Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 225gr | CutEdge LZR MAX GEN2 bullet and 72 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 Accurate High Country.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 92% | 54,940 psi | 90% | 2654 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,504 psi | 86% | 2621 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 53,084 psi | 87% | 2753 fps | 99.8% |
| Accurate MAGPRO | <<locked>> | 90% | 53,809 psi | 88% | 2759 fps | 99.3% |
| ADI AR 2209 | <<locked>> | 88% | 53,635 psi | 88% | 2690 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 55,027 psi | 90% | 2756 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,939 psi | 87% | 2726 fps | 99.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 47,340 psi | 78% | 2694 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 53,911 psi | 89% | 2690 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,041 psi | 89% | 2677 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 53,301 psi | 88% | 2684 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 51,619 psi | 85% | 2697 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,968 psi | 87% | 2661 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 52,518 psi | 86% | 2726 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 53,098 psi | 87% | 2746 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 49,095 psi | 81% | 2746 fps | 97.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,968 psi | 87% | 2671 fps | 97.9% |
| Bofors RP15 | <<locked>> | 94% | 54,389 psi | 89% | 2736 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 52,127 psi | 86% | 2740 fps | 99.9% |
| Bofors RP5 | <<locked>> | 90% | 51,619 psi | 85% | 2697 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,621 psi | 90% | 2625 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 54,447 psi | 89% | 2746 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 54,259 psi | 89% | 2677 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,868 psi | 90% | 2694 fps | 99.5% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,708 psi | 88% | 2677 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,143 psi | 89% | 2605 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 55,100 psi | 90% | 2858 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 54,679 psi | 90% | 2717 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,246 psi | 61% | 1650 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 53,011 psi | 87% | 2615 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 53,142 psi | 87% | 2618 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 52,344 psi | 86% | 2625 fps | 99.3% |
| IMR 7828 SSC | <<locked>> | 92% | 53,084 psi | 87% | 2736 fps | 99.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,699 psi | 70% | 2605 fps | 98.7% |
| Lovex S065 | <<locked>> | 82% | 53,359 psi | 88% | 2592 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 51,677 psi | 85% | 2595 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,663 psi | 86% | 2621 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,969 psi | 89% | 2674 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 42,931 psi | 70% | 2628 fps | 99.9% |
| Norma MRP | <<locked>> | 90% | 55,013 psi | 90% | 2766 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,795 psi | 90% | 2657 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,693 psi | 88% | 2756 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 53,664 psi | 88% | 2671 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,924 psi | 85% | 2690 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,072 psi | 63% | 1690 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,634 psi | 86% | 2648 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,824 psi | 90% | 2726 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 51,416 psi | 84% | 2792 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 54,462 psi | 89% | 2818 fps | 99.5% |
| Rottweil R 904 | <<locked>> | 88% | 54,679 psi | 90% | 2664 fps | 99.8% |
| Rottweil R 905 | <<locked>> | 88% | 52,649 psi | 86% | 2667 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 54,621 psi | 90% | 2625 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 53,359 psi | 88% | 2592 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 51,677 psi | 85% | 2595 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,214 psi | 86% | 2549 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 52,257 psi | 86% | 2667 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 52,272 psi | 86% | 2605 fps | 99.2% |
| Somchem S365 | <<locked>> | 84% | 51,808 psi | 85% | 2612 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 53,011 psi | 87% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,852 psi | 87% | 2598 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,692 psi | 87% | 2628 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 54,694 psi | 90% | 2697 fps | 96.6% |
| Vihtavuori N550 | <<locked>> | 82% | 51,982 psi | 85% | 2605 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,955 psi | 90% | 2684 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,766 psi | 90% | 2769 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 96% | 54,636 psi | 90% | 2753 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 51,576 psi | 85% | 2759 fps | 98.9% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 52,518 psi | 86% | 2815 fps | 97.6% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 52,011 psi | 85% | 2559 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,491 psi | 89% | 2680 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 55,042 psi | 90% | 2792 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,866 psi | 87% | 2641 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% | 36,492 psi | 60% | 2352 fps | 99.5% |
| Accurate 4350 | <<locked>> | 80% | 48,950 psi | 80% | 2572 fps | 100% |
| Accurate High Country | 66 gr | 80% | 40,045 psi | 66% | 2523 fps | 97.9% |
| Accurate MAGPRO | <<locked>> | 80% | 37,637 psi | 62% | 2464 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 40,973 psi | 67% | 2477 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 80% | 36,419 psi | 60% | 2418 fps | 96.5% |
| ADI AR 2217 | <<locked>> | 86% | 32,909 psi | 54% | 2336 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 82% | 26,078 psi | 43% | 2195 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 41,263 psi | 68% | 2477 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 47,311 psi | 78% | 2579 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,886 psi | 67% | 2470 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,666 psi | 60% | 2425 fps | 98% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,505 psi | 58% | 2379 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,574 psi | 50% | 2313 fps | 99% |
| Alliant Reloder-26 | <<locked>> | 80% | 39,204 psi | 64% | 2523 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 42,337 psi | 70% | 2621 fps | 95.3% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 43,932 psi | 72% | 2510 fps | 95.7% |
| Bofors RP15 | <<locked>> | 80% | 34,069 psi | 56% | 2362 fps | 97% |
| Bofors RP30 | <<locked>> | 84% | 32,082 psi | 53% | 2349 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 36,666 psi | 60% | 2425 fps | 98% |
| Bofors RP7 | <<locked>> | 80% | 51,387 psi | 84% | 2575 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 31,285 psi | 51% | 2297 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 50,807 psi | 83% | 2628 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,870 psi | 64% | 2418 fps | 96.7% |
| Hodgdon H4831 SC | <<locked>> | 80% | 38,203 psi | 63% | 2405 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 44,469 psi | 73% | 2467 fps | 100% |
| Hodgdon Retumbo | 63.6 gr | 80% | 29,863 psi | 49% | 2336 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 50,705 psi | 83% | 2661 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 46% | 1473 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,775 psi | 77% | 2520 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 46,528 psi | 76% | 2523 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,567 psi | 67% | 2421 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 80% | 35,099 psi | 58% | 2398 fps | 96.2% |
| IMR 8133 Enduron | <<locked>> | 92% | 32,561 psi | 53% | 2385 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 50,270 psi | 83% | 2546 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,428 psi | 80% | 2543 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 31,401 psi | 52% | 2241 fps | 98.5% |
| Norma 204 | <<locked>> | 80% | 47,007 psi | 77% | 2566 fps | 99.5% |
| Norma 217 | <<locked>> | 86% | 26,585 psi | 44% | 2241 fps | 95% |
| Norma MRP | <<locked>> | 80% | 38,595 psi | 63% | 2490 fps | 99.4% |
| Norma URP | <<locked>> | 80% | 47,950 psi | 79% | 2559 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,577 psi | 57% | 2402 fps | 96.4% |
| Ramshot Hunter | <<locked>> | 80% | 46,891 psi | 77% | 2566 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,690 psi | 50% | 2290 fps | 96.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,572 psi | 47% | 1509 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 49,226 psi | 81% | 2598 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 47,572 psi | 78% | 2621 fps | 100% |
| ReloadSwiss RS 76 | 68 gr | 80% | 28,660 psi | 47% | 2303 fps | 96.7% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 37,217 psi | 61% | 2507 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 42,119 psi | 69% | 2454 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 80% | 40,205 psi | 66% | 2457 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 80% | 51,387 psi | 84% | 2575 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,270 psi | 83% | 2546 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,428 psi | 80% | 2543 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,110 psi | 81% | 2503 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,871 psi | 65% | 2454 fps | 98.7% |
| Somchem S361 | <<locked>> | 80% | 42,859 psi | 70% | 2448 fps | 97.6% |
| Somchem S365 | <<locked>> | 80% | 45,310 psi | 74% | 2516 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,683 psi | 67% | 2438 fps | 99.3% |
| Vihtavuori N160 | <<locked>> | 80% | 49,458 psi | 81% | 2552 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,302 psi | 58% | 2326 fps | 98% |
| Vihtavuori N170 | <<locked>> | 96% | 51,213 psi | 84% | 2641 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 48,718 psi | 80% | 2559 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,610 psi | 65% | 2444 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,682 psi | 64% | 2484 fps | 96.9% |
| Vihtavuori N565 | <<locked>> | 82% | 33,837 psi | 56% | 2365 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 90% | 38,725 psi | 64% | 2523 fps | 95.8% |
| Vihtavuori N570 | <<locked>> | 96% | 45,469 psi | 75% | 2690 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,501 psi | 80% | 2510 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,807 psi | 83% | 2628 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,894 psi | 52% | 2418 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,289 psi | 61% | 2375 fps | 98% |
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 72 powders for .300 Lapua Mag. loaded with the .308 | 225gr | CutEdge LZR MAX GEN2. Hodgdon Retumbo delivers the highest muzzle velocity at 2,858 fps; across all powders the maximum-charge window runs from 1,650 fps to 2,858 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 225.0 gr projectile in 0.308" calls for a 1:9.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, 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, Accurate High Country rank at the top here: for .300 Lapua Mag. with the .308 | 225gr | CutEdge LZR MAX GEN2 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.