Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 185gr | Berger Hybrid Target bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Accurate MAGPRO, Accurate High Country and Alliant Reloder-26.
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% | 54,143 psi | 89% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,025 psi | 85% | 2884 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 51,967 psi | 85% | 2999 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 92% | 52,692 psi | 87% | 2999 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 52,794 psi | 87% | 2940 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 54,114 psi | 89% | 3002 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,399 psi | 79% | 2890 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,163 psi | 71% | 2858 fps | 99.5% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 53,011 psi | 87% | 2936 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 53,011 psi | 87% | 2936 fps | 99.3% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,939 psi | 87% | 2940 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,896 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,388 psi | 86% | 2927 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,056 psi | 89% | 2999 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 51,648 psi | 85% | 2917 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,476 psi | 89% | 3028 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,488 psi | 85% | 2999 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,055 psi | 87% | 2979 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,372 psi | 83% | 2966 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 54,056 psi | 89% | 2999 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 54,534 psi | 90% | 2884 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,519 psi | 88% | 2986 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 53,606 psi | 88% | 2936 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 52,881 psi | 87% | 2894 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 54,041 psi | 89% | 2936 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,011 psi | 87% | 2920 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,171 psi | 87% | 2861 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,388 psi | 88% | 3100 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,853 psi | 88% | 2972 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,086 psi | 61% | 1834 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,707 psi | 87% | 2871 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,605 psi | 86% | 2854 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 52,475 psi | 86% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 51,866 psi | 85% | 2864 fps | 98% |
| IMR 7828 SSC | <<locked>> | 94% | 51,996 psi | 85% | 2976 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 53,258 psi | 87% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,781 psi | 90% | 2904 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 51,822 psi | 85% | 2867 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,345 psi | 88% | 2923 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,783 psi | 64% | 2779 fps | 98% |
| Norma MRP | <<locked>> | 92% | 53,809 psi | 88% | 3018 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,128 psi | 89% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,489 psi | 86% | 2995 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 86% | 52,910 psi | 87% | 2927 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,592 psi | 90% | 2989 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,840 psi | 62% | 1877 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,054 psi | 85% | 2907 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,737 psi | 88% | 2989 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,099 psi | 89% | 3100 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,863 psi | 80% | 2976 fps | 97.2% |
| Rottweil R 904 | <<locked>> | 90% | 53,983 psi | 89% | 2907 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 51,764 psi | 85% | 2917 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,534 psi | 90% | 2884 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,258 psi | 87% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,781 psi | 90% | 2904 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,475 psi | 86% | 2805 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,955 psi | 90% | 2969 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 51,938 psi | 85% | 2841 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 54,317 psi | 89% | 2920 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,344 psi | 86% | 2890 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 53,243 psi | 87% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,344 psi | 86% | 2858 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,822 psi | 85% | 2867 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,998 psi | 90% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,012 psi | 89% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,722 psi | 88% | 3012 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 53,505 psi | 88% | 2992 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,067 psi | 82% | 2982 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 51,590 psi | 85% | 2815 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,824 psi | 88% | 2940 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,504 psi | 86% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,069 psi | 85% | 2884 fps | 99.2% |
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% | 33,866 psi | 56% | 2516 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 45,440 psi | 75% | 2772 fps | 100% |
| Accurate High Country | 71.3 gr | 82% | 39,233 psi | 64% | 2740 fps | 95.5% |
| Accurate MAGPRO | 76.2 gr | 86% | 42,641 psi | 70% | 2805 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 37,840 psi | 62% | 2644 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 41,394 psi | 68% | 2756 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 94% | 39,740 psi | 65% | 2710 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 31,285 psi | 51% | 2549 fps | 95.4% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,261 psi | 63% | 2648 fps | 96.3% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 38,261 psi | 63% | 2648 fps | 96.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,381 psi | 71% | 2776 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,096 psi | 82% | 2894 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,927 psi | 62% | 2641 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,129 psi | 59% | 2641 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,430 psi | 53% | 2546 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,311 psi | 46% | 2451 fps | 95.8% |
| Alliant Reloder-26 | 71.7 gr | 80% | 35,418 psi | 58% | 2687 fps | 99.2% |
| Bofors RP15 | <<locked>> | 84% | 35,795 psi | 59% | 2631 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 38,479 psi | 63% | 2730 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 36,129 psi | 59% | 2641 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,066 psi | 79% | 2772 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,927 psi | 62% | 2671 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 46,963 psi | 77% | 2822 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,588 psi | 81% | 2835 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 41,205 psi | 68% | 2697 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,410 psi | 71% | 2743 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,002 psi | 67% | 2657 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,663 psi | 55% | 2651 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 46,456 psi | 76% | 2848 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 46% | 1640 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,584 psi | 72% | 2707 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,501 psi | 81% | 2799 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,120 psi | 71% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,393 psi | 66% | 2644 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 39,740 psi | 65% | 2730 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,021 psi | 77% | 2749 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,324 psi | 74% | 2736 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,109 psi | 48% | 2392 fps | 95.7% |
| Norma 204 | <<locked>> | 80% | 43,468 psi | 71% | 2743 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 31,734 psi | 52% | 2595 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 35,244 psi | 58% | 2648 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,425 psi | 73% | 2756 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,407 psi | 65% | 2736 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,294 psi | 71% | 2756 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 32,677 psi | 54% | 2549 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 47% | 1680 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,353 psi | 74% | 2795 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,424 psi | 71% | 2808 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,677 psi | 54% | 2625 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,090 psi | 69% | 2838 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 39,204 psi | 64% | 2621 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,231 psi | 61% | 2625 fps | 96.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,066 psi | 79% | 2772 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,021 psi | 77% | 2749 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,324 psi | 74% | 2736 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,021 psi | 76% | 2697 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,898 psi | 61% | 2621 fps | 96.1% |
| Somchem S361 | <<locked>> | 82% | 42,656 psi | 70% | 2671 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,481 psi | 68% | 2713 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,768 psi | 62% | 2608 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 49,850 psi | 82% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,006 psi | 76% | 2753 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 32,706 psi | 54% | 2480 fps | 95% |
| Vihtavuori N550 | <<locked>> | 80% | 45,281 psi | 74% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,506 psi | 60% | 2625 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 40,828 psi | 67% | 2762 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 90% | 40,654 psi | 67% | 2746 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 43,453 psi | 71% | 2854 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,904 psi | 74% | 2710 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,166 psi | 77% | 2825 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,776 psi | 47% | 2559 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,898 psi | 61% | 2589 fps | 95.9% |
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 | 185gr | Berger Hybrid Target. Hodgdon Retumbo delivers the highest muzzle velocity at 3,100 fps; across all powders the maximum-charge window runs from 1,834 fps to 3,100 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 185.0 gr projectile in 0.308" calls for a 1:11.0 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. Accurate MAGPRO, Accurate High Country, Alliant Reloder-26 rank at the top here: for .300 Lapua Mag. with the .308 | 185gr | Berger Hybrid Target 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.