Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Barnes XLC S bullet and 70 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>> | 92% | 54,563 psi | 90% | 2930 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 52,315 psi | 86% | 2907 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 51,779 psi | 85% | 3015 fps | 98.5% |
| Accurate MAGPRO | <<locked>> | 90% | 52,388 psi | 86% | 3012 fps | 97.5% |
| ADI AR 2209 | <<locked>> | 88% | 52,127 psi | 86% | 2949 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 92% | 53,287 psi | 87% | 3009 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,416 psi | 84% | 2969 fps | 98.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,340 psi | 76% | 2940 fps | 99.7% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 52,504 psi | 86% | 2949 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,185 psi | 86% | 2953 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 51,938 psi | 85% | 2943 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,693 psi | 88% | 3012 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,940 psi | 90% | 2989 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 54,215 psi | 89% | 3051 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 51,445 psi | 84% | 3022 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,824 psi | 90% | 2963 fps | 96.1% |
| Bofors RP15 | <<locked>> | 94% | 52,997 psi | 87% | 3002 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 54,041 psi | 89% | 3048 fps | 99.1% |
| Bofors RP5 | <<locked>> | 92% | 53,693 psi | 88% | 3012 fps | 99.4% |
| Bofors RP7 | <<locked>> | 82% | 53,954 psi | 89% | 2894 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 98% | 52,779 psi | 87% | 2995 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 82% | 53,098 psi | 87% | 2949 fps | 99.9% |
| Hodgdon H4831 | <<locked>> | 90% | 53,316 psi | 88% | 2949 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,344 psi | 86% | 2933 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,852 psi | 87% | 2881 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 53,098 psi | 87% | 3120 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 52,924 psi | 87% | 2982 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,376 psi | 61% | 1864 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 51,996 psi | 85% | 2881 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 55,013 psi | 90% | 2917 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 52,359 psi | 86% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,288 psi | 89% | 2930 fps | 98.2% |
| IMR 7828 SSC | <<locked>> | 94% | 54,897 psi | 90% | 3048 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 42,192 psi | 69% | 2851 fps | 96.6% |
| Lovex S065 | <<locked>> | 82% | 52,953 psi | 87% | 2871 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,491 psi | 89% | 2917 fps | 99.9% |
| Lovex S071 | <<locked>> | 96% | 52,562 psi | 86% | 2897 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,620 psi | 86% | 2933 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 42,351 psi | 70% | 2877 fps | 98.7% |
| Norma MRP | <<locked>> | 90% | 53,534 psi | 88% | 3035 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 53,693 psi | 88% | 2936 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 51,793 psi | 85% | 3005 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 84% | 52,431 psi | 86% | 2940 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,983 psi | 89% | 3002 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 63% | 1909 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 51,822 psi | 85% | 2927 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,953 psi | 87% | 3002 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,606 psi | 88% | 3117 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,634 psi | 86% | 3068 fps | 97.8% |
| Rottweil R 904 | <<locked>> | 88% | 53,359 psi | 88% | 2920 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 90% | 54,926 psi | 90% | 2989 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 53,954 psi | 89% | 2894 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,953 psi | 87% | 2871 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,491 psi | 89% | 2917 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 52,083 psi | 86% | 2822 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,491 psi | 89% | 2986 fps | 99.5% |
| Somchem S361 | <<locked>> | 88% | 54,766 psi | 90% | 2910 fps | 98.1% |
| Somchem S365 | <<locked>> | 86% | 54,230 psi | 89% | 2943 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,388 psi | 86% | 2910 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 82% | 51,909 psi | 85% | 2874 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,853 psi | 90% | 2940 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 84% | 54,621 psi | 90% | 2933 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,389 psi | 89% | 2969 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 53,287 psi | 87% | 3028 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 96% | 53,621 psi | 88% | 3015 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,534 psi | 88% | 3064 fps | 97.4% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,375 psi | 89% | 2881 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,330 psi | 88% | 2953 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 52,373 psi | 86% | 3074 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 55,056 psi | 90% | 2949 fps | 99.4% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 37,594 psi | 62% | 2615 fps | 98.4% |
| Accurate 4350 | <<locked>> | 80% | 49,052 psi | 81% | 2854 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 39,842 psi | 65% | 2772 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 84% | 43,004 psi | 71% | 2831 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 40,553 psi | 67% | 2723 fps | 96.7% |
| ADI AR 2213 | <<locked>> | 84% | 41,379 psi | 68% | 2772 fps | 95.6% |
| ADI AR 2217 | <<locked>> | 92% | 40,016 psi | 66% | 2733 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 88% | 32,372 psi | 53% | 2592 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 40,901 psi | 67% | 2723 fps | 96.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 46,209 psi | 76% | 2851 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,567 psi | 67% | 2720 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,782 psi | 60% | 2671 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,621 psi | 58% | 2638 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,285 psi | 51% | 2552 fps | 97.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,870 psi | 64% | 2782 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,808 psi | 85% | 2907 fps | 95.3% |
| Bofors RP15 | <<locked>> | 82% | 36,651 psi | 60% | 2664 fps | 95.5% |
| Bofors RP30 | <<locked>> | 90% | 39,320 psi | 65% | 2762 fps | 95.8% |
| Bofors RP5 | <<locked>> | 80% | 36,782 psi | 60% | 2671 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 50,952 psi | 84% | 2844 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 38,377 psi | 63% | 2697 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 49,966 psi | 82% | 2894 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 84% | 43,888 psi | 72% | 2772 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,265 psi | 71% | 2759 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,918 psi | 72% | 2733 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 84% | 34,447 psi | 57% | 2684 fps | 95.2% |
| Hodgdon Superformance | <<locked>> | 80% | 49,458 psi | 81% | 2920 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,253 psi | 46% | 1670 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 46,195 psi | 76% | 2776 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,764 psi | 85% | 2861 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 46,456 psi | 76% | 2795 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,801 psi | 70% | 2713 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 39,900 psi | 66% | 2749 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,639 psi | 65% | 2789 fps | 95.7% |
| Lovex S065 | <<locked>> | 80% | 50,038 psi | 82% | 2822 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 48,472 psi | 80% | 2815 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 32,938 psi | 54% | 2500 fps | 97% |
| Norma 204 | <<locked>> | 80% | 46,195 psi | 76% | 2818 fps | 98% |
| Norma 217 | <<locked>> | 92% | 33,257 psi | 55% | 2651 fps | 95.6% |
| Norma MRP | <<locked>> | 80% | 38,406 psi | 63% | 2740 fps | 97.7% |
| Norma URP | <<locked>> | 80% | 47,558 psi | 78% | 2835 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,726 psi | 65% | 2759 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 46,151 psi | 76% | 2828 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 82% | 33,475 psi | 55% | 2582 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,892 psi | 47% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,486 psi | 80% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 46,296 psi | 76% | 2887 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 82% | 31,589 psi | 52% | 2598 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,714 psi | 70% | 2871 fps | 95.1% |
| Rottweil R 904 | <<locked>> | 80% | 41,916 psi | 69% | 2700 fps | 96% |
| Rottweil R 905 | <<locked>> | 80% | 40,161 psi | 66% | 2707 fps | 96.9% |
| Rottweil R 907 | <<locked>> | 80% | 50,952 psi | 84% | 2844 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 50,038 psi | 82% | 2822 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 48,472 psi | 80% | 2815 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,994 psi | 80% | 2769 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,813 psi | 65% | 2703 fps | 96.8% |
| Somchem S361 | <<locked>> | 80% | 42,598 psi | 70% | 2684 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 44,817 psi | 74% | 2795 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,017 psi | 67% | 2694 fps | 97.9% |
| Vihtavuori N160 | <<locked>> | 80% | 48,791 psi | 80% | 2822 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,592 psi | 58% | 2566 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 48,385 psi | 79% | 2831 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,030 psi | 66% | 2713 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,973 psi | 67% | 2782 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 88% | 41,582 psi | 68% | 2782 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 46,920 psi | 77% | 2943 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,761 psi | 78% | 2779 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,111 psi | 82% | 2897 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 32,010 psi | 53% | 2671 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,391 psi | 61% | 2615 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 70 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Barnes XLC S. Hodgdon Retumbo delivers the highest muzzle velocity at 3,120 fps; across all powders the maximum-charge window runs from 1,864 fps to 3,120 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 1:12.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.