Load Specifications
Load data in caliber .300 Lapua Mag. with .307 | 180gr | Frontier PH HPBT bullet and 72 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>> | 94% | 53,693 psi | 88% | 2933 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 51,517 psi | 85% | 2913 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 55,085 psi | 90% | 3087 fps | 98.9% |
| Accurate MAGPRO | <<locked>> | 92% | 52,141 psi | 86% | 3025 fps | 97.4% |
| ADI AR 2209 | <<locked>> | 90% | 52,228 psi | 86% | 2969 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 94% | 53,621 psi | 88% | 3028 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,906 psi | 79% | 2917 fps | 97.8% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,670 psi | 70% | 2877 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 52,489 psi | 86% | 2966 fps | 99.1% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,475 psi | 86% | 2972 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,316 psi | 88% | 2986 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 51,880 psi | 85% | 2956 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,563 psi | 88% | 3028 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,563 psi | 90% | 2999 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,853 psi | 88% | 3058 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,810 psi | 90% | 3087 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 52,576 psi | 86% | 3009 fps | 99.2% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,734 psi | 82% | 2992 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 53,563 psi | 88% | 3028 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 54,186 psi | 89% | 2917 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,968 psi | 87% | 3012 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 53,142 psi | 87% | 2966 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 52,330 psi | 86% | 2923 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 53,635 psi | 88% | 2966 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,359 psi | 86% | 2946 fps | 97.7% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,663 psi | 86% | 2894 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,750 psi | 87% | 3127 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 53,374 psi | 88% | 3002 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 61% | 1860 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,286 psi | 86% | 2900 fps | 99.6% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,286 psi | 86% | 2887 fps | 99.7% |
| IMR 4831 | <<locked>> | 86% | 52,025 psi | 85% | 2910 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,781 psi | 90% | 2949 fps | 98.3% |
| IMR 7828 SSC | <<locked>> | 96% | 54,969 psi | 90% | 3064 fps | 98.8% |
| Lovex S065 | <<locked>> | 84% | 52,721 psi | 87% | 2884 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,331 psi | 89% | 2933 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,752 psi | 90% | 2949 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,823 psi | 87% | 2953 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 38,305 psi | 63% | 2802 fps | 97.6% |
| Norma MRP | <<locked>> | 92% | 53,229 psi | 87% | 3048 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 53,621 psi | 88% | 2953 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 51,706 psi | 85% | 3022 fps | 98.7% |
| Ramshot Hunter | <<locked>> | 86% | 52,373 psi | 86% | 2956 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,882 psi | 88% | 3015 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 62% | 1903 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 55,013 psi | 90% | 2992 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,272 psi | 87% | 3022 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,476 psi | 88% | 3127 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 48,269 psi | 79% | 3002 fps | 96.8% |
| Rottweil R 904 | <<locked>> | 90% | 53,476 psi | 88% | 2936 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 92% | 54,752 psi | 90% | 3002 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 54,186 psi | 89% | 2917 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,721 psi | 87% | 2884 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,331 psi | 89% | 2933 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 51,909 psi | 85% | 2835 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,360 psi | 89% | 2999 fps | 99.4% |
| Somchem S355 | <<locked>> | 82% | 55,071 psi | 90% | 2910 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 55,114 psi | 90% | 2930 fps | 98.1% |
| Somchem S365 | <<locked>> | 88% | 53,737 psi | 88% | 2953 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 51,793 psi | 85% | 2917 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 52,663 psi | 86% | 2828 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 51,924 psi | 85% | 2890 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,897 psi | 90% | 2953 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 54,491 psi | 89% | 2949 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 53,417 psi | 88% | 2976 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,156 psi | 87% | 3041 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 52,866 psi | 87% | 3018 fps | 98.3% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,574 psi | 81% | 3009 fps | 96.5% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,882 psi | 90% | 2900 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,345 psi | 88% | 2969 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,692 psi | 85% | 3077 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 51,634 psi | 85% | 2910 fps | 99% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 33,446 psi | 55% | 2539 fps | 97.2% |
| Accurate 4350 | <<locked>> | 80% | 44,889 psi | 74% | 2802 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 38,783 psi | 64% | 2766 fps | 95.1% |
| Accurate MAGPRO | <<locked>> | 88% | 45,208 psi | 74% | 2894 fps | 95.7% |
| ADI AR 2209 | <<locked>> | 80% | 37,434 psi | 61% | 2667 fps | 95.7% |
| ADI AR 2213 | <<locked>> | 86% | 40,814 psi | 67% | 2776 fps | 95.4% |
| ADI AR 2217 | <<locked>> | 94% | 39,247 psi | 64% | 2733 fps | 95.1% |
| ADI AR 2225 | <<locked>> | 92% | 32,953 psi | 54% | 2631 fps | 96% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,811 psi | 62% | 2671 fps | 95.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,902 psi | 70% | 2805 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,632 psi | 81% | 2927 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,463 psi | 62% | 2664 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,607 psi | 58% | 2661 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,010 psi | 53% | 2569 fps | 99.5% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,978 psi | 46% | 2470 fps | 95.3% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,983 psi | 57% | 2710 fps | 98.9% |
| Bofors RP15 | <<locked>> | 84% | 35,462 psi | 58% | 2657 fps | 95% |
| Bofors RP30 | <<locked>> | 92% | 37,942 psi | 62% | 2749 fps | 95.3% |
| Bofors RP5 | <<locked>> | 82% | 35,607 psi | 58% | 2661 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 47,819 psi | 79% | 2805 fps | 99.1% |
| Hodgdon H1000 | <<locked>> | 90% | 37,652 psi | 62% | 2697 fps | 95.2% |
| Hodgdon H414 | <<locked>> | 80% | 46,615 psi | 77% | 2851 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 49,066 psi | 81% | 2864 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 86% | 43,656 psi | 72% | 2782 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,801 psi | 70% | 2766 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,553 psi | 67% | 2687 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 35,418 psi | 58% | 2733 fps | 95.7% |
| Hodgdon Superformance | <<locked>> | 80% | 45,934 psi | 75% | 2871 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 45% | 1663 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,120 psi | 71% | 2733 fps | 98.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,081 psi | 81% | 2828 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,815 psi | 70% | 2746 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,641 psi | 70% | 2726 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 86% | 39,305 psi | 65% | 2753 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 46,586 psi | 76% | 2779 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 45,005 psi | 74% | 2769 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,776 psi | 47% | 2415 fps | 95.2% |
| Norma 204 | <<locked>> | 80% | 43,120 psi | 71% | 2769 fps | 97.3% |
| Norma 217 | <<locked>> | 96% | 33,446 psi | 55% | 2674 fps | 95.7% |
| Norma MRP | <<locked>> | 80% | 34,751 psi | 57% | 2671 fps | 96.5% |
| Norma URP | <<locked>> | 80% | 44,121 psi | 72% | 2789 fps | 99.9% |
| Ramshot Grand | <<locked>> | 86% | 38,928 psi | 64% | 2759 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 42,902 psi | 70% | 2782 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 34,708 psi | 57% | 2635 fps | 95.8% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,253 psi | 46% | 1703 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,715 psi | 73% | 2822 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,018 psi | 71% | 2838 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 32,387 psi | 53% | 2644 fps | 95.5% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 44,817 psi | 74% | 2930 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 82% | 41,452 psi | 68% | 2707 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 36,782 psi | 60% | 2651 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 47,819 psi | 79% | 2805 fps | 99.1% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,586 psi | 76% | 2779 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 45,005 psi | 74% | 2769 fps | 99.2% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,600 psi | 75% | 2723 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,463 psi | 60% | 2644 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 51,634 psi | 85% | 2858 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 42,250 psi | 69% | 2697 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 40,930 psi | 67% | 2740 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,333 psi | 61% | 2631 fps | 96.8% |
| Vihtavuori N150 | <<locked>> | 80% | 49,530 psi | 81% | 2782 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,469 psi | 75% | 2782 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,563 psi | 57% | 2562 fps | 95.5% |
| Vihtavuori N550 | <<locked>> | 80% | 44,933 psi | 74% | 2785 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 80% | 36,027 psi | 59% | 2648 fps | 99.5% |
| Vihtavuori N560 | <<locked>> | 86% | 43,134 psi | 71% | 2848 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 90% | 40,306 psi | 66% | 2772 fps | 95.2% |
| Vihtavuori N568 | <<locked>> | 98% | 46,137 psi | 76% | 2943 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,469 psi | 73% | 2740 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,615 psi | 77% | 2851 fps | 99.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 28,485 psi | 47% | 2582 fps | 99.6% |
| Winchester Supreme 780 | <<locked>> | 82% | 36,550 psi | 60% | 2615 fps | 95.5% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 72 powders for .300 Lapua Mag. loaded with the .307 | 180gr | Frontier PH HPBT. Hodgdon Retumbo delivers the highest muzzle velocity at 3,127 fps; across all powders the maximum-charge window runs from 1,860 fps to 3,127 fps. ADI AR 2217 gives the best case fill at 100 %, and 72 of the 72 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 0.307" calls for a 1:11.0 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.