Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 225gr | Cutting Edge Maximus FCG bullet and 71 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.
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% | 54,418 psi | 89% | 2641 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 51,851 psi | 85% | 2612 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 52,315 psi | 86% | 2740 fps | 99.7% |
| Accurate MAGPRO | <<locked>> | 90% | 53,069 psi | 87% | 2743 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 88% | 53,098 psi | 87% | 2680 fps | 100% |
| ADI AR 2213 | <<locked>> | 92% | 54,317 psi | 89% | 2743 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 52,301 psi | 86% | 2713 fps | 99.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,557 psi | 76% | 2677 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 84% | 53,388 psi | 88% | 2667 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 52,533 psi | 86% | 2667 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 92% | 54,433 psi | 89% | 2736 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 52,402 psi | 86% | 2651 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 51,793 psi | 85% | 2713 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 52,315 psi | 86% | 2733 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 48,501 psi | 80% | 2730 fps | 97% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 52,460 psi | 86% | 2657 fps | 97.7% |
| Bofors RP15 | <<locked>> | 94% | 53,650 psi | 88% | 2723 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,882 psi | 90% | 2776 fps | 100% |
| Bofors RP5 | <<locked>> | 92% | 54,433 psi | 89% | 2736 fps | 100% |
| Bofors RP7 | <<locked>> | 82% | 54,273 psi | 89% | 2615 fps | 100% |
| Hodgdon H1000 | <<locked>> | 98% | 53,795 psi | 88% | 2733 fps | 100% |
| Hodgdon H414 | <<locked>> | 82% | 53,679 psi | 88% | 2667 fps | 100% |
| Hodgdon H4831 | <<locked>> | 90% | 54,143 psi | 89% | 2680 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 90% | 53,229 psi | 87% | 2667 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 53,534 psi | 88% | 2592 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 54,360 psi | 89% | 2844 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 53,911 psi | 89% | 2703 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,347 psi | 61% | 1647 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 52,475 psi | 86% | 2605 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 52,576 psi | 86% | 2608 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 51,895 psi | 85% | 2615 fps | 99.2% |
| IMR 7828 SSC | <<locked>> | 92% | 52,533 psi | 86% | 2723 fps | 99.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,061 psi | 69% | 2592 fps | 98.6% |
| Lovex S065 | <<locked>> | 82% | 52,823 psi | 87% | 2582 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,549 psi | 90% | 2631 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 52,141 psi | 86% | 2612 fps | 100% |
| Norma 204 | <<locked>> | 84% | 53,200 psi | 87% | 2657 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 42,264 psi | 69% | 2615 fps | 99.8% |
| Norma MRP | <<locked>> | 90% | 54,491 psi | 89% | 2756 fps | 100% |
| Norma URP | <<locked>> | 84% | 54,215 psi | 89% | 2648 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 53,156 psi | 87% | 2743 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 84% | 52,910 psi | 87% | 2657 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 51,227 psi | 84% | 2677 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,189 psi | 63% | 1686 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 52,054 psi | 85% | 2635 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 54,273 psi | 89% | 2717 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 54,766 psi | 90% | 2841 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 53,809 psi | 88% | 2805 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 88% | 54,172 psi | 89% | 2651 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 52,069 psi | 85% | 2657 fps | 100% |
| Rottweil R 907 | <<locked>> | 82% | 54,273 psi | 89% | 2615 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,823 psi | 87% | 2582 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,549 psi | 90% | 2631 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 51,924 psi | 85% | 2543 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 51,663 psi | 85% | 2654 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 51,866 psi | 85% | 2595 fps | 99.1% |
| Somchem S365 | <<locked>> | 86% | 54,810 psi | 90% | 2648 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,475 psi | 86% | 2631 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 52,272 psi | 86% | 2589 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 52,214 psi | 86% | 2618 fps | 100% |
| Vihtavuori N170 | <<locked>> | 98% | 54,157 psi | 89% | 2680 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 84% | 54,868 psi | 90% | 2644 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,360 psi | 89% | 2674 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 54,288 psi | 89% | 2756 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 96% | 53,940 psi | 89% | 2740 fps | 99.7% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 54,621 psi | 90% | 2802 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 51,634 psi | 85% | 2799 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 51,517 psi | 85% | 2549 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,896 psi | 88% | 2671 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 54,172 psi | 89% | 2782 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,170 psi | 86% | 2628 fps | 99.9% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 36,143 psi | 59% | 2343 fps | 99.4% |
| Accurate 4350 | <<locked>> | 80% | 48,559 psi | 80% | 2562 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 39,494 psi | 65% | 2510 fps | 97.7% |
| Accurate MAGPRO | <<locked>> | 80% | 37,130 psi | 61% | 2451 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 40,422 psi | 66% | 2464 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 80% | 36,114 psi | 59% | 2405 fps | 96.3% |
| ADI AR 2217 | <<locked>> | 86% | 32,518 psi | 53% | 2323 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 84% | 27,499 psi | 45% | 2238 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,688 psi | 77% | 2569 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,553 psi | 67% | 2461 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,332 psi | 60% | 2415 fps | 97.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,954 psi | 57% | 2365 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 30,153 psi | 50% | 2300 fps | 98.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,638 psi | 63% | 2510 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 96% | 41,814 psi | 69% | 2605 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 86% | 43,424 psi | 71% | 2497 fps | 95.5% |
| Bofors RP15 | <<locked>> | 80% | 33,721 psi | 55% | 2352 fps | 96.8% |
| Bofors RP30 | <<locked>> | 84% | 31,633 psi | 52% | 2336 fps | 95.3% |
| Bofors RP5 | <<locked>> | 80% | 36,332 psi | 60% | 2415 fps | 97.8% |
| Bofors RP7 | <<locked>> | 80% | 50,836 psi | 83% | 2566 fps | 100% |
| Hodgdon H1000 | <<locked>> | 82% | 31,024 psi | 51% | 2287 fps | 95.1% |
| Hodgdon H414 | <<locked>> | 80% | 50,241 psi | 82% | 2615 fps | 100% |
| Hodgdon H4831 | <<locked>> | 80% | 38,537 psi | 63% | 2408 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 80% | 37,898 psi | 62% | 2398 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,859 psi | 72% | 2454 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 80% | 29,443 psi | 48% | 2320 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 50,140 psi | 82% | 2648 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 46% | 1470 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,253 psi | 76% | 2507 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 46,151 psi | 76% | 2513 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 40,103 psi | 66% | 2408 fps | 97.1% |
| IMR 7828 SSC | <<locked>> | 80% | 34,650 psi | 57% | 2385 fps | 95.9% |
| IMR 8133 Enduron | <<locked>> | 92% | 32,155 psi | 53% | 2372 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 49,690 psi | 82% | 2536 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,066 psi | 79% | 2533 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 31,067 psi | 51% | 2231 fps | 98.3% |
| Norma 204 | <<locked>> | 80% | 46,499 psi | 76% | 2552 fps | 99.4% |
| Norma 217 | <<locked>> | 88% | 28,108 psi | 46% | 2283 fps | 95.9% |
| Norma MRP | <<locked>> | 80% | 38,058 psi | 62% | 2477 fps | 99.2% |
| Norma URP | <<locked>> | 80% | 47,572 psi | 78% | 2549 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 34,272 psi | 56% | 2392 fps | 96.2% |
| Ramshot Hunter | <<locked>> | 80% | 46,369 psi | 76% | 2556 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 30,269 psi | 50% | 2277 fps | 96.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,572 psi | 47% | 1506 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,646 psi | 80% | 2585 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,978 psi | 77% | 2612 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 80% | 28,297 psi | 46% | 2290 fps | 96.4% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 36,695 psi | 60% | 2493 fps | 95.7% |
| Rottweil R 904 | <<locked>> | 80% | 41,771 psi | 69% | 2444 fps | 98% |
| Rottweil R 905 | <<locked>> | 80% | 39,856 psi | 65% | 2448 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 80% | 50,836 psi | 83% | 2566 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,690 psi | 82% | 2536 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,066 psi | 79% | 2533 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,573 psi | 80% | 2493 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,523 psi | 65% | 2444 fps | 98.6% |
| Somchem S361 | <<locked>> | 80% | 42,424 psi | 70% | 2434 fps | 97.5% |
| Somchem S365 | <<locked>> | 80% | 44,672 psi | 73% | 2507 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,335 psi | 66% | 2428 fps | 99.2% |
| Vihtavuori N160 | <<locked>> | 80% | 49,052 psi | 81% | 2543 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 34,983 psi | 57% | 2316 fps | 97.8% |
| Vihtavuori N170 | <<locked>> | 96% | 50,618 psi | 83% | 2628 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 48,153 psi | 79% | 2546 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,204 psi | 64% | 2434 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 38,174 psi | 63% | 2467 fps | 96.6% |
| Vihtavuori N565 | <<locked>> | 82% | 33,373 psi | 55% | 2352 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 90% | 38,130 psi | 63% | 2507 fps | 95.5% |
| Vihtavuori N570 | <<locked>> | 96% | 44,846 psi | 74% | 2677 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 48,008 psi | 79% | 2500 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,430 psi | 83% | 2618 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 31,314 psi | 51% | 2405 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 36,825 psi | 60% | 2362 fps | 97.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 71 powders for .300 Lapua Mag. loaded with the .308 | 225gr | Cutting Edge Maximus FCG. Hodgdon Retumbo delivers the highest muzzle velocity at 2,844 fps; across all powders the maximum-charge window runs from 1,647 fps to 2,844 fps. ADI AR 2217 gives the best case fill at 100 %, and 71 of the 71 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 1:9.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.