Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 206gr | Peregrine Glider GRM bullet and 72 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.
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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 53,882 psi | 88% | 2749 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 51,822 psi | 85% | 2730 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 51,750 psi | 85% | 2844 fps | 99.2% |
| Accurate MAGPRO | <<locked>> | 92% | 52,663 psi | 86% | 2851 fps | 98.5% |
| ADI AR 2209 | <<locked>> | 90% | 52,881 psi | 87% | 2789 fps | 99.7% |
| ADI AR 2213 | <<locked>> | 94% | 54,128 psi | 89% | 2851 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,254 psi | 79% | 2753 fps | 98.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,873 psi | 70% | 2717 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,156 psi | 87% | 2785 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,824 psi | 88% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,489 psi | 86% | 2779 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,012 psi | 89% | 2844 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 51,677 psi | 85% | 2762 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,505 psi | 89% | 2874 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,358 psi | 84% | 2841 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,605 psi | 86% | 2759 fps | 96.7% |
| Bofors RP15 | <<locked>> | 96% | 52,982 psi | 87% | 2828 fps | 99.7% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,343 psi | 83% | 2822 fps | 99.3% |
| Bofors RP5 | <<locked>> | 94% | 54,012 psi | 89% | 2844 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 54,389 psi | 89% | 2730 fps | 100% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,490 psi | 88% | 2838 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 84% | 53,751 psi | 88% | 2785 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,953 psi | 87% | 2743 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 92% | 54,114 psi | 89% | 2789 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,982 psi | 87% | 2772 fps | 98.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,156 psi | 87% | 2707 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,316 psi | 88% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,867 psi | 88% | 2822 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 61% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,794 psi | 87% | 2723 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,605 psi | 86% | 2703 fps | 100% |
| IMR 4831 | <<locked>> | 86% | 52,388 psi | 86% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 51,909 psi | 85% | 2720 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 51,982 psi | 85% | 2828 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 38,406 psi | 63% | 2621 fps | 96.6% |
| Lovex S065 | <<locked>> | 84% | 53,026 psi | 87% | 2700 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,650 psi | 90% | 2749 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,853 psi | 90% | 2766 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,345 psi | 88% | 2772 fps | 99.6% |
| Norma 217ᴾ | <<locked>> | 100% | 38,392 psi | 63% | 2644 fps | 98.7% |
| Norma MRP | <<locked>> | 92% | 53,867 psi | 88% | 2867 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,085 psi | 89% | 2766 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,533 psi | 86% | 2848 fps | 99.4% |
| Ramshot Hunter | <<locked>> | 86% | 52,866 psi | 87% | 2772 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,592 psi | 90% | 2838 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 62% | 1755 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 51,837 psi | 85% | 2753 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,853 psi | 88% | 2831 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,998 psi | 89% | 2946 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,515 psi | 80% | 2831 fps | 98% |
| Rottweil R 904 | <<locked>> | 90% | 54,186 psi | 89% | 2759 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 90% | 51,750 psi | 85% | 2766 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,389 psi | 89% | 2730 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,026 psi | 87% | 2700 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,650 psi | 90% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,214 psi | 86% | 2654 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,969 psi | 90% | 2818 fps | 99.9% |
| Somchem S361 | <<locked>> | 88% | 51,895 psi | 85% | 2700 fps | 98.4% |
| Somchem S365 | <<locked>> | 88% | 54,331 psi | 89% | 2766 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,170 psi | 86% | 2740 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 53,127 psi | 87% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,431 psi | 86% | 2707 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,808 psi | 85% | 2723 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 54,969 psi | 90% | 2762 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,708 psi | 88% | 2785 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,780 psi | 88% | 2864 fps | 99% |
| Vihtavuori N565 | <<locked>> | 98% | 53,214 psi | 87% | 2841 fps | 99.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,879 psi | 82% | 2841 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 51,721 psi | 85% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,751 psi | 88% | 2785 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,591 psi | 86% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,112 psi | 86% | 2736 fps | 99.6% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 33,272 psi | 55% | 2382 fps | 98.2% |
| Accurate 4350 | <<locked>> | 80% | 44,991 psi | 74% | 2621 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 36,230 psi | 59% | 2539 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 84% | 39,479 psi | 65% | 2605 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 37,768 psi | 62% | 2510 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 82% | 35,940 psi | 59% | 2497 fps | 95% |
| ADI AR 2217 | <<locked>> | 92% | 36,840 psi | 60% | 2520 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 88% | 28,993 psi | 48% | 2369 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,482 psi | 71% | 2631 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,198 psi | 82% | 2743 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,681 psi | 62% | 2507 fps | 97.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 33,431 psi | 55% | 2448 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,213 psi | 53% | 2415 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,963 psi | 46% | 2326 fps | 96.9% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,041 psi | 58% | 2546 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 90% | 46,456 psi | 76% | 2651 fps | 95.1% |
| Bofors RP15 | <<locked>> | 82% | 33,301 psi | 55% | 2441 fps | 95.5% |
| Bofors RP30 | <<locked>> | 90% | 35,679 psi | 59% | 2536 fps | 95.9% |
| Bofors RP5 | <<locked>> | 80% | 33,431 psi | 55% | 2448 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 48,051 psi | 79% | 2628 fps | 99.6% |
| Hodgdon H1000 | <<locked>> | 88% | 35,331 psi | 58% | 2487 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 47,007 psi | 77% | 2677 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 49,588 psi | 81% | 2687 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 82% | 38,363 psi | 63% | 2503 fps | 95.3% |
| Hodgdon H4831 SC | <<locked>> | 82% | 37,681 psi | 62% | 2490 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,915 psi | 67% | 2516 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 31,125 psi | 51% | 2461 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,354 psi | 76% | 2700 fps | 99.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 45% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,540 psi | 71% | 2566 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,530 psi | 81% | 2654 fps | 99.9% |
| IMR 4831 | <<locked>> | 80% | 42,931 psi | 70% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 37,710 psi | 62% | 2454 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 84% | 36,854 psi | 61% | 2533 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 98% | 35,955 psi | 59% | 2562 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 46,949 psi | 77% | 2602 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 45,063 psi | 74% | 2592 fps | 99.7% |
| Lovex S071 | <<locked>> | 80% | 28,558 psi | 47% | 2264 fps | 96.5% |
| Norma 204 | <<locked>> | 80% | 43,511 psi | 71% | 2605 fps | 98.3% |
| Norma 217 | <<locked>> | 92% | 29,298 psi | 48% | 2408 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 34,853 psi | 57% | 2510 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 44,309 psi | 73% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 36,376 psi | 60% | 2536 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,279 psi | 71% | 2615 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 82% | 29,936 psi | 49% | 2359 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 46% | 1568 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,034 psi | 74% | 2644 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,366 psi | 71% | 2664 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 30,139 psi | 49% | 2434 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 38,638 psi | 63% | 2635 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 39,059 psi | 64% | 2490 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,883 psi | 61% | 2487 fps | 97% |
| Rottweil R 907 | <<locked>> | 80% | 48,051 psi | 79% | 2628 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,949 psi | 77% | 2602 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 45,063 psi | 74% | 2592 fps | 99.7% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,905 psi | 75% | 2556 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,564 psi | 60% | 2484 fps | 96.9% |
| Somchem S361 | <<locked>> | 80% | 39,653 psi | 65% | 2477 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,350 psi | 68% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,449 psi | 61% | 2474 fps | 97.9% |
| Vihtavuori N150 | <<locked>> | 80% | 49,705 psi | 82% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,818 psi | 75% | 2605 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,343 psi | 53% | 2352 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 45,136 psi | 74% | 2612 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,056 psi | 59% | 2484 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 37,840 psi | 62% | 2566 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 88% | 37,739 psi | 62% | 2556 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 94% | 40,306 psi | 66% | 2654 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,904 psi | 74% | 2569 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,007 psi | 77% | 2677 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,427 psi | 47% | 2434 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 34,084 psi | 56% | 2398 fps | 95.9% |
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 | 206gr | Peregrine Glider GRM. Hodgdon Retumbo delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,946 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 206.0 gr projectile in 0.308" calls for a 1:8.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.