Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 240gr | Woodleigh PP SN bullet and 49 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and Vihtavuori N570.
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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 86% | 51,692 psi | 85% | 2530 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 53,896 psi | 88% | 2684 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 84% | 53,040 psi | 87% | 2605 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 54,868 psi | 90% | 2677 fps | 100% |
| ADI AR 2217 | <<locked>> | 96% | 53,229 psi | 87% | 2657 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 52,953 psi | 87% | 2772 fps | 99% |
| ADI AR 2225 | <<locked>> | 98% | 51,547 psi | 85% | 2677 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 52,808 psi | 87% | 2602 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 86% | 51,735 psi | 85% | 2621 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 88% | 53,505 psi | 88% | 2582 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 92% | 53,345 psi | 88% | 2651 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 84% | 53,664 psi | 88% | 2664 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 54,230 psi | 89% | 2753 fps | 99% |
| Alliant Reloder-50ᴾ | <<locked>> | 100% | 49,559 psi | 81% | 2677 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 51,982 psi | 85% | 2592 fps | 98.6% |
| Bofors RP15 | <<locked>> | 90% | 54,534 psi | 90% | 2661 fps | 100% |
| Bofors RP30 | <<locked>> | 94% | 53,113 psi | 87% | 2671 fps | 100% |
| Bofors RP5 | <<locked>> | 86% | 51,735 psi | 85% | 2621 fps | 100% |
| Hodgdon H1000 | <<locked>> | 94% | 54,534 psi | 90% | 2674 fps | 100% |
| Hodgdon H4831 | <<locked>> | 86% | 54,201 psi | 89% | 2615 fps | 99.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 53,142 psi | 87% | 2598 fps | 99.8% |
| Hodgdon Hybrid 100V | <<locked>> | 82% | 53,635 psi | 88% | 2516 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 92% | 52,272 psi | 86% | 2733 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,782 psi | 62% | 1624 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 54,650 psi | 90% | 2592 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 88% | 53,243 psi | 87% | 2661 fps | 100% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 50,589 psi | 83% | 2661 fps | 100% |
| Lovex S071 | <<locked>> | 92% | 53,548 psi | 88% | 2556 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 51,648 psi | 85% | 2680 fps | 100% |
| Norma MRP | <<locked>> | 84% | 51,605 psi | 85% | 2635 fps | 100% |
| Ramshot Grand | <<locked>> | 88% | 54,085 psi | 89% | 2680 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 52,402 psi | 86% | 2615 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,696 psi | 64% | 1663 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 52,373 psi | 86% | 2723 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 51,750 psi | 85% | 2697 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 84% | 53,809 psi | 88% | 2579 fps | 100% |
| Rottweil R 905 | <<locked>> | 84% | 52,388 psi | 86% | 2589 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 52,011 psi | 85% | 2585 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 54,810 psi | 90% | 2575 fps | 99.8% |
| Somchem S385 | <<locked>> | 84% | 52,736 psi | 87% | 2562 fps | 100% |
| Vihtavuori N165 | <<locked>> | 88% | 52,576 psi | 86% | 2552 fps | 100% |
| Vihtavuori N170 | <<locked>> | 94% | 54,853 psi | 90% | 2631 fps | 97.7% |
| Vihtavuori N555 | <<locked>> | 84% | 52,098 psi | 86% | 2559 fps | 100% |
| Vihtavuori N560 | <<locked>> | 86% | 54,723 psi | 90% | 2690 fps | 99.9% |
| Vihtavuori N565 | <<locked>> | 90% | 51,909 psi | 85% | 2635 fps | 99.9% |
| Vihtavuori N568 | <<locked>> | 94% | 52,678 psi | 86% | 2697 fps | 99.6% |
| Vihtavuori N570 | <<locked>> | 96% | 53,693 psi | 88% | 2756 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 88% | 52,823 psi | 87% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 52,388 psi | 86% | 2562 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 42,395 psi | 70% | 2385 fps | 100% |
| Accurate MAGPRO | <<locked>> | 80% | 43,787 psi | 72% | 2516 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 80% | 46,499 psi | 76% | 2507 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 80% | 41,771 psi | 69% | 2461 fps | 98.9% |
| ADI AR 2217 | <<locked>> | 80% | 31,125 psi | 51% | 2231 fps | 96% |
| ADI AR 2218 | <<locked>> | 92% | 39,813 psi | 65% | 2513 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 80% | 28,485 psi | 47% | 2211 fps | 98% |
| Alliant Reloder-19 | <<locked>> | 80% | 46,311 psi | 76% | 2497 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 80% | 42,482 psi | 70% | 2467 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 41,263 psi | 68% | 2402 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 35,650 psi | 59% | 2359 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 46,296 psi | 76% | 2559 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 90% | 40,466 psi | 66% | 2510 fps | 95.9% |
| Alliant Reloder-50 | <<locked>> | 94% | 39,740 psi | 65% | 2497 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 80% | 40,553 psi | 67% | 2385 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 39,508 psi | 65% | 2408 fps | 99.2% |
| Bofors RP30 | <<locked>> | 80% | 33,112 psi | 54% | 2300 fps | 97.1% |
| Bofors RP5 | <<locked>> | 80% | 42,482 psi | 70% | 2467 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 80% | 33,808 psi | 56% | 2300 fps | 97.7% |
| Hodgdon H4831 | <<locked>> | 80% | 44,280 psi | 73% | 2457 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 80% | 43,584 psi | 72% | 2444 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 50,357 psi | 83% | 2474 fps | 100% |
| Hodgdon Retumbo | 66.8 gr | 80% | 34,809 psi | 57% | 2402 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,384 psi | 47% | 1450 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 45,440 psi | 75% | 2444 fps | 99.1% |
| IMR 7828 SSC | <<locked>> | 80% | 40,451 psi | 66% | 2444 fps | 98.7% |
| IMR 8133 Enduron | <<locked>> | 84% | 29,689 psi | 49% | 2241 fps | 95.4% |
| Lovex S071 | <<locked>> | 80% | 36,666 psi | 60% | 2280 fps | 99.9% |
| Norma 217 | <<locked>> | 80% | 26,136 psi | 43% | 2159 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 44,875 psi | 74% | 2526 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 40,524 psi | 67% | 2457 fps | 99% |
| Ramshot Magnum | <<locked>> | 80% | 36,216 psi | 59% | 2346 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 29,095 psi | 48% | 1486 fps | 100% |
| ReloadSwiss RS 76 | 71.5 gr | 80% | 33,837 psi | 56% | 2382 fps | 99.6% |
| ReloadSwiss RS 80 | <<locked>> | 82% | 33,141 psi | 54% | 2339 fps | 95.5% |
| Rottweil R 904 | <<locked>> | 80% | 47,355 psi | 78% | 2477 fps | 99.6% |
| Rottweil R 905 | <<locked>> | 80% | 45,948 psi | 75% | 2490 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 45,614 psi | 75% | 2487 fps | 99.9% |
| Somchem S361 | <<locked>> | 80% | 48,182 psi | 79% | 2474 fps | 99.3% |
| Somchem S385 | <<locked>> | 80% | 46,470 psi | 76% | 2467 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 40,480 psi | 66% | 2359 fps | 99.6% |
| Vihtavuori N170 | <<locked>> | 88% | 44,991 psi | 74% | 2470 fps | 95.4% |
| Vihtavuori N555 | <<locked>> | 80% | 45,759 psi | 75% | 2467 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 44,614 psi | 73% | 2526 fps | 99% |
| Vihtavuori N565 | <<locked>> | 80% | 37,043 psi | 61% | 2365 fps | 97.6% |
| Vihtavuori N568 | <<locked>> | 82% | 34,505 psi | 57% | 2356 fps | 95.4% |
| Vihtavuori N570 | 76.3 gr | 88% | 40,553 psi | 67% | 2520 fps | 95.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 39,131 psi | 64% | 2464 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 42,757 psi | 70% | 2411 fps | 99.6% |
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 49 powders for .300 Lapua Mag. loaded with the .308 | 240gr | Woodleigh PP SN. ADI AR 2218 delivers the highest muzzle velocity at 2,772 fps; across all powders the maximum-charge window runs from 1,624 fps to 2,772 fps. ADI AR 2218 gives the best case fill at 100 %, and 49 of the 49 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 240.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2218, Alliant Reloder-50, Hodgdon TrailBoss 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. Hodgdon Retumbo, ReloadSwiss RS 76, Vihtavuori N570 rank at the top here: for .300 Lapua Mag. with the .308 | 240gr | Woodleigh PP SN 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.