Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 185gr | Reichenberg HDB Universal bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Accurate MAGPRO and Ramshot Grand.
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% | 53,635 psi | 88% | 2904 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,969 psi | 90% | 2936 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 52,373 psi | 86% | 2999 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 52,504 psi | 86% | 2943 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 53,751 psi | 88% | 3002 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,080 psi | 79% | 2894 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,714 psi | 70% | 2854 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,591 psi | 86% | 2943 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,447 psi | 88% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,112 psi | 86% | 2933 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,621 psi | 88% | 2999 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,868 psi | 90% | 2966 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 3031 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,140 psi | 84% | 2999 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,431 psi | 86% | 2907 fps | 95.9% |
| Bofors RP15 | <<locked>> | 96% | 52,837 psi | 87% | 2982 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,169 psi | 82% | 2969 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 53,621 psi | 88% | 2999 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 54,070 psi | 89% | 2887 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,200 psi | 87% | 2989 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 53,359 psi | 88% | 2940 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 52,576 psi | 86% | 2897 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 92% | 53,722 psi | 88% | 2940 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,634 psi | 86% | 2923 fps | 98.1% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,881 psi | 87% | 2864 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,040 psi | 87% | 3104 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,476 psi | 88% | 2972 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,970 psi | 61% | 1841 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,301 psi | 86% | 2874 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,301 psi | 86% | 2858 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 51,909 psi | 85% | 2877 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 55,013 psi | 90% | 2927 fps | 98.6% |
| IMR 7828 SSC | <<locked>> | 94% | 51,648 psi | 85% | 2979 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 52,779 psi | 87% | 2854 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,230 psi | 89% | 2900 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,084 psi | 87% | 2927 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 38,189 psi | 63% | 2772 fps | 97.9% |
| Norma MRP | <<locked>> | 92% | 53,548 psi | 88% | 3022 fps | 100% |
| Norma URP | <<locked>> | 86% | 53,621 psi | 88% | 2920 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,025 psi | 85% | 2995 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 86% | 52,576 psi | 86% | 2927 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 54,447 psi | 89% | 2995 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,652 psi | 62% | 1880 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 51,416 psi | 84% | 2904 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,664 psi | 88% | 2995 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,766 psi | 88% | 3100 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,457 psi | 80% | 2976 fps | 97.2% |
| Rottweil R 904 | <<locked>> | 90% | 53,737 psi | 88% | 2910 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 92% | 55,056 psi | 90% | 2976 fps | 99.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,070 psi | 89% | 2887 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,779 psi | 87% | 2854 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,230 psi | 89% | 2900 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 51,924 psi | 85% | 2808 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,621 psi | 90% | 2972 fps | 99.6% |
| Somchem S355 | <<locked>> | 82% | 54,940 psi | 90% | 2877 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 51,721 psi | 85% | 2848 fps | 97.9% |
| Somchem S365 | <<locked>> | 88% | 53,969 psi | 89% | 2923 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 51,866 psi | 85% | 2890 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 52,794 psi | 87% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 51,909 psi | 85% | 2861 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 51,561 psi | 85% | 2874 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,636 psi | 90% | 2920 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,476 psi | 88% | 2943 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,490 psi | 88% | 3015 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 52,997 psi | 87% | 2989 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,806 psi | 82% | 2986 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,955 psi | 90% | 2871 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,563 psi | 88% | 2943 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,257 psi | 86% | 3048 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,808 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% | 32,909 psi | 54% | 2503 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 44,585 psi | 73% | 2766 fps | 100% |
| Accurate MAGPRO | 77.3 gr | 86% | 42,163 psi | 69% | 2802 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 37,420 psi | 61% | 2644 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 40,857 psi | 67% | 2749 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 39,204 psi | 64% | 2710 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 30,676 psi | 50% | 2539 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,091 psi | 71% | 2779 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,690 psi | 82% | 2897 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,318 psi | 61% | 2635 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,549 psi | 58% | 2635 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,865 psi | 52% | 2539 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,702 psi | 45% | 2441 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,693 psi | 57% | 2674 fps | 99.1% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,240 psi | 81% | 2848 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 35,360 psi | 58% | 2628 fps | 95.3% |
| Bofors RP30 | <<locked>> | 92% | 37,898 psi | 62% | 2720 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 35,549 psi | 58% | 2635 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 47,630 psi | 78% | 2776 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,463 psi | 62% | 2671 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 46,514 psi | 76% | 2822 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 49,240 psi | 81% | 2838 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 40,886 psi | 67% | 2700 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,917 psi | 70% | 2740 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,422 psi | 66% | 2657 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,302 psi | 58% | 2710 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,122 psi | 76% | 2848 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 45% | 1644 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,221 psi | 71% | 2707 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,052 psi | 81% | 2802 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 42,569 psi | 70% | 2717 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,972 psi | 66% | 2641 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 39,175 psi | 64% | 2723 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,543 psi | 76% | 2749 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,773 psi | 74% | 2736 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 28,297 psi | 46% | 2379 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,033 psi | 71% | 2743 fps | 97.6% |
| Norma 217 | <<locked>> | 96% | 33,214 psi | 55% | 2648 fps | 96% |
| Norma MRP | <<locked>> | 80% | 34,635 psi | 57% | 2641 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 44,005 psi | 72% | 2759 fps | 100% |
| Ramshot Grand | 75.2 gr | 86% | 38,783 psi | 64% | 2730 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 42,786 psi | 70% | 2753 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 32,097 psi | 53% | 2543 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,152 psi | 46% | 1683 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,730 psi | 73% | 2792 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,120 psi | 71% | 2808 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,010 psi | 53% | 2612 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,466 psi | 68% | 2835 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 38,798 psi | 64% | 2625 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,550 psi | 60% | 2618 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 47,630 psi | 78% | 2776 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,543 psi | 76% | 2749 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,773 psi | 74% | 2736 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,498 psi | 75% | 2697 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,230 psi | 59% | 2615 fps | 95.9% |
| Somchem S355 | <<locked>> | 80% | 51,677 psi | 85% | 2828 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,206 psi | 69% | 2671 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 40,944 psi | 67% | 2710 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,144 psi | 61% | 2605 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 49,414 psi | 81% | 2749 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,397 psi | 75% | 2753 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,316 psi | 56% | 2530 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,759 psi | 73% | 2756 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,636 psi | 59% | 2612 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 84% | 40,219 psi | 66% | 2759 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 40,190 psi | 66% | 2743 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 42,989 psi | 71% | 2848 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,614 psi | 73% | 2713 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,717 psi | 77% | 2825 fps | 99.5% |
| Winchester StaBALL HD | 69.8 gr | 80% | 28,065 psi | 46% | 2546 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,332 psi | 60% | 2585 fps | 95.8% |
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 76 powders for .300 Lapua Mag. loaded with the .308 | 185gr | Reichenberg HDB Universal. Hodgdon Retumbo delivers the highest muzzle velocity at 3,104 fps; across all powders the maximum-charge window runs from 1,841 fps to 3,104 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 1:11.5 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. Winchester StaBALL HD, Accurate MAGPRO, Ramshot Grand rank at the top here: for .300 Lapua Mag. with the .308 | 185gr | Reichenberg HDB Universal they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.