Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 165gr | Woodleigh PP SN bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Bofors RP5, Bofors RP15 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 2700 | <<locked>> | 82% | 54,143 psi | 89% | 2992 fps | 99.4% |
| Accurate 3100 | <<locked>> | 94% | 53,171 psi | 87% | 2985 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 54,549 psi | 90% | 3091 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,489 psi | 86% | 3140 fps | 96.2% |
| ADI AR 2209 | <<locked>> | 90% | 51,764 psi | 85% | 3017 fps | 98.1% |
| ADI AR 2213 | <<locked>> | 94% | 53,055 psi | 87% | 3072 fps | 97.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,659 psi | 78% | 2958 fps | 96.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,656 psi | 70% | 2909 fps | 98% |
| Alliant Reloder-16 | <<locked>> | 86% | 51,866 psi | 85% | 3032 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,750 psi | 87% | 3043 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 55,042 psi | 90% | 3068 fps | 98.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,982 psi | 87% | 3070 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,273 psi | 89% | 3058 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,201 psi | 89% | 3109 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,433 psi | 89% | 3140 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 52,214 psi | 86% | 3123 fps | 98.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,908 psi | 84% | 3034 fps | 97.2% |
| Bofors RP5 | <<locked>> | 94% | 52,982 psi | 87% | 3140 fps | 99% |
| Bofors RP7 | <<locked>> | 84% | 53,606 psi | 88% | 2971 fps | 99.1% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 48,921 psi | 80% | 3054 fps | 98% |
| Hodgdon H414 | <<locked>> | 82% | 53,722 psi | 88% | 3037 fps | 99.4% |
| Hodgdon H4350 | <<locked>> | 86% | 53,954 psi | 89% | 3077 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 96% | 52,591 psi | 86% | 3004 fps | 96.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,996 psi | 85% | 2993 fps | 96.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,156 psi | 86% | 2955 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,431 psi | 86% | 3245 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 52,968 psi | 87% | 3053 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,913 psi | 62% | 1930 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 54,839 psi | 90% | 3025 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,490 psi | 88% | 2950 fps | 99.4% |
| IMR 4350 | <<locked>> | 86% | 51,808 psi | 85% | 3018 fps | 99.3% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,056 psi | 90% | 3058 fps | 99.7% |
| IMR 4831 | <<locked>> | 90% | 52,866 psi | 87% | 2988 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,389 psi | 89% | 3064 fps | 97.7% |
| IMR 7828 SSC | <<locked>> | 94% | 54,868 psi | 90% | 3116 fps | 97.8% |
| Lovex S065 | <<locked>> | 84% | 52,402 psi | 86% | 2944 fps | 99.8% |
| Lovex S070 | <<locked>> | 86% | 53,925 psi | 89% | 2990 fps | 99.5% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,505 psi | 89% | 3001 fps | 99.8% |
| Norma 204 | <<locked>> | 86% | 52,446 psi | 86% | 3002 fps | 98.1% |
| Norma MRP | <<locked>> | 92% | 52,750 psi | 87% | 3094 fps | 99.4% |
| Norma URP | <<locked>> | 86% | 53,200 psi | 87% | 3013 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,694 psi | 90% | 3123 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 86% | 51,982 psi | 85% | 3008 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 94% | 51,561 psi | 85% | 3030 fps | 98.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,870 psi | 64% | 1975 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,636 psi | 90% | 3052 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,808 psi | 87% | 3075 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,838 psi | 88% | 3168 fps | 99.8% |
| Rottweil R 903 | <<locked>> | 82% | 54,940 psi | 90% | 2983 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,127 psi | 87% | 2987 fps | 97.4% |
| Rottweil R 905 | <<locked>> | 92% | 54,346 psi | 89% | 3053 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 84% | 53,606 psi | 88% | 2971 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,402 psi | 86% | 2944 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 86% | 53,925 psi | 89% | 3054 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,911 psi | 90% | 2856 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 55,027 psi | 90% | 2949 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,911 psi | 89% | 3114 fps | 99.1% |
| Somchem S355 | <<locked>> | 82% | 54,636 psi | 90% | 2977 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,737 psi | 90% | 2981 fps | 97% |
| Somchem S365 | <<locked>> | 88% | 53,374 psi | 88% | 3018 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,868 psi | 90% | 3028 fps | 99.2% |
| Unknown powder | <<locked>> | 84% | 53,287 psi | 87% | 3011 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,127 psi | 87% | 2912 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,708 psi | 88% | 2981 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,634 psi | 86% | 2976 fps | 98.7% |
| Vihtavuori N550 | <<locked>> | 84% | 54,302 psi | 89% | 3030 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,026 psi | 87% | 3030 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,403 psi | 88% | 3100 fps | 97% |
| Vihtavuori N565 | <<locked>> | 98% | 53,432 psi | 88% | 3061 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,375 psi | 89% | 2962 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 53,722 psi | 88% | 3037 fps | 99.4% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,242 psi | 84% | 3130 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 52,533 psi | 86% | 2982 fps | 98.2% |
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 2700 | <<locked>> | 80% | 50,807 psi | 83% | 2936 fps | 99% |
| Accurate 3100 | <<locked>> | 80% | 33,098 psi | 54% | 2570 fps | 95.4% |
| Accurate 4350 | <<locked>> | 80% | 44,498 psi | 73% | 2913 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 92% | 48,849 psi | 80% | 3071 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 84% | 42,380 psi | 70% | 2828 fps | 95.8% |
| ADI AR 2213 | <<locked>> | 90% | 46,325 psi | 76% | 2941 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 98% | 45,353 psi | 74% | 2893 fps | 95.3% |
| ADI AR 2225 | <<locked>> | 96% | 37,231 psi | 61% | 2777 fps | 96% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,540 psi | 70% | 2855 fps | 99.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,226 psi | 81% | 2984 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 42,308 psi | 69% | 2821 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 86% | 40,393 psi | 66% | 2816 fps | 95.3% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,691 psi | 52% | 2599 fps | 98.4% |
| Alliant Reloder-25 | <<locked>> | 84% | 31,560 psi | 52% | 2611 fps | 95.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,534 psi | 57% | 2730 fps | 97.4% |
| Bofors RP15 | 77.5 gr | 88% | 40,030 psi | 66% | 2874 fps | 95.9% |
| Bofors RP30 | <<locked>> | 96% | 43,076 psi | 71% | 2902 fps | 95.3% |
| Bofors RP5 | 75.6 gr | 84% | 37,739 psi | 62% | 2822 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 47,427 psi | 78% | 2857 fps | 98.1% |
| Hodgdon H1000 | <<locked>> | 94% | 40,001 psi | 66% | 2861 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 50,140 psi | 82% | 2974 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 44,730 psi | 73% | 2897 fps | 97.5% |
| Hodgdon H4831 | <<locked>> | 94% | 49,356 psi | 81% | 2943 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 90% | 48,602 psi | 80% | 2930 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,089 psi | 66% | 2736 fps | 99.9% |
| Hodgdon Retumbo | 80.6 gr | 90% | 37,521 psi | 62% | 2897 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 45,556 psi | 75% | 2914 fps | 98% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 45% | 1726 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 51,547 psi | 85% | 2976 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,183 psi | 82% | 2891 fps | 99% |
| IMR 4350 | <<locked>> | 80% | 42,844 psi | 70% | 2841 fps | 97.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,646 psi | 80% | 2946 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 38,377 psi | 63% | 2704 fps | 98.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 45,034 psi | 74% | 2887 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 88% | 44,512 psi | 73% | 2914 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,238 psi | 76% | 2831 fps | 99.2% |
| Lovex S070 | <<locked>> | 80% | 44,585 psi | 73% | 2815 fps | 98.2% |
| Lovex S071 | <<locked>> | 84% | 32,474 psi | 53% | 2553 fps | 95.1% |
| Norma 204 | <<locked>> | 80% | 42,743 psi | 70% | 2813 fps | 95.7% |
| Norma MRP | <<locked>> | 82% | 36,912 psi | 61% | 2760 fps | 95.5% |
| Norma URP | <<locked>> | 80% | 43,671 psi | 72% | 2835 fps | 99.5% |
| Ramshot Grand | <<locked>> | 86% | 43,497 psi | 71% | 2904 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 42,511 psi | 70% | 2825 fps | 98.2% |
| Ramshot Magnum | <<locked>> | 86% | 37,884 psi | 62% | 2748 fps | 95.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,282 psi | 46% | 1769 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,382 psi | 73% | 2866 fps | 99.5% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,569 psi | 70% | 2877 fps | 99.2% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 36,970 psi | 61% | 2801 fps | 95.7% |
| Rottweil R 903 | <<locked>> | 80% | 51,430 psi | 84% | 2928 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 43,918 psi | 72% | 2809 fps | 95% |
| Rottweil R 905 | <<locked>> | 84% | 41,713 psi | 68% | 2807 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 47,427 psi | 78% | 2857 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,238 psi | 76% | 2831 fps | 99.2% |
| Shooters World SW4350 | <<locked>> | 80% | 44,585 psi | 73% | 2881 fps | 98.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,576 psi | 85% | 2808 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,237 psi | 74% | 2775 fps | 98.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,609 psi | 63% | 2805 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 51,256 psi | 84% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 47,906 psi | 79% | 2858 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 40,582 psi | 67% | 2791 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,941 psi | 61% | 2666 fps | 95.1% |
| Unknown powder | <<locked>> | 80% | 46,818 psi | 77% | 2895 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 80% | 44,019 psi | 72% | 2757 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,833 psi | 77% | 2863 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 86% | 37,942 psi | 62% | 2683 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 47,500 psi | 78% | 2909 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,621 psi | 58% | 2682 fps | 98.4% |
| Vihtavuori N560 | <<locked>> | 90% | 46,470 psi | 76% | 2964 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 94% | 45,788 psi | 75% | 2930 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,193 psi | 73% | 2794 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,140 psi | 82% | 2974 fps | 99% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,181 psi | 46% | 2591 fps | 98.1% |
| Winchester Supreme 780 | <<locked>> | 84% | 42,424 psi | 70% | 2788 fps | 95.9% |
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 78 powders for .300 Lapua Mag. loaded with the .308 | 165gr | Woodleigh PP SN. Hodgdon Retumbo delivers the highest muzzle velocity at 3,245 fps; across all powders the maximum-charge window runs from 1,930 fps to 3,245 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 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 165.0 gr projectile in 0.308" calls for a 1:15.5 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. Bofors RP5, Bofors RP15, Hodgdon Retumbo rank at the top here: for .300 Lapua Mag. with the .308 | 165gr | Woodleigh PP SN they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Baschieri & Pellagri 109, IMR 8133 Enduron, Vihtavuori N568 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.