Load Specifications
Load data in caliber .300 Win. Mag. with .308 | 220gr | Lapua ScenarL bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and Accurate MAGPRO.
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 3100 | <<locked>> | 96% | 54,897 psi | 88% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,968 psi | 85% | 2566 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 53,388 psi | 86% | 2677 fps | 98% |
| ADI AR 2208 | <<locked>> | 82% | 54,882 psi | 88% | 2530 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,780 psi | 86% | 2621 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 96% | 54,839 psi | 88% | 2674 fps | 98.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,818 psi | 73% | 2526 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,741 psi | 65% | 2493 fps | 99.1% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,882 psi | 86% | 2618 fps | 99.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 55,970 psi | 90% | 2549 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,882 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,940 psi | 88% | 2631 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,272 psi | 85% | 2608 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,549 psi | 87% | 2671 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 98% | 55,564 psi | 89% | 2641 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,213 psi | 82% | 2648 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 55,869 psi | 90% | 2730 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 53,722 psi | 86% | 2589 fps | 96% |
| Bofors RP15 | <<locked>> | 98% | 53,751 psi | 86% | 2657 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,253 psi | 76% | 2592 fps | 98.3% |
| Bofors RP5 | <<locked>> | 96% | 54,549 psi | 87% | 2671 fps | 99.6% |
| Bofors RP7 | <<locked>> | 86% | 55,898 psi | 90% | 2566 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,575 psi | 81% | 2605 fps | 99% |
| Hodgdon H414 | <<locked>> | 86% | 54,824 psi | 88% | 2618 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 54,244 psi | 87% | 2579 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 55,114 psi | 88% | 2621 fps | 98.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,838 psi | 86% | 2602 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,302 psi | 87% | 2549 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,343 psi | 81% | 2710 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 86% | 55,085 psi | 88% | 2657 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,014 psi | 59% | 1585 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,867 psi | 86% | 2556 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,172 psi | 87% | 2543 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 53,447 psi | 86% | 2562 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 56,405 psi | 90% | 2605 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 98% | 56,333 psi | 90% | 2707 fps | 99.2% |
| Lovex S065 | <<locked>> | 86% | 54,418 psi | 87% | 2539 fps | 100% |
| Lovex S070 | <<locked>> | 88% | 56,028 psi | 90% | 2585 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,344 psi | 84% | 2552 fps | 100% |
| Norma 204 | <<locked>> | 88% | 54,476 psi | 87% | 2608 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 36,187 psi | 58% | 2421 fps | 97.4% |
| Norma MRP | <<locked>> | 94% | 54,462 psi | 87% | 2694 fps | 100% |
| Norma URP | <<locked>> | 88% | 55,288 psi | 89% | 2602 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,997 psi | 85% | 2671 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 88% | 53,838 psi | 86% | 2608 fps | 100% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 55,114 psi | 88% | 2667 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,695 psi | 60% | 1624 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,607 psi | 88% | 2621 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,910 psi | 85% | 2592 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,723 psi | 88% | 2667 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,444 psi | 81% | 2707 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 45,353 psi | 73% | 2595 fps | 96.4% |
| Rottweil R 903 | <<locked>> | 82% | 53,621 psi | 86% | 2520 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 55,129 psi | 88% | 2592 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 94% | 56,217 psi | 90% | 2651 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 86% | 55,898 psi | 90% | 2566 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,418 psi | 87% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 56,028 psi | 90% | 2585 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,984 psi | 88% | 2572 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,070 psi | 87% | 2405 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,838 psi | 86% | 2500 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 55,767 psi | 89% | 2644 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 53,490 psi | 86% | 2513 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,040 psi | 85% | 2536 fps | 98% |
| Somchem S365 | <<locked>> | 90% | 55,259 psi | 89% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,214 psi | 85% | 2575 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 84% | 54,563 psi | 87% | 2490 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,447 psi | 86% | 2546 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 56,159 psi | 90% | 2605 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 88% | 56,246 psi | 90% | 2602 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,505 psi | 87% | 2621 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,433 psi | 87% | 2690 fps | 98.6% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,780 psi | 86% | 2667 fps | 98.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 46,804 psi | 75% | 2602 fps | 96.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,750 psi | 85% | 2510 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,100 psi | 88% | 2621 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,228 psi | 84% | 2717 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,968 psi | 85% | 2572 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 3100 | <<locked>> | 80% | 32,285 psi | 52% | 2198 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 43,482 psi | 70% | 2421 fps | 100% |
| Accurate MAGPRO | 65.2 gr | 88% | 43,207 psi | 69% | 2503 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 51,532 psi | 83% | 2484 fps | 100% |
| ADI AR 2209 | <<locked>> | 80% | 36,405 psi | 58% | 2310 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 39,450 psi | 63% | 2402 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 96% | 40,321 psi | 65% | 2418 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 92% | 31,691 psi | 51% | 2277 fps | 95.9% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 36,680 psi | 59% | 2313 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 52,779 psi | 85% | 2507 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,669 psi | 67% | 2428 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,848 psi | 77% | 2533 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,347 psi | 58% | 2306 fps | 95.9% |
| Alliant Reloder-22 | <<locked>> | 82% | 34,374 psi | 55% | 2303 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,038 psi | 50% | 2224 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,151 psi | 44% | 2139 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 33,359 psi | 53% | 2343 fps | 98.9% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 50,502 psi | 81% | 2539 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 34,142 psi | 55% | 2297 fps | 95.1% |
| Bofors RP30 | <<locked>> | 92% | 36,201 psi | 58% | 2379 fps | 95.2% |
| Bofors RP5 | <<locked>> | 82% | 34,374 psi | 55% | 2303 fps | 95.3% |
| Bofors RP7 | <<locked>> | 80% | 46,427 psi | 74% | 2421 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 36,129 psi | 58% | 2329 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 45,034 psi | 72% | 2467 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 47,805 psi | 77% | 2477 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 42,148 psi | 68% | 2408 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 86% | 41,379 psi | 66% | 2395 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,218 psi | 63% | 2323 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,171 psi | 55% | 2369 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 44,106 psi | 71% | 2487 fps | 99% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,717 psi | 44% | 1414 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,047 psi | 67% | 2365 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,848 psi | 77% | 2448 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 41,379 psi | 66% | 2372 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 41,249 psi | 66% | 2356 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 37,855 psi | 61% | 2382 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 45,527 psi | 73% | 2405 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 43,787 psi | 70% | 2395 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 27,789 psi | 45% | 2087 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 41,756 psi | 67% | 2398 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 31,937 psi | 51% | 2316 fps | 95.5% |
| Norma MRP | 58.2 gr | 80% | 33,489 psi | 54% | 2313 fps | 96.6% |
| Norma URP | <<locked>> | 80% | 42,801 psi | 69% | 2411 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 37,318 psi | 60% | 2385 fps | 95.2% |
| Ramshot Hunter | <<locked>> | 80% | 41,510 psi | 67% | 2408 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 33,272 psi | 53% | 2280 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,398 psi | 46% | 1450 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,749 psi | 81% | 2569 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,120 psi | 69% | 2441 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,437 psi | 66% | 2454 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 30,980 psi | 50% | 2287 fps | 95.3% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 42,192 psi | 68% | 2536 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 50,459 psi | 81% | 2477 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 37,768 psi | 61% | 2293 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 35,462 psi | 57% | 2290 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 46,427 psi | 74% | 2421 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,527 psi | 73% | 2405 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 43,787 psi | 70% | 2395 fps | 99.2% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,619 psi | 83% | 2530 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,705 psi | 81% | 2362 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,425 psi | 71% | 2356 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,157 psi | 56% | 2283 fps | 95.7% |
| Somchem S355 | <<locked>> | 80% | 50,444 psi | 81% | 2474 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 40,886 psi | 66% | 2333 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 39,595 psi | 63% | 2375 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,187 psi | 58% | 2280 fps | 96.9% |
| Vihtavuori N150 | <<locked>> | 80% | 48,211 psi | 77% | 2405 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,193 psi | 71% | 2408 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 33,417 psi | 54% | 2218 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 43,497 psi | 70% | 2411 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 34,766 psi | 56% | 2293 fps | 99.5% |
| Vihtavuori N560 | 62.6 gr | 86% | 41,524 psi | 67% | 2467 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 38,348 psi | 61% | 2398 fps | 95% |
| Vihtavuori N568 | <<locked>> | 98% | 43,845 psi | 70% | 2549 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,960 psi | 69% | 2372 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,237 psi | 73% | 2467 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 27,456 psi | 44% | 2238 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,244 psi | 57% | 2260 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 78 powders for .300 Win. Mag. loaded with the .308 | 220gr | Lapua ScenarL. Alliant Reloder-26 delivers the highest muzzle velocity at 2,730 fps; across all powders the maximum-charge window runs from 1,585 fps to 2,730 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 220.0 gr projectile in 0.308" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-25 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. Vihtavuori N560, Norma MRP, Accurate MAGPRO rank at the top here: for .300 Win. Mag. with the .308 | 220gr | Lapua ScenarL 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.