Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:215 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:1:10.0
Load data in caliber .300 WSM with .308 | 215gr | Berger Hybrid Target bullet and 99 powders. The key underlying parameters are shown in the table above.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 82% | 56,043 psi | 88% | 2470 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 57,145 psi | 90% | 2549 fps | 99.6% |
| Accurate 3100ᴾ | <<locked>> | 100% | 54,926 psi | 86% | 2595 fps | 100% |
| Accurate 4064 | <<locked>> | 84% | 56,579 psi | 89% | 2523 fps | 100% |
| Accurate 4350 | <<locked>> | 92% | 57,334 psi | 90% | 2635 fps | 100% |
| Accurate High Country | <<locked>> | 98% | 56,231 psi | 88% | 2736 fps | 98.7% |
| Accurate MAGPROᴾ | <<locked>> | 100% | 56,898 psi | 89% | 2733 fps | 97.7% |
| ADI AR 2208 | <<locked>> | 86% | 56,318 psi | 88% | 2556 fps | 100% |
| ADI AR 2209 | <<locked>> | 96% | 54,375 psi | 85% | 2631 fps | 99% |
| ADI AR 2213ᴾ | <<locked>> | 100% | 55,564 psi | 87% | 2680 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 35,810 psi | 56% | 2379 fps | 96.5% |
| Alliant Power Pro 2000-MR | <<locked>> | 82% | 55,796 psi | 87% | 2674 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 96% | 54,650 psi | 86% | 2631 fps | 99% |
| Alliant Reloder- TS 15.5 | <<locked>> | 86% | 57,450 psi | 90% | 2579 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 57,624 psi | 90% | 2602 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,520 psi | 85% | 2638 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 88% | 55,608 psi | 87% | 2657 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 98% | 57,232 psi | 90% | 2671 fps | 99.3% |
| Alliant Reloder-22ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2680 fps | 99.2% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 51,547 psi | 81% | 2608 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 44,976 psi | 70% | 2556 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 98% | 55,172 psi | 86% | 2740 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 49,995 psi | 78% | 2612 fps | 98.5% |
| Bofors RP3 | <<locked>> | 84% | 54,766 psi | 86% | 2549 fps | 100% |
| Bofors RP5ᴾ | <<locked>> | 100% | 54,534 psi | 85% | 2680 fps | 99.2% |
| Bofors RP7 | <<locked>> | 90% | 57,290 psi | 90% | 2589 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 44,454 psi | 70% | 2493 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 84% | 54,839 psi | 86% | 2566 fps | 100% |
| Hodgdon H414 | <<locked>> | 90% | 55,666 psi | 87% | 2638 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 88% | 55,361 psi | 87% | 2598 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 98% | 55,753 psi | 87% | 2628 fps | 97.7% |
| Hodgdon H4831 SC | <<locked>> | 98% | 54,563 psi | 86% | 2612 fps | 97.5% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,679 psi | 86% | 2566 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 56,144 psi | 88% | 2592 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,019 psi | 69% | 2592 fps | 98.2% |
| Hodgdon Superformance | <<locked>> | 90% | 55,869 psi | 88% | 2677 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,637 psi | 57% | 1568 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 56,797 psi | 89% | 2556 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 55,956 psi | 88% | 2539 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,969 psi | 86% | 2530 fps | 99.7% |
| IMR 4350 | <<locked>> | 92% | 54,998 psi | 86% | 2575 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 88% | 55,724 psi | 87% | 2566 fps | 99.8% |
| IMR 4831 | <<locked>> | 94% | 57,638 psi | 90% | 2625 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 55,506 psi | 87% | 2575 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 98% | 57,363 psi | 90% | 2615 fps | 98.1% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,040 psi | 83% | 2657 fps | 98% |
| Lovex S060 | <<locked>> | 82% | 57,464 psi | 90% | 2523 fps | 100% |
| Lovex S062 | <<locked>> | 84% | 56,159 psi | 88% | 2533 fps | 100% |
| Lovex S065 | <<locked>> | 90% | 55,840 psi | 88% | 2562 fps | 100% |
| Lovex S070 | <<locked>> | 92% | 57,130 psi | 90% | 2605 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 45,672 psi | 72% | 2464 fps | 99.4% |
| Norma 201 | <<locked>> | 82% | 57,363 psi | 90% | 2536 fps | 100% |
| Norma 203B | <<locked>> | 84% | 56,913 psi | 89% | 2585 fps | 100% |
| Norma 204 | <<locked>> | 92% | 55,564 psi | 87% | 2625 fps | 99% |
| Norma MRP | <<locked>> | 98% | 54,244 psi | 85% | 2703 fps | 99.8% |
| Norma URP | <<locked>> | 92% | 55,999 psi | 88% | 2621 fps | 100% |
| Ramshot Big Game | <<locked>> | 84% | 57,725 psi | 90% | 2612 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 53,258 psi | 83% | 2671 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 92% | 54,505 psi | 85% | 2628 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 47,674 psi | 75% | 2562 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,304 psi | 58% | 1604 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,737 psi | 86% | 2552 fps | 99.9% |
| ReloadSwiss RS 60 | <<locked>> | 86% | 54,940 psi | 86% | 2644 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 92% | 57,101 psi | 89% | 2657 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 92% | 55,347 psi | 87% | 2684 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 43,729 psi | 69% | 2585 fps | 98.9% |
| Rottweil R 902 | <<locked>> | 82% | 54,752 psi | 86% | 2497 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,911 psi | 86% | 2546 fps | 100% |
| Rottweil R 904 | <<locked>> | 96% | 56,188 psi | 88% | 2605 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 98% | 56,753 psi | 89% | 2661 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 90% | 57,290 psi | 90% | 2589 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 90% | 55,840 psi | 88% | 2562 fps | 100% |
| Shooters World Precision | <<locked>> | 84% | 56,159 psi | 88% | 2533 fps | 100% |
| Shooters World SW4350 | <<locked>> | 92% | 57,130 psi | 90% | 2605 fps | 99.9% |
| SNPE Vectan SP 11 | <<locked>> | 86% | 56,115 psi | 88% | 2598 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 57,174 psi | 90% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 86% | 55,796 psi | 87% | 2434 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 90% | 55,230 psi | 87% | 2520 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 98% | 56,275 psi | 88% | 2657 fps | 99.3% |
| Somchem S335 | <<locked>> | 82% | 57,740 psi | 90% | 2467 fps | 100% |
| Somchem S355 | <<locked>> | 86% | 54,824 psi | 86% | 2543 fps | 100% |
| Somchem S361 | <<locked>> | 94% | 54,201 psi | 85% | 2549 fps | 97.3% |
| Somchem S365 | <<locked>> | 94% | 55,129 psi | 86% | 2618 fps | 100% |
| Somchem S385 | <<locked>> | 98% | 57,188 psi | 90% | 2635 fps | 99.7% |
| Vihtavuori N135 | <<locked>> | 82% | 55,100 psi | 86% | 2454 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 55,230 psi | 87% | 2470 fps | 100% |
| Vihtavuori N150 | <<locked>> | 88% | 55,869 psi | 88% | 2516 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,389 psi | 85% | 2566 fps | 100% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 52,852 psi | 83% | 2562 fps | 99.1% |
| Vihtavuori N540 | <<locked>> | 84% | 56,782 psi | 89% | 2516 fps | 100% |
| Vihtavuori N550 | <<locked>> | 92% | 57,072 psi | 89% | 2621 fps | 100% |
| Vihtavuori N555 | <<locked>> | 98% | 54,201 psi | 85% | 2631 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,592 psi | 86% | 2697 fps | 97.9% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 46,514 psi | 73% | 2562 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 57,609 psi | 90% | 2582 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 55,956 psi | 88% | 2641 fps | 99.9% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 46,601 psi | 73% | 2674 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 82% | 57,276 psi | 90% | 2575 fps | 100% |
| Winchester Supreme 780ᴾ | <<locked>> | 100% | 57,522 psi | 90% | 2635 fps | 99.3% |
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2495 | <<locked>> | 80% | 52,736 psi | 83% | 2431 fps | 100% |
| Accurate 2700 | <<locked>> | 80% | 50,125 psi | 79% | 2448 fps | 98.9% |
| Accurate 3100 | <<locked>> | 82% | 30,081 psi | 47% | 2159 fps | 95.5% |
| Accurate 4064 | <<locked>> | 80% | 50,009 psi | 78% | 2441 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,189 psi | 60% | 2339 fps | 99.3% |
| Accurate High Country | <<locked>> | 88% | 39,755 psi | 62% | 2457 fps | 95% |
| Accurate MAGPRO | <<locked>> | 94% | 46,296 psi | 73% | 2569 fps | 95.4% |
| ADI AR 2208 | <<locked>> | 80% | 46,992 psi | 74% | 2421 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 37,028 psi | 58% | 2326 fps | 95% |
| ADI AR 2213 | <<locked>> | 92% | 42,670 psi | 67% | 2464 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 98% | 33,663 psi | 53% | 2323 fps | 95.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 51,924 psi | 81% | 2621 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 84% | 37,159 psi | 58% | 2326 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,674 psi | 75% | 2444 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,749 psi | 80% | 2507 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,217 psi | 58% | 2349 fps | 99.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,061 psi | 66% | 2457 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 36,811 psi | 58% | 2323 fps | 95% |
| Alliant Reloder-22 | <<locked>> | 88% | 36,738 psi | 58% | 2365 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,325 psi | 43% | 2139 fps | 98% |
| Alliant Reloder-25 | <<locked>> | 86% | 29,051 psi | 46% | 2198 fps | 95.4% |
| Alliant Reloder-26 | <<locked>> | 80% | 28,964 psi | 45% | 2238 fps | 96.4% |
| Bofors RP15 | <<locked>> | 92% | 38,870 psi | 61% | 2408 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 48,051 psi | 75% | 2457 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 36,738 psi | 58% | 2365 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 42,264 psi | 66% | 2349 fps | 97.7% |
| Hodgdon H1000 | <<locked>> | 98% | 41,597 psi | 65% | 2441 fps | 95.8% |
| Hodgdon H380 | <<locked>> | 80% | 48,196 psi | 76% | 2470 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 40,001 psi | 63% | 2382 fps | 97.8% |
| Hodgdon H4350 | <<locked>> | 80% | 43,105 psi | 68% | 2402 fps | 97.3% |
| Hodgdon H4831 | <<locked>> | 92% | 45,629 psi | 72% | 2470 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 44,730 psi | 70% | 2457 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,679 psi | 54% | 2251 fps | 99.7% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 52,663 psi | 83% | 2546 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 36,347 psi | 57% | 2421 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 38,943 psi | 61% | 2395 fps | 97.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,456 psi | 43% | 1398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 53,287 psi | 84% | 2510 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 49,458 psi | 78% | 2451 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,605 psi | 81% | 2480 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 37,724 psi | 59% | 2287 fps | 96.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,569 psi | 68% | 2375 fps | 98.3% |
| IMR 4831 | <<locked>> | 80% | 36,767 psi | 58% | 2300 fps | 99.1% |
| IMR 4895 | <<locked>> | 80% | 52,040 psi | 82% | 2530 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 44,788 psi | 70% | 2421 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 94% | 43,482 psi | 68% | 2493 fps | 95.7% |
| Lovex S060 | <<locked>> | 80% | 53,998 psi | 85% | 2477 fps | 100% |
| Lovex S062 | <<locked>> | 80% | 49,690 psi | 78% | 2444 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,118 psi | 64% | 2333 fps | 98.9% |
| Lovex S070 | <<locked>> | 80% | 39,450 psi | 62% | 2320 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 29,428 psi | 46% | 2142 fps | 95.2% |
| Norma 201 | <<locked>> | 80% | 54,070 psi | 85% | 2497 fps | 100% |
| Norma 203B | <<locked>> | 80% | 50,082 psi | 78% | 2493 fps | 100% |
| Norma 204 | <<locked>> | 80% | 37,217 psi | 58% | 2310 fps | 95% |
| Norma MRP | <<locked>> | 84% | 33,576 psi | 53% | 2323 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 38,058 psi | 60% | 2336 fps | 99.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,343 psi | 79% | 2516 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 40,277 psi | 63% | 2444 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 36,796 psi | 58% | 2326 fps | 97.7% |
| Ramshot Magnum | <<locked>> | 92% | 35,882 psi | 56% | 2339 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,905 psi | 44% | 1430 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,254 psi | 76% | 2457 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,657 psi | 70% | 2500 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,971 psi | 60% | 2359 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 36,608 psi | 57% | 2365 fps | 98.7% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 33,301 psi | 52% | 2346 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 51,590 psi | 81% | 2454 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,295 psi | 71% | 2411 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 41,002 psi | 64% | 2359 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 84% | 35,868 psi | 56% | 2306 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 42,264 psi | 66% | 2349 fps | 97.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,118 psi | 64% | 2333 fps | 98.9% |
| Shooters World Precision | <<locked>> | 80% | 49,690 psi | 78% | 2444 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,450 psi | 62% | 2320 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,311 psi | 73% | 2461 fps | 100% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 53,722 psi | 84% | 2526 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,325 psi | 73% | 2313 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,118 psi | 63% | 2280 fps | 97.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 37,782 psi | 59% | 2349 fps | 95.6% |
| Somchem S335 | <<locked>> | 80% | 54,534 psi | 85% | 2428 fps | 100% |
| Somchem S355 | <<locked>> | 80% | 45,469 psi | 71% | 2408 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 44,498 psi | 70% | 2398 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 34,374 psi | 54% | 2297 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 34,200 psi | 54% | 2244 fps | 95.3% |
| Vihtavuori N135 | <<locked>> | 80% | 51,808 psi | 81% | 2415 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 52,098 psi | 82% | 2434 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,511 psi | 68% | 2346 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,363 psi | 62% | 2333 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 88% | 35,752 psi | 56% | 2274 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 50,111 psi | 79% | 2428 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,740 psi | 61% | 2333 fps | 99.2% |
| Vihtavuori N555 | <<locked>> | 80% | 30,153 psi | 47% | 2205 fps | 98% |
| Vihtavuori N560 | <<locked>> | 92% | 44,614 psi | 70% | 2533 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 98% | 43,279 psi | 68% | 2503 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,319 psi | 60% | 2303 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 40,205 psi | 63% | 2385 fps | 97.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 24,105 psi | 38% | 2123 fps | 97.2% |
| Winchester StaBALL Match | <<locked>> | 80% | 53,780 psi | 84% | 2533 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 38,058 psi | 60% | 2326 fps | 95.5% |
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 | 215gr | Berger Hybrid Target. Alliant Reloder-26 delivers the highest muzzle velocity at 2,740 fps; across all powders the maximum-charge window runs from 1,568 fps to 2,740 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 215.0 gr projectile in 0.308" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.