Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 170gr | Speer Deep Curl Flat Points bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Accurate MAGPRO and Alliant Reloder-26.
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% | 54,592 psi | 90% | 2959 fps | 99.5% |
| Accurate 3100 | <<locked>> | 94% | 53,751 psi | 88% | 3018 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 51,445 psi | 84% | 2999 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 52,939 psi | 87% | 3110 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 90% | 52,359 psi | 86% | 3051 fps | 98.9% |
| ADI AR 2213 | <<locked>> | 94% | 53,621 psi | 88% | 3110 fps | 98.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,051 psi | 79% | 2995 fps | 97.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,714 psi | 70% | 2953 fps | 99% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,359 psi | 86% | 3058 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,330 psi | 88% | 3071 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 51,967 psi | 85% | 3041 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,548 psi | 88% | 3110 fps | 99.2% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,636 psi | 90% | 3084 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,969 psi | 89% | 3143 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,998 psi | 90% | 3176 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 52,562 psi | 86% | 3087 fps | 99% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,067 psi | 82% | 3074 fps | 98.2% |
| Bofors RP5 | <<locked>> | 94% | 53,548 psi | 88% | 3110 fps | 99.2% |
| Bofors RP7 | <<locked>> | 84% | 53,998 psi | 89% | 2999 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 49,342 psi | 81% | 3025 fps | 98.3% |
| Hodgdon H414 | <<locked>> | 82% | 54,085 psi | 89% | 3064 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 86% | 54,418 psi | 89% | 3041 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 53,113 psi | 87% | 3038 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,504 psi | 86% | 3028 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,707 psi | 87% | 2979 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,765 psi | 87% | 3212 fps | 99.8% |
| Hodgdon Superformance | <<locked>> | 84% | 53,287 psi | 87% | 3084 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 61% | 1929 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 53,751 psi | 88% | 2972 fps | 99.7% |
| IMR 4350 | <<locked>> | 86% | 52,286 psi | 86% | 2986 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,185 psi | 86% | 2966 fps | 99.6% |
| IMR 4831 | <<locked>> | 90% | 53,200 psi | 87% | 3009 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,781 psi | 90% | 3031 fps | 98% |
| IMR 7828 SSC | <<locked>> | 92% | 51,561 psi | 85% | 3084 fps | 98% |
| Lovex S065 | <<locked>> | 84% | 52,779 psi | 87% | 2969 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,172 psi | 89% | 3015 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,781 psi | 90% | 3031 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,794 psi | 87% | 3031 fps | 98.8% |
| Norma 217ᴾ | <<locked>> | 100% | 38,305 psi | 63% | 2871 fps | 97.2% |
| Norma MRP | <<locked>> | 92% | 53,388 psi | 88% | 3133 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 53,476 psi | 88% | 3035 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 51,140 psi | 84% | 3091 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 86% | 52,373 psi | 86% | 3038 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 94% | 52,170 psi | 86% | 3068 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,811 psi | 62% | 1975 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,100 psi | 90% | 3077 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,330 psi | 88% | 3107 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,679 psi | 88% | 3209 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,414 psi | 79% | 3077 fps | 96.4% |
| Rottweil R 904 | <<locked>> | 90% | 53,664 psi | 88% | 3022 fps | 98.3% |
| Rottweil R 905 | <<locked>> | 92% | 54,824 psi | 90% | 3087 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 53,998 psi | 89% | 2999 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,779 psi | 87% | 2969 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,172 psi | 89% | 3015 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 51,982 psi | 85% | 2917 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,389 psi | 89% | 3081 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 55,027 psi | 90% | 2995 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,071 psi | 90% | 3009 fps | 97.9% |
| Somchem S365 | <<locked>> | 88% | 53,795 psi | 88% | 3038 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 51,866 psi | 85% | 2999 fps | 99.4% |
| Unknown powder | <<locked>> | 84% | 53,751 psi | 88% | 3038 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 53,490 psi | 88% | 2930 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,027 psi | 89% | 3002 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,997 psi | 87% | 3002 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 84% | 54,592 psi | 90% | 3054 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,505 psi | 88% | 3061 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 53,824 psi | 88% | 3133 fps | 98% |
| Vihtavuori N565 | <<locked>> | 98% | 53,098 psi | 87% | 3100 fps | 98.1% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,748 psi | 82% | 3087 fps | 96.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,810 psi | 90% | 2986 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 54,085 psi | 89% | 3064 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,851 psi | 85% | 3163 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 53,098 psi | 87% | 3015 fps | 99% |
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% | 51,198 psi | 84% | 2904 fps | 99.2% |
| Accurate 3100 | <<locked>> | 80% | 33,417 psi | 55% | 2605 fps | 96.7% |
| Accurate 4350 | <<locked>> | 80% | 44,860 psi | 74% | 2881 fps | 99.9% |
| Accurate MAGPRO | 85.9 gr | 92% | 49,269 psi | 81% | 3041 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 37,420 psi | 61% | 2740 fps | 95.2% |
| ADI AR 2213 | <<locked>> | 88% | 43,772 psi | 72% | 2917 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 96% | 41,989 psi | 69% | 2867 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 92% | 33,040 psi | 54% | 2697 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,975 psi | 71% | 2887 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,545 psi | 81% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,449 psi | 61% | 2736 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 84% | 38,145 psi | 63% | 2795 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,068 psi | 53% | 2638 fps | 99.3% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,907 psi | 49% | 2595 fps | 95.8% |
| Alliant Reloder-26 | 75.6 gr | 80% | 34,969 psi | 57% | 2779 fps | 98.6% |
| Bofors RP15 | <<locked>> | 86% | 37,811 psi | 62% | 2782 fps | 95.4% |
| Bofors RP30 | <<locked>> | 94% | 40,669 psi | 67% | 2884 fps | 95.8% |
| Bofors RP5 | <<locked>> | 84% | 38,145 psi | 63% | 2795 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 47,688 psi | 78% | 2884 fps | 98.8% |
| Hodgdon H1000 | <<locked>> | 94% | 40,364 psi | 66% | 2835 fps | 95.8% |
| Hodgdon H414 | <<locked>> | 80% | 50,415 psi | 83% | 3002 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 45,179 psi | 74% | 2867 fps | 97.8% |
| Hodgdon H4831 | <<locked>> | 90% | 43,540 psi | 71% | 2858 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,934 psi | 75% | 2907 fps | 95.9% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,538 psi | 67% | 2766 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,418 psi | 58% | 2802 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 45,919 psi | 75% | 2949 fps | 98.8% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 45% | 1726 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 50,560 psi | 83% | 2917 fps | 99.5% |
| IMR 4350 | <<locked>> | 80% | 43,134 psi | 71% | 2812 fps | 98% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,095 psi | 81% | 2913 fps | 99.3% |
| IMR 4831 | <<locked>> | 80% | 38,783 psi | 64% | 2740 fps | 99.4% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,569 psi | 70% | 2799 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 41,887 psi | 69% | 2887 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 46,673 psi | 77% | 2861 fps | 99.7% |
| Lovex S070 | <<locked>> | 80% | 44,875 psi | 74% | 2844 fps | 98.9% |
| Lovex S071 | <<locked>> | 82% | 30,647 psi | 50% | 2533 fps | 95.5% |
| Norma 204 | <<locked>> | 80% | 43,105 psi | 71% | 2848 fps | 96.9% |
| Norma 217 | <<locked>> | 96% | 33,605 psi | 55% | 2743 fps | 95.1% |
| Norma MRP | <<locked>> | 80% | 34,853 psi | 57% | 2740 fps | 96% |
| Norma URP | <<locked>> | 80% | 43,976 psi | 72% | 2864 fps | 99.9% |
| Ramshot Grand | <<locked>> | 84% | 40,814 psi | 67% | 2874 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 42,902 psi | 70% | 2861 fps | 99% |
| Ramshot Magnum | <<locked>> | 84% | 35,563 psi | 58% | 2723 fps | 95.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,224 psi | 46% | 1765 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,846 psi | 74% | 2900 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,004 psi | 71% | 2917 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 34,708 psi | 57% | 2779 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,904 psi | 74% | 3005 fps | 95.4% |
| Rottweil R 904 | <<locked>> | 82% | 41,379 psi | 68% | 2779 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 36,782 psi | 60% | 2720 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 47,688 psi | 78% | 2884 fps | 98.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,673 psi | 77% | 2861 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 80% | 44,875 psi | 74% | 2844 fps | 98.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,556 psi | 75% | 2802 fps | 98.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,463 psi | 60% | 2713 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 51,706 psi | 85% | 2943 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 45,136 psi | 74% | 2828 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 40,930 psi | 67% | 2822 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,405 psi | 61% | 2707 fps | 96.4% |
| Unknown powder | <<locked>> | 80% | 47,137 psi | 77% | 2923 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 80% | 44,411 psi | 73% | 2779 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,253 psi | 78% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 84% | 35,781 psi | 59% | 2661 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 47,877 psi | 79% | 2940 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,897 psi | 59% | 2720 fps | 99.2% |
| Vihtavuori N560 | <<locked>> | 88% | 43,816 psi | 72% | 2940 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 92% | 43,134 psi | 71% | 2907 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 98% | 46,195 psi | 76% | 3015 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,483 psi | 73% | 2818 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 50,415 psi | 83% | 3002 fps | 99.5% |
| Winchester StaBALL HD | 72.6 gr | 80% | 28,471 psi | 47% | 2644 fps | 99.3% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,043 psi | 61% | 2697 fps | 95.2% |
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 77 powders for .300 Lapua Mag. loaded with the .308 | 170gr | Speer Deep Curl Flat Points. Hodgdon Retumbo delivers the highest muzzle velocity at 3,212 fps; across all powders the maximum-charge window runs from 1,929 fps to 3,212 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 170.0 gr projectile in 0.308" calls for a 1:14.5 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. Winchester StaBALL HD, Accurate MAGPRO, Alliant Reloder-26 rank at the top here: for .300 Lapua Mag. with the .308 | 170gr | Speer Deep Curl Flat Points they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 8133 Enduron, Vihtavuori N570 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.