414 | <<locked>> | 92% | 56,753 psi | 89% | 2661 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 90% | 56,579 psi | 89% | 2621 fps | 98.8% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 57,000 psi | 89% | 2648 fps | 97% |
| Hodgdon H4831 SCᴾ | <<locked>> | 100% | 55,622 psi | 87% | 2628 fps | 96.7% |
| Hodgdon H4895 | <<locked>> | 82% | 57,261 psi | 90% | 2589 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 55,434 psi | 87% | 2589 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 84% | 57,566 psi | 90% | 2625 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 41,655 psi | 65% | 2533 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 92% | 56,826 psi | 89% | 2697 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,318 psi | 57% | 1572 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,737 psi | 86% | 2543 fps | 100% |
| IMR 4064 | <<locked>> | 86% | 57,174 psi | 90% | 2569 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 56,318 psi | 88% | 2556 fps | 99.5% |
| IMR 4350 | <<locked>> | 94% | 55,840 psi | 88% | 2595 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 90% | 56,869 psi | 89% | 2592 fps | 99.5% |
| IMR 4831 | <<locked>> | 94% | 54,940 psi | 86% | 2602 fps | 100% |
| IMR 4895 | <<locked>> | 84% | 56,753 psi | 89% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 54,926 psi | 86% | 2585 fps | 96.8% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 50,546 psi | 79% | 2618 fps | 96.4% |
| Lovex D073.6 | <<locked>> | 82% | 57,000 psi | 89% | 2556 fps | 100% |
| Lovex S060 | <<locked>> | 82% | 55,317 psi | 87% | 2507 fps | 100% |
| Lovex S062 | <<locked>> | 86% | 57,276 psi | 90% | 2562 fps | 100% |
| Lovex S065 | <<locked>> | 92% | 56,724 psi | 89% | 2585 fps | 99.9% |
| Lovex S070 | <<locked>> | 92% | 54,563 psi | 86% | 2579 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 43,294 psi | 68% | 2431 fps | 98.5% |
| Norma 201 | <<locked>> | 82% | 55,448 psi | 87% | 2530 fps | 100% |
| Norma 202 | <<locked>> | 82% | 56,115 psi | 88% | 2523 fps | 100% |
| Norma 203B | <<locked>> | 84% | 54,578 psi | 86% | 2569 fps | 100% |
| Norma 204 | <<locked>> | 94% | 56,652 psi | 89% | 2644 fps | 98.5% |
| Norma MRPᴾ | <<locked>> | 100% | 54,882 psi | 86% | 2720 fps | 99.5% |
| Norma URP | <<locked>> | 94% | 56,811 psi | 89% | 2644 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 55,245 psi | 87% | 2595 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 50,662 psi | 79% | 2631 fps | 96.8% |
| Ramshot Hunter | <<locked>> | 94% | 55,448 psi | 87% | 2648 fps | 99.8% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 45,005 psi | 71% | 2516 fps | 97.2% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,072 psi | 58% | 1611 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 86% | 56,202 psi | 88% | 2582 fps | 99.7% |
| ReloadSwiss RS 52 | <<locked>> | 82% | 56,144 psi | 88% | 2641 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 88% | 55,970 psi | 88% | 2674 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 54,259 psi | 85% | 2635 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 94% | 56,376 psi | 88% | 2710 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 41,365 psi | 65% | 2526 fps | 97.1% |
| Rottweil R 902 | <<locked>> | 84% | 56,028 psi | 88% | 2530 fps | 100% |
| Rottweil R 903 | <<locked>> | 88% | 55,854 psi | 88% | 2575 fps | 100% |
| Rottweil R 904 | <<locked>> | 98% | 57,159 psi | 90% | 2621 fps | 97.7% |
| Rottweil R 905ᴾ | <<locked>> | 100% | 57,377 psi | 90% | 2677 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 90% | 55,216 psi | 87% | 2566 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 92% | 56,724 psi | 89% | 2585 fps | 99.9% |
| Shooters World Match Rifle | <<locked>> | 82% | 57,000 psi | 89% | 2556 fps | 100% |
| Shooters World Precision | <<locked>> | 86% | 57,276 psi | 90% | 2562 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 54,563 psi | 86% | 2579 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 57,319 psi | 90% | 2628 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 54,868 psi | 86% | 2556 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 82% | 56,188 psi | 88% | 2461 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 88% | 56,927 psi | 89% | 2464 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 92% | 56,724 psi | 89% | 2546 fps | 99.5% |
| SNPE Vectan Tubal 8000ᴾ | <<locked>> | 100% | 56,869 psi | 89% | 2674 fps | 98.8% |
| Somchem S335 | <<locked>> | 82% | 55,941 psi | 88% | 2461 fps | 100% |
| Somchem S341 | <<locked>> | 82% | 57,450 psi | 90% | 2575 fps | 100% |
| Somchem S355 | <<locked>> | 88% | 55,767 psi | 87% | 2569 fps | 100% |
| Somchem S361 | <<locked>> | 96% | 55,274 psi | 87% | 2569 fps | 96.6% |
| Somchem S365 | <<locked>> | 96% | 55,782 psi | 87% | 2644 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 54,462 psi | 85% | 2605 fps | 99% |
| Vihtavuori N133 | <<locked>> | 82% | 56,695 psi | 89% | 2444 fps | 100% |
| Vihtavuori N135 | <<locked>> | 84% | 56,289 psi | 88% | 2487 fps | 100% |
| Vihtavuori N140 | <<locked>> | 84% | 56,449 psi | 88% | 2503 fps | 100% |
| Vihtavuori N150 | <<locked>> | 90% | 56,942 psi | 89% | 2543 fps | 100% |
| Vihtavuori N160 | <<locked>> | 92% | 55,390 psi | 87% | 2592 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 50,343 psi | 79% | 2533 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 84% | 54,549 psi | 85% | 2503 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 54,447 psi | 85% | 2598 fps | 100% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 54,694 psi | 86% | 2651 fps | 100% |
| Vihtavuori N560ᴾ | <<locked>> | 100% | 55,376 psi | 87% | 2710 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 54,984 psi | 86% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 92% | 56,753 psi | 89% | 2661 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 43,932 psi | 69% | 2631 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 55,158 psi | 86% | 2566 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 54,505 psi | 85% | 2598 fps | 98.2% |
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 2495 | <<locked>> | 80% | 50,473 psi | 79% | 2418 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 48,240 psi | 76% | 2425 fps | 97.9% |
| Accurate 3100 | <<locked>> | 86% | 32,503 psi | 51% | 2218 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 47,834 psi | 75% | 2425 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 36,216 psi | 57% | 2306 fps | 98.3% |
| Accurate High Country | <<locked>> | 94% | 46,050 psi | 72% | 2579 fps | 95.7% |
| Accurate MAGPRO | <<locked>> | 98% | 50,067 psi | 78% | 2635 fps | 95.2% |
| ADI AR 2206H | <<locked>> | 80% | 53,156 psi | 83% | 2533 fps | 100% |
| ADI AR 2208 | <<locked>> | 80% | 45,252 psi | 71% | 2405 fps | 99.8% |
| ADI AR 2209 | <<locked>> | 90% | 42,830 psi | 67% | 2441 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 96% | 46,456 psi | 73% | 2533 fps | 95.1% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 49,574 psi | 78% | 2595 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,844 psi | 67% | 2441 fps | 95.8% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 42,844 psi | 67% | 2441 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 45,600 psi | 71% | 2425 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 48,718 psi | 76% | 2487 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 35,578 psi | 56% | 2316 fps | 98.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 40,001 psi | 63% | 2428 fps | 99.9% |
| Alliant Reloder-19 | <<locked>> | 90% | 42,351 psi | 66% | 2438 fps | 95.7% |
| Alliant Reloder-22 | <<locked>> | 92% | 39,740 psi | 62% | 2428 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 26,005 psi | 41% | 2096 fps | 96.1% |
| Alliant Reloder-25 | <<locked>> | 90% | 31,241 psi | 49% | 2251 fps | 95% |
| Alliant Reloder-26 | 61 gr | 82% | 29,370 psi | 46% | 2244 fps | 95.2% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 52,852 psi | 83% | 2552 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 41,814 psi | 66% | 2470 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 45,803 psi | 72% | 2434 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 39,740 psi | 62% | 2428 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 40,524 psi | 64% | 2323 fps | 96.3% |
| Hodgdon H380 | <<locked>> | 80% | 46,224 psi | 72% | 2444 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 80% | 38,101 psi | 60% | 2349 fps | 96.2% |
| Hodgdon H4350 | <<locked>> | 80% | 41,205 psi | 65% | 2365 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 96% | 49,661 psi | 78% | 2539 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 96% | 48,704 psi | 76% | 2523 fps | 95.1% |
| Hodgdon H4895 | <<locked>> | 80% | 53,751 psi | 84% | 2543 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 33,025 psi | 52% | 2221 fps | 98.9% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 50,401 psi | 79% | 2530 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 39,059 psi | 61% | 2477 fps | 95% |
| Hodgdon Superformance | 61.4 gr | 80% | 37,028 psi | 58% | 2356 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,253 psi | 43% | 1404 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 51,358 psi | 80% | 2497 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,616 psi | 75% | 2434 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 49,676 psi | 78% | 2457 fps | 98.7% |
| IMR 4350 | <<locked>> | 82% | 38,580 psi | 60% | 2306 fps | 95.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 41,800 psi | 66% | 2349 fps | 97.1% |
| IMR 4831 | <<locked>> | 80% | 34,867 psi | 55% | 2264 fps | 98% |
| IMR 4895 | <<locked>> | 80% | 49,951 psi | 78% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 48,472 psi | 76% | 2484 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 98% | 47,311 psi | 74% | 2562 fps | 95.5% |
| Lovex D073.6 | <<locked>> | 80% | 53,417 psi | 84% | 2510 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 52,199 psi | 82% | 2464 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 47,805 psi | 75% | 2431 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 39,450 psi | 62% | 2306 fps | 97.9% |
| Lovex S070 | <<locked>> | 80% | 37,652 psi | 59% | 2287 fps | 96.3% |
| Lovex S071 | <<locked>> | 92% | 33,489 psi | 52% | 2241 fps | 95.7% |
| Norma 201 | <<locked>> | 80% | 52,025 psi | 82% | 2480 fps | 100% |
| Norma 202 | <<locked>> | 80% | 52,663 psi | 83% | 2480 fps | 100% |
| Norma 203B | <<locked>> | 80% | 48,051 psi | 75% | 2474 fps | 100% |
| Norma 204 | <<locked>> | 86% | 43,381 psi | 68% | 2434 fps | 95.8% |
| Norma MRP | <<locked>> | 88% | 36,463 psi | 57% | 2388 fps | 95.4% |
| Norma URP | <<locked>> | 80% | 36,143 psi | 57% | 2303 fps | 98.1% |
| Ramshot Big Game | <<locked>> | 80% | 48,182 psi | 76% | 2497 fps | 100% |
| Ramshot Grand | <<locked>> | 98% | 47,094 psi | 74% | 2569 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 34,983 psi | 55% | 2290 fps | 96.1% |
| Ramshot Magnum | <<locked>> | 96% | 39,059 psi | 61% | 2402 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,644 psi | 43% | 1434 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 46,195 psi | 72% | 2431 fps | 98.6% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 52,504 psi | 82% | 2592 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 42,496 psi | 67% | 2477 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 35,955 psi | 56% | 2326 fps | 97.9% |
| ReloadSwiss RS 70 | 59 gr | 80% | 34,969 psi | 55% | 2326 fps | 97.2% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 38,551 psi | 60% | 2464 fps | 96% |
| Rottweil R 902 | <<locked>> | 80% | 49,574 psi | 78% | 2441 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 43,178 psi | 68% | 2388 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 47,311 psi | 74% | 2474 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 90% | 41,466 psi | 65% | 2421 fps | 95.7% |
| Rottweil R 907 | <<locked>> | 80% | 40,524 psi | 64% | 2323 fps | 96.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 39,450 psi | 62% | 2306 fps | 97.9% |
| Shooters World Match Rifle | <<locked>> | 80% | 53,417 psi | 84% | 2510 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 47,805 psi | 75% | 2431 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 37,652 psi | 59% | 2287 fps | 96.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 44,164 psi | 69% | 2434 fps | 99.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 51,590 psi | 81% | 2510 fps | 100% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 52,924 psi | 83% | 2418 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 44,657 psi | 70% | 2303 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 38,522 psi | 60% | 2254 fps | 96.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 41,075 psi | 64% | 2418 fps | 95.5% |
| Somchem S335 | <<locked>> | 80% | 52,620 psi | 82% | 2418 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 53,722 psi | 84% | 2526 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 43,555 psi | 68% | 2388 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 48,588 psi | 76% | 2467 fps | 95% |
| Somchem S365 | <<locked>> | 80% | 32,605 psi | 51% | 2264 fps | 99.7% |
| Somchem S385 | <<locked>> | 86% | 36,927 psi | 58% | 2306 fps | 95.1% |
| Vihtavuori N133 | <<locked>> | 80% | 53,432 psi | 84% | 2405 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 49,806 psi | 78% | 2408 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 49,937 psi | 78% | 2421 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 41,539 psi | 65% | 2323 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 37,492 psi | 59% | 2303 fps | 98.4% |
| Vihtavuori N165 | <<locked>> | 92% | 38,696 psi | 61% | 2333 fps | 95.2% |
| Vihtavuori N540 | <<locked>> | 80% | 48,167 psi | 75% | 2418 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 36,956 psi | 58% | 2303 fps | 98.1% |
| Vihtavuori N555 | <<locked>> | 80% | 28,398 psi | 45% | 2165 fps | 96.2% |
| Vihtavuori N560 | <<locked>> | 96% | 48,356 psi | 76% | 2598 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 36,593 psi | 57% | 2277 fps | 99.6% |
| Winchester 760 | <<locked>> | 80% | 38,290 psi | 60% | 2352 fps | 96.3% |
| Winchester StaBALL HD | <<locked>> | 82% | 24,381 psi | 38% | 2119 fps | 95.6% |
| Winchester StaBALL Match | <<locked>> | 80% | 51,532 psi | 81% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 41,510 psi | 65% | 2392 fps | 95.3% |
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 107 powders for .325 WSM loaded with the .323 | 227gr | MEN SPRN. Alliant Reloder-26 delivers the highest muzzle velocity at 2,759 fps; across all powders the maximum-charge window runs from 1,572 fps to 2,759 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 227.0 gr projectile in 0.323" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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-26, ReloadSwiss RS 70, Hodgdon Superformance rank at the top here: for .325 WSM with the .323 | 227gr | MEN SPRN 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.