Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 220gr | Nosler Partition bullet and 59 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 ReloadSwiss RS 80.
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>> | 88% | 52,083 psi | 86% | 2648 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 54,998 psi | 90% | 2808 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 86% | 53,548 psi | 88% | 2730 fps | 100% |
| ADI AR 2213 | <<locked>> | 88% | 51,561 psi | 85% | 2743 fps | 99.6% |
| ADI AR 2217 | <<locked>> | 98% | 53,316 psi | 88% | 2769 fps | 99.9% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 49,342 psi | 81% | 2805 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 51,416 psi | 84% | 2792 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 53,882 psi | 88% | 2713 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 53,229 psi | 87% | 2720 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 88% | 52,025 psi | 85% | 2740 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 90% | 53,577 psi | 88% | 2703 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 94% | 53,229 psi | 87% | 2772 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 53,722 psi | 88% | 2785 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 54,056 psi | 89% | 2861 fps | 98.3% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 52,678 psi | 86% | 2707 fps | 98% |
| Bofors RP15 | <<locked>> | 92% | 54,795 psi | 90% | 2779 fps | 100% |
| Bofors RP30 | <<locked>> | 96% | 52,939 psi | 87% | 2785 fps | 99.9% |
| Bofors RP5 | <<locked>> | 88% | 52,025 psi | 85% | 2740 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,839 psi | 90% | 2792 fps | 100% |
| Hodgdon H4831 | <<locked>> | 92% | 54,346 psi | 89% | 2730 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 53,708 psi | 88% | 2717 fps | 99.5% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 54,085 psi | 89% | 2641 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 94% | 52,025 psi | 85% | 2848 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,521 psi | 62% | 1696 fps | 100% |
| IMR 4350 | <<locked>> | 82% | 52,721 psi | 87% | 2651 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 54,679 psi | 90% | 2674 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 86% | 52,112 psi | 86% | 2661 fps | 99.4% |
| IMR 7828 SSC | <<locked>> | 88% | 53,490 psi | 88% | 2779 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 46,949 psi | 77% | 2713 fps | 99.4% |
| Lovex S070 | <<locked>> | 82% | 54,998 psi | 90% | 2680 fps | 100% |
| Lovex S071 | <<locked>> | 94% | 53,563 psi | 88% | 2671 fps | 100% |
| Norma 204 | <<locked>> | 82% | 53,679 psi | 88% | 2710 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 47,674 psi | 78% | 2736 fps | 100% |
| Norma MRP | <<locked>> | 86% | 51,735 psi | 85% | 2753 fps | 100% |
| Norma URP | <<locked>> | 82% | 54,752 psi | 90% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 53,142 psi | 87% | 2785 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 53,621 psi | 88% | 2707 fps | 100% |
| Ramshot Magnum | <<locked>> | 90% | 54,273 psi | 89% | 2759 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,551 psi | 63% | 1739 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 54,868 psi | 90% | 2762 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 52,243 psi | 86% | 2841 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 51,488 psi | 85% | 2802 fps | 99.3% |
| Rottweil R 904 | <<locked>> | 86% | 54,447 psi | 89% | 2700 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 86% | 52,750 psi | 87% | 2710 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 54,998 psi | 90% | 2680 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 52,373 psi | 86% | 2707 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 52,083 psi | 86% | 2641 fps | 99.3% |
| Somchem S365 | <<locked>> | 82% | 52,083 psi | 86% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 86% | 53,287 psi | 87% | 2684 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 54,056 psi | 89% | 2582 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,694 psi | 90% | 2694 fps | 100% |
| Vihtavuori N170ᴾ | <<locked>> | 100% | 52,881 psi | 87% | 2707 fps | 96.4% |
| Vihtavuori N555 | <<locked>> | 86% | 52,301 psi | 86% | 2680 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 52,315 psi | 86% | 2769 fps | 99.5% |
| Vihtavuori N565 | <<locked>> | 92% | 51,866 psi | 85% | 2746 fps | 99.6% |
| Vihtavuori N568 | <<locked>> | 96% | 52,489 psi | 86% | 2805 fps | 99% |
| Vihtavuori N570 | <<locked>> | 98% | 53,838 psi | 88% | 2867 fps | 97.9% |
| Winchester StaBALL HD | <<locked>> | 90% | 52,286 psi | 86% | 2785 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 86% | 53,969 psi | 89% | 2697 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% | 39,842 psi | 65% | 2444 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 80% | 38,870 psi | 64% | 2513 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 43,918 psi | 72% | 2569 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 80% | 39,291 psi | 65% | 2513 fps | 97.5% |
| ADI AR 2217 | <<locked>> | 84% | 33,373 psi | 55% | 2379 fps | 95.8% |
| ADI AR 2218 | <<locked>> | 96% | 42,946 psi | 71% | 2674 fps | 95% |
| ADI AR 2225 | <<locked>> | 80% | 26,731 psi | 44% | 2241 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 50,546 psi | 83% | 2664 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 43,787 psi | 72% | 2562 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 39,856 psi | 65% | 2520 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 38,667 psi | 63% | 2467 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 33,344 psi | 55% | 2408 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 43,091 psi | 71% | 2621 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 43,294 psi | 71% | 2671 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 43,642 psi | 72% | 2543 fps | 95.8% |
| Bofors RP15 | <<locked>> | 80% | 37,086 psi | 61% | 2461 fps | 98% |
| Bofors RP30 | <<locked>> | 80% | 30,748 psi | 50% | 2339 fps | 95% |
| Bofors RP5 | <<locked>> | 80% | 39,856 psi | 65% | 2520 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 82% | 32,140 psi | 53% | 2349 fps | 95.9% |
| Hodgdon H4831 | <<locked>> | 80% | 36,941 psi | 61% | 2408 fps | 96.1% |
| Hodgdon H4831 SC | <<locked>> | 80% | 41,147 psi | 68% | 2497 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 47,674 psi | 78% | 2549 fps | 100% |
| Hodgdon Retumbo | 67.6 gr | 80% | 32,547 psi | 53% | 2441 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,268 psi | 46% | 1516 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 49,661 psi | 82% | 2605 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 45,426 psi | 75% | 2536 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 43,207 psi | 71% | 2507 fps | 98% |
| IMR 7828 SSC | <<locked>> | 80% | 40,451 psi | 66% | 2549 fps | 97.9% |
| IMR 8133 Enduron | <<locked>> | 88% | 31,589 psi | 52% | 2385 fps | 95.2% |
| Lovex S070 | <<locked>> | 80% | 51,605 psi | 85% | 2631 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 34,505 psi | 57% | 2336 fps | 99.2% |
| Norma 204 | <<locked>> | 80% | 50,096 psi | 82% | 2654 fps | 99.8% |
| Norma 217 | <<locked>> | 84% | 27,673 psi | 45% | 2293 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 42,061 psi | 69% | 2585 fps | 99.8% |
| Norma URP | <<locked>> | 80% | 51,271 psi | 84% | 2644 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 42,395 psi | 70% | 2602 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 80% | 50,053 psi | 82% | 2654 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 36,970 psi | 61% | 2464 fps | 98.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,921 psi | 47% | 1552 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 51,068 psi | 84% | 2710 fps | 100% |
| ReloadSwiss RS 76 | 72.4 gr | 80% | 31,575 psi | 52% | 2418 fps | 98.2% |
| ReloadSwiss RS 80 | 78.4 gr | 86% | 35,462 psi | 58% | 2493 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 44,976 psi | 74% | 2543 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 80% | 43,352 psi | 71% | 2549 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 51,605 psi | 85% | 2631 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 43,004 psi | 71% | 2546 fps | 99.3% |
| Somchem S361 | <<locked>> | 80% | 45,643 psi | 75% | 2533 fps | 98.3% |
| Somchem S365 | <<locked>> | 80% | 48,892 psi | 80% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 43,888 psi | 72% | 2530 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 80% | 50,821 psi | 83% | 2539 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 37,115 psi | 61% | 2392 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 98% | 49,748 psi | 82% | 2654 fps | 95.6% |
| Vihtavuori N555 | <<locked>> | 80% | 43,033 psi | 71% | 2536 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,900 psi | 66% | 2539 fps | 97.3% |
| Vihtavuori N565 | <<locked>> | 80% | 34,679 psi | 57% | 2411 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 86% | 36,912 psi | 61% | 2510 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 92% | 43,497 psi | 71% | 2680 fps | 95.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 35,679 psi | 59% | 2516 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 43,772 psi | 72% | 2530 fps | 99.3% |
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 59 powders for .300 Lapua Mag. loaded with the .308 | 220gr | Nosler Partition. Vihtavuori N570 delivers the highest muzzle velocity at 2,867 fps; across all powders the maximum-charge window runs from 1,696 fps to 2,867 fps. ADI AR 2218 gives the best case fill at 100 %, and 59 of the 59 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 220.0 gr projectile in 0.308" calls for a 1:13.0 twist; slower twists will usually not stabilise this weight. ADI AR 2218, ADI AR 2225, Alliant Reloder-33 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, ReloadSwiss RS 80 rank at the top here: for .300 Lapua Mag. with the .308 | 220gr | Nosler Partition 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.