Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 174gr | Prvi Partizan FMJ BT bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Norma MRP and Vihtavuori N560.
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% | 52,707 psi | 87% | 2966 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,143 psi | 89% | 3002 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,795 psi | 90% | 3114 fps | 97.6% |
| ADI AR 2209 | <<locked>> | 92% | 54,752 psi | 90% | 3054 fps | 99.2% |
| ADI AR 2213 | <<locked>> | 94% | 52,518 psi | 86% | 3054 fps | 98.1% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,007 psi | 77% | 2940 fps | 97.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,843 psi | 69% | 2900 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 88% | 54,853 psi | 90% | 3058 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,272 psi | 86% | 3018 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,476 psi | 89% | 3045 fps | 99.2% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,402 psi | 86% | 3051 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,534 psi | 88% | 3031 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,750 psi | 87% | 3087 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,548 psi | 88% | 3117 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 51,634 psi | 85% | 3035 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,820 psi | 80% | 3018 fps | 98% |
| Bofors RP5 | <<locked>> | 94% | 52,402 psi | 86% | 3051 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 53,214 psi | 87% | 2943 fps | 99.5% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,924 psi | 85% | 3035 fps | 98.8% |
| Hodgdon H414 | <<locked>> | 84% | 52,199 psi | 86% | 2995 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,911 psi | 90% | 3009 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 52,533 psi | 86% | 2992 fps | 97.5% |
| Hodgdon H4831 SC | <<locked>> | 94% | 55,071 psi | 90% | 3035 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 51,706 psi | 85% | 2927 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,634 psi | 85% | 3153 fps | 99.7% |
| Hodgdon Superformance | <<locked>> | 84% | 52,257 psi | 86% | 3028 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,898 psi | 61% | 1893 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,810 psi | 90% | 2989 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 54,708 psi | 90% | 2972 fps | 99.8% |
| IMR 4831 | <<locked>> | 88% | 54,534 psi | 90% | 2995 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,824 psi | 88% | 2979 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 96% | 53,940 psi | 89% | 3091 fps | 98.4% |
| Lovex S065 | <<locked>> | 84% | 51,982 psi | 85% | 2917 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,461 psi | 88% | 2963 fps | 99.8% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,563 psi | 88% | 2976 fps | 100% |
| Norma 204 | <<locked>> | 86% | 51,866 psi | 85% | 2979 fps | 98.7% |
| Norma 217ᴾ | <<locked>> | 100% | 37,434 psi | 61% | 2818 fps | 96.9% |
| Norma MRP | <<locked>> | 92% | 52,185 psi | 86% | 3074 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 52,692 psi | 87% | 2986 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,621 psi | 90% | 3114 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 88% | 54,984 psi | 90% | 3045 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,837 psi | 87% | 3045 fps | 99.6% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 62% | 1939 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,114 psi | 89% | 3025 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,156 psi | 86% | 3048 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,214 psi | 86% | 3146 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,268 psi | 78% | 3022 fps | 96.2% |
| Rottweil R 903 | <<locked>> | 82% | 54,404 psi | 89% | 2949 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,765 psi | 87% | 2966 fps | 98.1% |
| Rottweil R 905 | <<locked>> | 92% | 53,882 psi | 88% | 3031 fps | 99.2% |
| Rottweil R 907 | <<locked>> | 84% | 53,214 psi | 87% | 2943 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 84% | 51,982 psi | 85% | 2917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,461 psi | 88% | 2963 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,563 psi | 90% | 2822 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,549 psi | 90% | 2920 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,447 psi | 88% | 3028 fps | 99.2% |
| Somchem S355 | <<locked>> | 82% | 54,085 psi | 89% | 2943 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,085 psi | 89% | 2956 fps | 97.7% |
| Somchem S365 | <<locked>> | 88% | 52,852 psi | 87% | 2989 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,404 psi | 89% | 3002 fps | 99.6% |
| Vihtavuori N150 | <<locked>> | 82% | 51,924 psi | 85% | 2864 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,491 psi | 89% | 2976 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 53,969 psi | 89% | 2982 fps | 99.4% |
| Vihtavuori N550 | <<locked>> | 86% | 53,722 psi | 88% | 2982 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,286 psi | 86% | 3005 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,170 psi | 86% | 3068 fps | 97.7% |
| Vihtavuori N565 | <<locked>> | 98% | 51,764 psi | 85% | 3041 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,809 psi | 88% | 2933 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,402 psi | 86% | 2999 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,433 psi | 89% | 3166 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,302 psi | 89% | 2999 fps | 99.1% |
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% | 32,779 psi | 54% | 2559 fps | 96.5% |
| Accurate 4350 | <<locked>> | 80% | 44,106 psi | 72% | 2831 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 44,338 psi | 73% | 2917 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 36,825 psi | 60% | 2690 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 42,989 psi | 71% | 2864 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 96% | 41,249 psi | 68% | 2815 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 92% | 32,372 psi | 53% | 2644 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,206 psi | 69% | 2835 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,689 psi | 80% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,840 psi | 60% | 2690 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 37,347 psi | 61% | 2743 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,444 psi | 52% | 2592 fps | 99.2% |
| Alliant Reloder-25 | <<locked>> | 82% | 29,341 psi | 48% | 2549 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,185 psi | 56% | 2726 fps | 98.4% |
| Bofors RP15 | <<locked>> | 86% | 37,159 psi | 61% | 2736 fps | 95.2% |
| Bofors RP30 | <<locked>> | 94% | 39,798 psi | 65% | 2831 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 37,347 psi | 61% | 2743 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 46,963 psi | 77% | 2831 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 39,421 psi | 65% | 2779 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 45,658 psi | 75% | 2877 fps | 99% |
| Hodgdon H4350 | <<locked>> | 80% | 48,327 psi | 79% | 2894 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 86% | 42,815 psi | 70% | 2805 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 88% | 45,063 psi | 74% | 2851 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,726 psi | 65% | 2717 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 90% | 37,159 psi | 61% | 2818 fps | 96% |
| Hodgdon Superformance | <<locked>> | 80% | 45,150 psi | 74% | 2900 fps | 98.7% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 45% | 1693 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,496 psi | 70% | 2759 fps | 97.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,428 psi | 80% | 2861 fps | 99.2% |
| IMR 4831 | <<locked>> | 80% | 41,945 psi | 69% | 2772 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 44,686 psi | 73% | 2808 fps | 95.8% |
| IMR 7828 SSC | <<locked>> | 88% | 41,205 psi | 68% | 2838 fps | 95.2% |
| Lovex S065 | <<locked>> | 80% | 45,934 psi | 75% | 2808 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 44,193 psi | 73% | 2795 fps | 98.8% |
| Lovex S071 | <<locked>> | 82% | 30,124 psi | 49% | 2487 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,380 psi | 70% | 2795 fps | 96.7% |
| Norma 217 | <<locked>> | 98% | 34,998 psi | 57% | 2756 fps | 95.9% |
| Norma MRP | 70.9 gr | 80% | 34,055 psi | 56% | 2687 fps | 95.7% |
| Norma URP | <<locked>> | 80% | 43,236 psi | 71% | 2815 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 40,973 psi | 67% | 2844 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 42,148 psi | 69% | 2812 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 33,924 psi | 56% | 2651 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,181 psi | 46% | 1732 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,859 psi | 72% | 2848 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,177 psi | 69% | 2864 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 33,910 psi | 56% | 2726 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,714 psi | 72% | 2946 fps | 95% |
| Rottweil R 903 | <<locked>> | 80% | 50,981 psi | 84% | 2897 fps | 100% |
| Rottweil R 904 | <<locked>> | 82% | 40,814 psi | 67% | 2733 fps | 95.2% |
| Rottweil R 905 | <<locked>> | 80% | 35,969 psi | 59% | 2671 fps | 95% |
| Rottweil R 907 | <<locked>> | 80% | 46,963 psi | 77% | 2831 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,934 psi | 75% | 2808 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 44,193 psi | 73% | 2795 fps | 98.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,329 psi | 84% | 2776 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,933 psi | 74% | 2753 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 38,174 psi | 63% | 2723 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 50,923 psi | 84% | 2894 fps | 100% |
| Somchem S361 | <<locked>> | 84% | 44,382 psi | 73% | 2779 fps | 95.5% |
| Somchem S365 | <<locked>> | 80% | 40,147 psi | 66% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,651 psi | 60% | 2654 fps | 96.2% |
| Vihtavuori N150 | <<locked>> | 80% | 48,660 psi | 80% | 2812 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,773 psi | 74% | 2812 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 36,274 psi | 60% | 2641 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 44,019 psi | 72% | 2812 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 35,186 psi | 58% | 2671 fps | 99.1% |
| Vihtavuori N560 | 76.2 gr | 86% | 42,235 psi | 69% | 2871 fps | 95.1% |
| Vihtavuori N565 | <<locked>> | 92% | 42,206 psi | 69% | 2854 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,700 psi | 72% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,847 psi | 75% | 2881 fps | 99% |
| Winchester StaBALL HD | 70.2 gr | 80% | 27,905 psi | 46% | 2598 fps | 99.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 38,377 psi | 63% | 2697 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 77 powders for .300 Lapua Mag. loaded with the .308 | 174gr | Prvi Partizan FMJ BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,166 fps; across all powders the maximum-charge window runs from 1,893 fps to 3,166 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 174.0 gr projectile in 0.308" calls for a 1:12.0 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. Winchester StaBALL HD, Norma MRP, Vihtavuori N560 rank at the top here: for .300 Lapua Mag. with the .308 | 174gr | Prvi Partizan FMJ BT 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 N170 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.