Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Barnes X BT bullet and 68 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo 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% | 54,317 psi | 89% | 2923 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 51,996 psi | 85% | 2900 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 52,083 psi | 86% | 3005 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 90% | 55,100 psi | 90% | 2999 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 92% | 53,069 psi | 87% | 3005 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 51,010 psi | 84% | 2959 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 46,021 psi | 76% | 2933 fps | 99.7% |
| Alliant Reloder-16 | <<locked>> | 84% | 52,025 psi | 85% | 2949 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,998 psi | 90% | 2995 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 53,447 psi | 88% | 3009 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 94% | 54,650 psi | 90% | 2982 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,693 psi | 88% | 3038 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 54,824 psi | 90% | 3071 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,636 psi | 90% | 2956 fps | 96% |
| Bofors RP15 | <<locked>> | 94% | 52,678 psi | 86% | 2995 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 53,534 psi | 88% | 3041 fps | 99% |
| Bofors RP5 | <<locked>> | 92% | 53,447 psi | 88% | 3009 fps | 99.4% |
| Bofors RP7 | <<locked>> | 82% | 53,867 psi | 88% | 2894 fps | 99.7% |
| Hodgdon H1000 | <<locked>> | 98% | 52,504 psi | 86% | 2989 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 82% | 52,808 psi | 87% | 2943 fps | 99.8% |
| Hodgdon H4831 | <<locked>> | 90% | 53,069 psi | 87% | 2943 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 52,098 psi | 86% | 2927 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 52,489 psi | 86% | 2874 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 52,649 psi | 86% | 3110 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 82% | 52,649 psi | 86% | 2976 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1860 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,984 psi | 90% | 2930 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,708 psi | 90% | 2910 fps | 99.9% |
| IMR 4831 | <<locked>> | 84% | 52,243 psi | 86% | 2894 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 54,041 psi | 89% | 2923 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 94% | 54,621 psi | 90% | 3041 fps | 98.8% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 41,843 psi | 69% | 2841 fps | 96.4% |
| Lovex S065 | <<locked>> | 82% | 52,678 psi | 86% | 2864 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 54,157 psi | 89% | 2913 fps | 99.9% |
| Lovex S071 | <<locked>> | 96% | 52,301 psi | 86% | 2894 fps | 100% |
| Norma 204 | <<locked>> | 84% | 52,330 psi | 86% | 2927 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 42,076 psi | 69% | 2871 fps | 98.6% |
| Norma MRP | <<locked>> | 90% | 53,040 psi | 87% | 3028 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 53,330 psi | 88% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 51,488 psi | 85% | 2999 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 84% | 52,127 psi | 86% | 2936 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 53,693 psi | 88% | 2999 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,276 psi | 63% | 1906 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 55,027 psi | 90% | 2976 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 52,663 psi | 86% | 2995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 53,142 psi | 87% | 3107 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 52,301 psi | 86% | 3058 fps | 97.7% |
| Rottweil R 904 | <<locked>> | 88% | 53,069 psi | 87% | 2913 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 90% | 54,650 psi | 90% | 2986 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 82% | 53,867 psi | 88% | 2894 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 82% | 52,678 psi | 86% | 2864 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 54,157 psi | 89% | 2913 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 51,837 psi | 85% | 2815 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 54,215 psi | 89% | 2979 fps | 99.4% |
| Somchem S361 | <<locked>> | 88% | 54,534 psi | 90% | 2904 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 53,867 psi | 88% | 2940 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 52,112 psi | 86% | 2904 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 84% | 54,940 psi | 90% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 54,592 psi | 90% | 2933 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 54,317 psi | 89% | 2930 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 54,070 psi | 89% | 2966 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 52,823 psi | 87% | 3018 fps | 98.1% |
| Vihtavuori N565 | <<locked>> | 96% | 53,316 psi | 88% | 3009 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 53,287 psi | 87% | 3061 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 54,128 psi | 89% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 52,997 psi | 87% | 2946 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 94% | 52,025 psi | 85% | 3068 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,795 psi | 90% | 2946 fps | 99.4% |
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% | 37,449 psi | 61% | 2612 fps | 98.3% |
| Accurate 4350 | <<locked>> | 80% | 48,907 psi | 80% | 2851 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 45,527 psi | 75% | 2884 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 40,263 psi | 66% | 2717 fps | 96.6% |
| ADI AR 2213 | <<locked>> | 84% | 41,147 psi | 68% | 2766 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 92% | 39,798 psi | 65% | 2726 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 88% | 32,184 psi | 53% | 2585 fps | 95.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,876 psi | 75% | 2844 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 40,437 psi | 66% | 2713 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 36,535 psi | 60% | 2664 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 35,317 psi | 58% | 2628 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,038 psi | 51% | 2546 fps | 97% |
| Alliant Reloder-26 | <<locked>> | 80% | 38,566 psi | 63% | 2776 fps | 99.6% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 51,474 psi | 85% | 2900 fps | 95.2% |
| Bofors RP15 | <<locked>> | 82% | 36,390 psi | 60% | 2657 fps | 95.4% |
| Bofors RP30 | <<locked>> | 90% | 39,073 psi | 64% | 2759 fps | 95.7% |
| Bofors RP5 | <<locked>> | 80% | 36,535 psi | 60% | 2664 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 50,662 psi | 83% | 2838 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 38,174 psi | 63% | 2690 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 49,617 psi | 81% | 2890 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 84% | 43,685 psi | 72% | 2766 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 43,018 psi | 71% | 2753 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 43,787 psi | 72% | 2730 fps | 100% |
| Hodgdon Retumbo | 70.9 gr | 84% | 34,229 psi | 56% | 2680 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 49,182 psi | 81% | 2917 fps | 99.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,123 psi | 46% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 45,934 psi | 75% | 2769 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 51,663 psi | 85% | 2858 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 46,122 psi | 76% | 2789 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 42,699 psi | 70% | 2710 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 84% | 39,697 psi | 65% | 2743 fps | 95.1% |
| IMR 8133 Enduron | <<locked>> | 98% | 39,407 psi | 65% | 2782 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 49,748 psi | 82% | 2815 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 48,153 psi | 79% | 2808 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 32,648 psi | 54% | 2493 fps | 96.9% |
| Norma 204 | <<locked>> | 80% | 45,948 psi | 75% | 2812 fps | 97.9% |
| Norma 217 | <<locked>> | 92% | 33,069 psi | 54% | 2644 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 38,145 psi | 63% | 2733 fps | 97.6% |
| Norma URP | <<locked>> | 80% | 47,224 psi | 78% | 2825 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 39,479 psi | 65% | 2753 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 45,905 psi | 75% | 2822 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 82% | 33,402 psi | 55% | 2579 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,906 psi | 47% | 1706 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 48,370 psi | 79% | 2867 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,992 psi | 76% | 2881 fps | 100% |
| ReloadSwiss RS 76 | 75.9 gr | 84% | 33,460 psi | 55% | 2657 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 94% | 42,351 psi | 70% | 2861 fps | 95% |
| Rottweil R 904 | <<locked>> | 80% | 41,626 psi | 68% | 2694 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 39,842 psi | 65% | 2700 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 50,662 psi | 83% | 2838 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 49,748 psi | 82% | 2815 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 48,153 psi | 79% | 2808 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 48,747 psi | 80% | 2762 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 39,508 psi | 65% | 2697 fps | 96.6% |
| Somchem S361 | <<locked>> | 80% | 42,409 psi | 70% | 2680 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 44,483 psi | 73% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 40,741 psi | 67% | 2687 fps | 97.8% |
| Vihtavuori N160 | <<locked>> | 80% | 48,646 psi | 80% | 2818 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 35,476 psi | 58% | 2562 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 48,080 psi | 79% | 2825 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 39,711 psi | 65% | 2707 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 40,698 psi | 67% | 2776 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 41,350 psi | 68% | 2779 fps | 95.5% |
| Vihtavuori N568 | <<locked>> | 96% | 46,499 psi | 76% | 2933 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 47,471 psi | 78% | 2776 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 49,835 psi | 82% | 2890 fps | 99.6% |
| Winchester StaBALL HD | 69.3 gr | 80% | 31,807 psi | 52% | 2667 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,130 psi | 61% | 2608 fps | 95.7% |
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 68 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Barnes X BT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,110 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,110 fps. ADI AR 2217 gives the best case fill at 100 %, and 68 of the 68 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 180.0 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, 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. Winchester StaBALL HD, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Barnes X BT 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.