Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Winchester FailSafe bullet and 69 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Hodgdon Retumbo.
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% | 54,839 psi | 90% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,446 psi | 86% | 2930 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 53,214 psi | 87% | 3048 fps | 97.7% |
| ADI AR 2209 | <<locked>> | 90% | 53,200 psi | 87% | 2986 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 54,505 psi | 89% | 3048 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,994 psi | 80% | 2943 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,685 psi | 72% | 2904 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,403 psi | 88% | 2989 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,259 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,794 psi | 87% | 2976 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,505 psi | 89% | 3045 fps | 99.5% |
| Alliant Reloder-23 | <<locked>> | 94% | 52,214 psi | 86% | 2963 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 3077 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,127 psi | 86% | 3048 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,708 psi | 88% | 3028 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,053 psi | 84% | 3018 fps | 98.7% |
| Bofors RP5 | <<locked>> | 94% | 54,505 psi | 89% | 3045 fps | 99.5% |
| Bofors RP7 | <<locked>> | 84% | 54,984 psi | 90% | 2933 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,882 psi | 88% | 3031 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 84% | 54,157 psi | 89% | 2986 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 53,156 psi | 87% | 2940 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 54,491 psi | 89% | 2986 fps | 98.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,432 psi | 88% | 2966 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,780 psi | 88% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,983 psi | 89% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,360 psi | 89% | 3022 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,115 psi | 61% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,026 psi | 87% | 2917 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,895 psi | 87% | 2900 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 52,866 psi | 87% | 2923 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,257 psi | 86% | 2913 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 94% | 52,460 psi | 86% | 3025 fps | 98.5% |
| Lovex S065 | <<locked>> | 84% | 53,548 psi | 88% | 2900 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 51,793 psi | 85% | 2894 fps | 99.8% |
| Lovex S071 | <<locked>> | 98% | 52,301 psi | 86% | 2913 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,780 psi | 88% | 2972 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 39,218 psi | 64% | 2825 fps | 98% |
| Norma MRP | <<locked>> | 92% | 54,418 psi | 89% | 3068 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,505 psi | 89% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,040 psi | 87% | 3045 fps | 98.9% |
| Ramshot Hunter | <<locked>> | 86% | 53,345 psi | 88% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 51,140 psi | 84% | 2976 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,826 psi | 62% | 1913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,344 psi | 86% | 2953 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,331 psi | 89% | 3038 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,636 psi | 90% | 3150 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,617 psi | 81% | 3028 fps | 97.3% |
| Rottweil R 904 | <<locked>> | 90% | 54,404 psi | 89% | 2956 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 52,185 psi | 86% | 2963 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 54,984 psi | 90% | 2933 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,548 psi | 88% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 51,793 psi | 85% | 2894 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,663 psi | 86% | 2851 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 51,822 psi | 85% | 2959 fps | 99.2% |
| Somchem S361 | <<locked>> | 88% | 52,373 psi | 86% | 2887 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 54,853 psi | 90% | 2969 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,910 psi | 87% | 2936 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 53,548 psi | 88% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,779 psi | 87% | 2907 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,446 psi | 86% | 2917 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 84% | 52,083 psi | 86% | 2913 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,476 psi | 89% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,288 psi | 89% | 3061 fps | 98.4% |
| Vihtavuori N565 | <<locked>> | 98% | 54,099 psi | 89% | 3041 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,720 psi | 83% | 3031 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,141 psi | 86% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,157 psi | 89% | 2986 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,388 psi | 88% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,489 psi | 86% | 2930 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% | 34,185 psi | 56% | 2559 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 45,832 psi | 75% | 2818 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 42,989 psi | 71% | 2848 fps | 95.1% |
| ADI AR 2209 | <<locked>> | 80% | 38,174 psi | 63% | 2687 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 41,626 psi | 68% | 2795 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 40,103 psi | 66% | 2756 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 31,633 psi | 52% | 2592 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,830 psi | 72% | 2825 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,560 psi | 83% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,218 psi | 63% | 2684 fps | 96.1% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,332 psi | 60% | 2680 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,764 psi | 54% | 2589 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,572 psi | 47% | 2490 fps | 95.8% |
| Alliant Reloder-26 | 73.7 gr | 80% | 35,752 psi | 59% | 2726 fps | 99.2% |
| Bofors RP15 | <<locked>> | 84% | 36,172 psi | 59% | 2674 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 38,783 psi | 64% | 2769 fps | 95.7% |
| Bofors RP5 | <<locked>> | 82% | 36,332 psi | 60% | 2680 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,443 psi | 80% | 2822 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 38,377 psi | 63% | 2720 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 47,268 psi | 78% | 2867 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 80% | 49,893 psi | 82% | 2884 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 41,495 psi | 68% | 2740 fps | 95.1% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,671 psi | 72% | 2785 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,292 psi | 68% | 2703 fps | 100% |
| Hodgdon Retumbo | 74.1 gr | 86% | 33,895 psi | 56% | 2690 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 46,891 psi | 77% | 2894 fps | 99.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,760 psi | 46% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,903 psi | 72% | 2749 fps | 98.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,690 psi | 82% | 2844 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,511 psi | 71% | 2762 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,611 psi | 67% | 2684 fps | 95% |
| IMR 7828 SSC | <<locked>> | 86% | 40,001 psi | 66% | 2772 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,413 psi | 78% | 2795 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,672 psi | 75% | 2785 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,385 psi | 48% | 2431 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,888 psi | 72% | 2789 fps | 97.5% |
| Norma 217 | <<locked>> | 94% | 32,097 psi | 53% | 2638 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 35,476 psi | 58% | 2687 fps | 96.8% |
| Norma URP | <<locked>> | 80% | 44,817 psi | 74% | 2802 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,755 psi | 65% | 2782 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 43,685 psi | 72% | 2802 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 32,996 psi | 54% | 2592 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,326 psi | 47% | 1709 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,585 psi | 75% | 2838 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,787 psi | 72% | 2854 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,040 psi | 54% | 2664 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,540 psi | 70% | 2884 fps | 95.2% |
| Rottweil R 904 | <<locked>> | 80% | 39,537 psi | 65% | 2667 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,405 psi | 61% | 2664 fps | 96% |
| Rottweil R 907 | <<locked>> | 80% | 48,443 psi | 80% | 2822 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,413 psi | 78% | 2795 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,672 psi | 75% | 2785 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,325 psi | 76% | 2740 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,086 psi | 61% | 2661 fps | 95.9% |
| Somchem S361 | <<locked>> | 82% | 43,047 psi | 71% | 2713 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 41,872 psi | 69% | 2759 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,043 psi | 62% | 2651 fps | 97.1% |
| Vihtavuori N150 | <<locked>> | 80% | 50,241 psi | 82% | 2795 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,340 psi | 76% | 2799 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,259 psi | 58% | 2579 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 45,730 psi | 75% | 2802 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,709 psi | 60% | 2664 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 41,046 psi | 67% | 2805 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 41,133 psi | 68% | 2792 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 44,019 psi | 72% | 2900 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,368 psi | 74% | 2756 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,456 psi | 78% | 2871 fps | 99.4% |
| Winchester StaBALL HD | 70.8 gr | 80% | 29,095 psi | 48% | 2605 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,260 psi | 61% | 2635 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 75 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Winchester FailSafe. Hodgdon Retumbo delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,153 fps. ADI AR 2217 gives the best case fill at 100 %, and 75 of the 75 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 1:13.0 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. Alliant Reloder-26, Winchester StaBALL HD, Hodgdon Retumbo rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Winchester FailSafe 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.