Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 175gr | Atomic 29 HP bullet and 75 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country and Winchester StaBALL HD.
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>> | 96% | 54,447 psi | 89% | 2986 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 52,359 psi | 86% | 2972 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 52,257 psi | 86% | 3081 fps | 98.3% |
| Accurate MAGPRO | <<locked>> | 94% | 53,156 psi | 87% | 3081 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 82% | 54,331 psi | 89% | 2940 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,476 psi | 88% | 3028 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 96% | 54,940 psi | 90% | 3091 fps | 98.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 45,600 psi | 75% | 2907 fps | 96.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 40,393 psi | 66% | 2861 fps | 98.5% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 53,664 psi | 88% | 3022 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,476 psi | 88% | 3035 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,491 psi | 89% | 3048 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 52,953 psi | 87% | 3015 fps | 99% |
| Alliant Reloder-22 | <<locked>> | 96% | 54,578 psi | 90% | 3084 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 96% | 51,808 psi | 85% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,198 psi | 84% | 3054 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 51,721 psi | 85% | 3084 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 53,548 psi | 88% | 3064 fps | 99.1% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,152 psi | 77% | 2982 fps | 97.7% |
| Bofors RP5 | <<locked>> | 96% | 54,578 psi | 90% | 3084 fps | 99.3% |
| Bofors RP7 | <<locked>> | 84% | 52,025 psi | 85% | 2920 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,502 psi | 83% | 3005 fps | 98.5% |
| Hodgdon H414 | <<locked>> | 86% | 54,491 psi | 89% | 3028 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 84% | 53,635 psi | 88% | 2982 fps | 99.2% |
| Hodgdon H4831 | <<locked>> | 94% | 54,926 psi | 90% | 3025 fps | 97.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 53,853 psi | 88% | 3009 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 53,838 psi | 88% | 2953 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,111 psi | 82% | 3117 fps | 99.5% |
| Hodgdon Superformance | <<locked>> | 86% | 54,708 psi | 90% | 3064 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,782 psi | 60% | 1883 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,345 psi | 88% | 2959 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,519 psi | 88% | 2946 fps | 99.7% |
| IMR 4831 | <<locked>> | 88% | 52,997 psi | 87% | 2966 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 52,663 psi | 86% | 2953 fps | 97.6% |
| IMR 7828 SSC | <<locked>> | 96% | 52,446 psi | 86% | 3061 fps | 98.2% |
| Lovex S065 | <<locked>> | 86% | 53,911 psi | 89% | 2943 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,025 psi | 85% | 2936 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 51,808 psi | 85% | 2946 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,288 psi | 89% | 3015 fps | 99% |
| Norma 217ᴾ | <<locked>> | 100% | 35,810 psi | 59% | 2772 fps | 96.3% |
| Norma MRP | <<locked>> | 94% | 54,346 psi | 89% | 3107 fps | 99.9% |
| Norma URP | <<locked>> | 88% | 54,592 psi | 90% | 3012 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 52,982 psi | 87% | 3081 fps | 98.6% |
| Ramshot Hunter | <<locked>> | 88% | 53,664 psi | 88% | 3018 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 51,213 psi | 84% | 3012 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,420 psi | 61% | 1926 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,070 psi | 89% | 3035 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 52,344 psi | 86% | 2995 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,636 psi | 90% | 3084 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 50,633 psi | 83% | 3114 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 52,750 psi | 87% | 2923 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 54,824 psi | 90% | 2999 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 52,257 psi | 86% | 3002 fps | 99% |
| Rottweil R 907 | <<locked>> | 84% | 52,025 psi | 85% | 2920 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 86% | 53,911 psi | 89% | 2943 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,025 psi | 85% | 2936 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,433 psi | 89% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,243 psi | 87% | 2799 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,171 psi | 87% | 2894 fps | 99.7% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 51,822 psi | 85% | 2995 fps | 99% |
| Somchem S355 | <<locked>> | 82% | 52,750 psi | 87% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 52,881 psi | 87% | 2930 fps | 97.5% |
| Somchem S365 | <<locked>> | 90% | 54,723 psi | 90% | 3012 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 52,924 psi | 87% | 2976 fps | 99.5% |
| Vihtavuori N150 | <<locked>> | 84% | 53,969 psi | 89% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,069 psi | 87% | 2949 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,402 psi | 86% | 2953 fps | 99.3% |
| Vihtavuori N550 | <<locked>> | 86% | 52,127 psi | 86% | 2953 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,143 psi | 89% | 3028 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,375 psi | 89% | 3100 fps | 98.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 53,751 psi | 88% | 3074 fps | 98.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 52,576 psi | 86% | 2910 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,491 psi | 89% | 3028 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 52,547 psi | 86% | 3136 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,765 psi | 87% | 2969 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 3100 | <<locked>> | 80% | 31,140 psi | 51% | 2516 fps | 95.9% |
| Accurate 4350 | <<locked>> | 80% | 42,351 psi | 70% | 2795 fps | 99.8% |
| Accurate High Country | 75.6 gr | 86% | 42,134 psi | 69% | 2881 fps | 95.9% |
| Accurate MAGPRO | <<locked>> | 90% | 45,963 psi | 75% | 2946 fps | 95.6% |
| ADI AR 2208 | <<locked>> | 80% | 50,908 psi | 84% | 2884 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,101 psi | 63% | 2720 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 88% | 41,742 psi | 69% | 2831 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 98% | 42,714 psi | 70% | 2844 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 94% | 33,127 psi | 54% | 2667 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,435 psi | 63% | 2723 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,017 psi | 67% | 2808 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,224 psi | 78% | 2930 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,058 psi | 62% | 2717 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 86% | 38,696 psi | 64% | 2772 fps | 96% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,023 psi | 49% | 2552 fps | 98.8% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,008 psi | 49% | 2569 fps | 96% |
| Alliant Reloder-26 | 72.5 gr | 80% | 32,677 psi | 54% | 2684 fps | 98% |
| Bofors RP15 | <<locked>> | 88% | 38,189 psi | 63% | 2759 fps | 95.7% |
| Bofors RP30 | <<locked>> | 94% | 38,159 psi | 63% | 2789 fps | 95% |
| Bofors RP5 | <<locked>> | 86% | 38,696 psi | 64% | 2772 fps | 96% |
| Bofors RP7 | <<locked>> | 80% | 45,774 psi | 75% | 2805 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 92% | 38,232 psi | 63% | 2746 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 44,425 psi | 73% | 2851 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 80% | 47,050 psi | 77% | 2864 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 44,541 psi | 73% | 2838 fps | 95.5% |
| Hodgdon H4831 SC | <<locked>> | 88% | 43,801 psi | 72% | 2822 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 38,450 psi | 63% | 2687 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 35,694 psi | 59% | 2776 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 43,613 psi | 72% | 2867 fps | 98.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,441 psi | 45% | 1683 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,234 psi | 68% | 2730 fps | 97.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,210 psi | 78% | 2835 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 40,582 psi | 67% | 2743 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,511 psi | 71% | 2779 fps | 95.4% |
| IMR 7828 SSC | <<locked>> | 90% | 42,772 psi | 70% | 2871 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 44,527 psi | 73% | 2779 fps | 99.5% |
| Lovex S070 | <<locked>> | 80% | 42,888 psi | 70% | 2766 fps | 98.6% |
| Lovex S071 | <<locked>> | 84% | 30,487 psi | 50% | 2500 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 41,089 psi | 67% | 2766 fps | 96.4% |
| Norma 217 | <<locked>> | 98% | 33,417 psi | 55% | 2707 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 32,634 psi | 54% | 2648 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 41,945 psi | 69% | 2785 fps | 99.7% |
| Ramshot Grand | <<locked>> | 88% | 39,479 psi | 65% | 2805 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 40,770 psi | 67% | 2779 fps | 98.7% |
| Ramshot Magnum | <<locked>> | 88% | 35,114 psi | 58% | 2677 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,079 psi | 46% | 1726 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,169 psi | 82% | 2979 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 42,322 psi | 69% | 2815 fps | 99.7% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 40,828 psi | 67% | 2831 fps | 99.5% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 32,605 psi | 54% | 2684 fps | 95.1% |
| Rottweil R 903 | <<locked>> | 80% | 49,501 psi | 81% | 2867 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,322 psi | 69% | 2762 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 82% | 37,275 psi | 61% | 2697 fps | 95.5% |
| Rottweil R 907 | <<locked>> | 80% | 45,774 psi | 75% | 2805 fps | 98.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 44,527 psi | 73% | 2779 fps | 99.5% |
| Shooters World SW4350 | <<locked>> | 80% | 42,888 psi | 70% | 2766 fps | 98.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 50,966 psi | 84% | 2930 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,009 psi | 82% | 2749 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 43,714 psi | 72% | 2726 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 36,941 psi | 61% | 2694 fps | 95.4% |
| Somchem S355 | <<locked>> | 80% | 49,414 psi | 81% | 2864 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 43,134 psi | 71% | 2749 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 38,580 psi | 63% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,201 psi | 58% | 2618 fps | 95.7% |
| Vihtavuori N150 | <<locked>> | 80% | 47,384 psi | 78% | 2789 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,337 psi | 71% | 2782 fps | 99.8% |
| Vihtavuori N165 | <<locked>> | 84% | 34,925 psi | 57% | 2605 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 42,743 psi | 70% | 2782 fps | 99.7% |
| Vihtavuori N555 | <<locked>> | 80% | 33,663 psi | 55% | 2631 fps | 98.8% |
| Vihtavuori N560 | <<locked>> | 88% | 43,947 psi | 72% | 2904 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 94% | 43,569 psi | 72% | 2884 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 42,395 psi | 70% | 2743 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 44,425 psi | 73% | 2851 fps | 98.8% |
| Winchester StaBALL HD | 69.6 gr | 80% | 26,527 psi | 44% | 2546 fps | 98.7% |
| Winchester Supreme 780 | <<locked>> | 84% | 37,057 psi | 61% | 2661 fps | 95.3% |
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 | 175gr | Atomic 29 HP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,136 fps; across all powders the maximum-charge window runs from 1,883 fps to 3,136 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 59–90 %, leaving at least 10 % headroom. The 175.0 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, 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, Accurate High Country, Winchester StaBALL HD rank at the top here: for .300 Lapua Mag. with the .308 | 175gr | Atomic 29 HP 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.