Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Sierra Pro-Hunter bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD and ReloadSwiss RS 76.
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>> | 92% | 53,534 psi | 88% | 2940 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,650 psi | 90% | 2972 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 52,707 psi | 87% | 3035 fps | 97.2% |
| ADI AR 2209 | <<locked>> | 88% | 51,793 psi | 85% | 2972 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 92% | 53,229 psi | 87% | 3035 fps | 98.7% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,068 psi | 84% | 2992 fps | 98.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 45,774 psi | 75% | 2953 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 84% | 51,953 psi | 85% | 2972 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,926 psi | 90% | 3018 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,403 psi | 88% | 3035 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,578 psi | 90% | 3002 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,925 psi | 89% | 3064 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,998 psi | 90% | 3094 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,882 psi | 90% | 2992 fps | 96.5% |
| Bofors RP15 | <<locked>> | 94% | 52,431 psi | 86% | 3015 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 3068 fps | 99.2% |
| Bofors RP5 | <<locked>> | 92% | 53,403 psi | 88% | 3035 fps | 99.5% |
| Bofors RP7 | <<locked>> | 82% | 53,156 psi | 87% | 2913 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,518 psi | 86% | 3018 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 84% | 53,722 psi | 88% | 2959 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 94% | 52,663 psi | 86% | 2963 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,069 psi | 85% | 2953 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,185 psi | 86% | 2894 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 52,953 psi | 87% | 3140 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 52,707 psi | 87% | 3002 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 61% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,824 psi | 90% | 2956 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,549 psi | 90% | 2936 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 52,881 psi | 87% | 2930 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,201 psi | 89% | 2956 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 92% | 55,013 psi | 90% | 3077 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,162 psi | 68% | 2848 fps | 96.5% |
| Lovex S065 | <<locked>> | 82% | 52,011 psi | 85% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,490 psi | 88% | 2930 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 54,752 psi | 90% | 2959 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,214 psi | 86% | 2953 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 41,336 psi | 68% | 2877 fps | 98.7% |
| Norma MRP | <<locked>> | 90% | 53,156 psi | 87% | 3051 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 52,968 psi | 87% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 54,781 psi | 90% | 3081 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 84% | 51,924 psi | 85% | 2956 fps | 100% |
| Ramshot Magnum | <<locked>> | 92% | 51,909 psi | 85% | 2992 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,000 psi | 62% | 1929 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 54,534 psi | 90% | 2992 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,765 psi | 87% | 3018 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,417 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,417 psi | 86% | 3081 fps | 98% |
| Rottweil R 904 | <<locked>> | 88% | 52,953 psi | 87% | 2940 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 54,491 psi | 89% | 3009 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 82% | 53,156 psi | 87% | 2913 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,011 psi | 85% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,490 psi | 88% | 2930 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 54,462 psi | 89% | 2887 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,070 psi | 89% | 3002 fps | 99.6% |
| Somchem S361 | <<locked>> | 88% | 54,317 psi | 89% | 2933 fps | 98.3% |
| Somchem S365 | <<locked>> | 86% | 53,534 psi | 88% | 2956 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 55,042 psi | 90% | 2979 fps | 99.9% |
| Unknown powder | <<locked>> | 82% | 53,156 psi | 87% | 2953 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 52,765 psi | 87% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 53,388 psi | 88% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,663 psi | 86% | 2930 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 82% | 54,056 psi | 89% | 2969 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 53,258 psi | 87% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,490 psi | 88% | 3058 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 96% | 52,895 psi | 87% | 3025 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,403 psi | 88% | 3084 fps | 97.7% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,012 psi | 89% | 2897 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 94% | 52,518 psi | 86% | 3087 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 88% | 52,489 psi | 86% | 2936 fps | 99.3% |
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% | 35,650 psi | 59% | 2598 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 47,601 psi | 78% | 2858 fps | 100% |
| Accurate MAGPRO | <<locked>> | 88% | 45,716 psi | 75% | 2904 fps | 95.4% |
| ADI AR 2209 | <<locked>> | 80% | 39,581 psi | 65% | 2726 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 40,538 psi | 67% | 2779 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 39,117 psi | 64% | 2743 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 88% | 30,879 psi | 51% | 2575 fps | 95.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,426 psi | 75% | 2861 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,653 psi | 65% | 2723 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,534 psi | 58% | 2664 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 34,272 psi | 56% | 2628 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,718 psi | 49% | 2533 fps | 96.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 37,579 psi | 62% | 2772 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,547 psi | 85% | 2933 fps | 95.7% |
| Bofors RP15 | <<locked>> | 82% | 35,375 psi | 58% | 2657 fps | 95.2% |
| Bofors RP30 | <<locked>> | 90% | 38,159 psi | 63% | 2759 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 35,534 psi | 58% | 2664 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 49,980 psi | 82% | 2858 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 90% | 37,550 psi | 62% | 2707 fps | 95.6% |
| Hodgdon H4350 | <<locked>> | 80% | 47,514 psi | 78% | 2848 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 40,640 psi | 67% | 2730 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,511 psi | 70% | 2769 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,989 psi | 71% | 2740 fps | 100% |
| Hodgdon Retumbo | 76.8 gr | 86% | 35,346 psi | 58% | 2740 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 48,892 psi | 80% | 2936 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,934 psi | 46% | 1686 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,382 psi | 75% | 2789 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,198 psi | 84% | 2881 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 41,104 psi | 67% | 2720 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,061 psi | 69% | 2726 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 82% | 38,870 psi | 64% | 2753 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 38,580 psi | 63% | 2789 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 48,965 psi | 80% | 2831 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 47,210 psi | 78% | 2822 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,690 psi | 50% | 2470 fps | 96.3% |
| Norma 204 | <<locked>> | 80% | 45,498 psi | 75% | 2828 fps | 98.1% |
| Norma 217 | <<locked>> | 92% | 31,618 psi | 52% | 2628 fps | 95% |
| Norma MRP | <<locked>> | 80% | 37,217 psi | 61% | 2733 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 46,514 psi | 76% | 2841 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 37,536 psi | 62% | 2733 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 45,382 psi | 75% | 2841 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 80% | 32,721 psi | 54% | 2589 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 47% | 1726 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,558 psi | 78% | 2877 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,658 psi | 75% | 2894 fps | 100% |
| ReloadSwiss RS 76 | 80.3 gr | 84% | 32,184 psi | 53% | 2648 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 41,698 psi | 68% | 2871 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 40,959 psi | 67% | 2707 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 39,088 psi | 64% | 2710 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 49,980 psi | 82% | 2858 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,965 psi | 80% | 2831 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 47,210 psi | 78% | 2822 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,906 psi | 79% | 2779 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,754 psi | 64% | 2707 fps | 96.7% |
| Somchem S361 | <<locked>> | 80% | 41,611 psi | 68% | 2694 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,671 psi | 72% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,624 psi | 65% | 2694 fps | 97.7% |
| Unknown powder | <<locked>> | 80% | 49,734 psi | 82% | 2897 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 46,746 psi | 77% | 2746 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 50,009 psi | 82% | 2867 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,286 psi | 55% | 2533 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 50,488 psi | 83% | 2910 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,377 psi | 63% | 2707 fps | 99.8% |
| Vihtavuori N560 | <<locked>> | 84% | 40,799 psi | 67% | 2805 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 88% | 40,292 psi | 66% | 2776 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 94% | 43,091 psi | 71% | 2887 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,079 psi | 77% | 2792 fps | 100% |
| Winchester StaBALL HD | 73.4 gr | 80% | 30,443 psi | 50% | 2651 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 39,465 psi | 65% | 2690 fps | 96.8% |
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 69 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Sierra Pro-Hunter. Hodgdon Retumbo delivers the highest muzzle velocity at 3,140 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,140 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 180.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Sierra Pro-Hunter 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.