Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Swift A-Frame bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Hodgdon Retumbo and ReloadSwiss RS 76.
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>> | 92% | 51,938 psi | 85% | 2910 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,200 psi | 87% | 2943 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,041 psi | 89% | 3064 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 53,824 psi | 88% | 3002 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 92% | 51,735 psi | 85% | 3005 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,617 psi | 81% | 2959 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,309 psi | 73% | 2920 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,128 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,013 psi | 90% | 3012 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,592 psi | 88% | 2992 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 51,866 psi | 85% | 3002 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,098 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 52,243 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,040 psi | 87% | 3061 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,708 psi | 88% | 2963 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 54,520 psi | 90% | 3045 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,822 psi | 85% | 3031 fps | 98.9% |
| Bofors RP5 | <<locked>> | 92% | 51,866 psi | 85% | 3002 fps | 99.3% |
| Bofors RP7 | <<locked>> | 82% | 52,098 psi | 86% | 2890 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,795 psi | 90% | 3051 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 54,839 psi | 90% | 2999 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 53,824 psi | 88% | 2953 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 90% | 51,605 psi | 85% | 2940 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,230 psi | 89% | 2986 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,244 psi | 89% | 2920 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,766 psi | 90% | 3169 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 51,300 psi | 84% | 2972 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,057 psi | 61% | 1873 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,650 psi | 88% | 2930 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,534 psi | 88% | 2913 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 53,534 psi | 88% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,779 psi | 87% | 2927 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 94% | 53,272 psi | 87% | 3041 fps | 98.7% |
| Lovex S065 | <<locked>> | 84% | 54,186 psi | 89% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,475 psi | 86% | 2910 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 53,142 psi | 87% | 2930 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,375 psi | 89% | 2986 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,885 psi | 65% | 2841 fps | 98.2% |
| Norma MRP | <<locked>> | 90% | 51,547 psi | 85% | 3022 fps | 99.8% |
| Norma URP | <<locked>> | 84% | 51,793 psi | 85% | 2927 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,853 psi | 88% | 3061 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 53,998 psi | 89% | 2986 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,141 psi | 86% | 2992 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,956 psi | 62% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,011 psi | 87% | 2966 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 51,285 psi | 84% | 2992 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 51,721 psi | 85% | 3100 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,459 psi | 83% | 3045 fps | 97.5% |
| Rottweil R 904 | <<locked>> | 88% | 51,808 psi | 85% | 2913 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 90% | 53,069 psi | 87% | 2979 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 82% | 52,098 psi | 86% | 2890 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,186 psi | 89% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,475 psi | 86% | 2910 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,272 psi | 87% | 2864 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,649 psi | 86% | 2976 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 53,026 psi | 87% | 2904 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 52,054 psi | 85% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,490 psi | 88% | 2949 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 54,273 psi | 89% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,461 psi | 88% | 2920 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,011 psi | 87% | 2930 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 52,562 psi | 86% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 51,750 psi | 85% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,100 psi | 90% | 3077 fps | 98.6% |
| Vihtavuori N565 | <<locked>> | 98% | 54,868 psi | 90% | 3054 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,634 psi | 85% | 3051 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,750 psi | 87% | 2874 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,839 psi | 90% | 2999 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,404 psi | 89% | 3114 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,272 psi | 87% | 2943 fps | 99.3% |
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% | 34,650 psi | 57% | 2572 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 46,369 psi | 76% | 2831 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 43,758 psi | 72% | 2867 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 38,595 psi | 63% | 2700 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 39,508 psi | 65% | 2749 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 94% | 40,698 psi | 67% | 2772 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 90% | 32,039 psi | 53% | 2608 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,382 psi | 73% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,329 psi | 84% | 2956 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,653 psi | 63% | 2697 fps | 96.3% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,927 psi | 61% | 2697 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,243 psi | 55% | 2602 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,935 psi | 48% | 2503 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,376 psi | 60% | 2743 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,372 psi | 83% | 2904 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 36,753 psi | 60% | 2690 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 36,956 psi | 61% | 2726 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 36,927 psi | 61% | 2697 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 48,907 psi | 80% | 2831 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,827 psi | 64% | 2733 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,935 psi | 79% | 2881 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,357 psi | 83% | 2894 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,076 psi | 69% | 2756 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,423 psi | 68% | 2740 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,814 psi | 69% | 2717 fps | 100% |
| Hodgdon Retumbo | 75 gr | 86% | 34,389 psi | 56% | 2710 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 47,500 psi | 78% | 2907 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 46% | 1677 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,353 psi | 73% | 2762 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,328 psi | 83% | 2861 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 44,005 psi | 72% | 2772 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,031 psi | 67% | 2697 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 86% | 40,553 psi | 67% | 2785 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 47,877 psi | 79% | 2808 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,122 psi | 76% | 2795 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,805 psi | 49% | 2444 fps | 95.8% |
| Norma 204 | <<locked>> | 80% | 44,512 psi | 73% | 2805 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 32,677 psi | 54% | 2657 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 36,042 psi | 59% | 2703 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 45,339 psi | 74% | 2815 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 40,335 psi | 66% | 2795 fps | 96% |
| Ramshot Hunter | <<locked>> | 80% | 44,309 psi | 73% | 2815 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,475 psi | 55% | 2605 fps | 95.4% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,384 psi | 47% | 1716 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,253 psi | 76% | 2851 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,411 psi | 73% | 2867 fps | 100% |
| ReloadSwiss RS 76 | 78.4 gr | 84% | 31,256 psi | 51% | 2612 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,323 psi | 71% | 2904 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 39,958 psi | 66% | 2680 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,029 psi | 62% | 2684 fps | 96.3% |
| Rottweil R 907 | <<locked>> | 80% | 48,907 psi | 80% | 2831 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,877 psi | 79% | 2808 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,122 psi | 76% | 2795 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,775 psi | 77% | 2753 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,695 psi | 62% | 2677 fps | 96.2% |
| Somchem S361 | <<locked>> | 82% | 43,540 psi | 71% | 2726 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 42,424 psi | 70% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,493 psi | 63% | 2664 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 50,720 psi | 83% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,833 psi | 77% | 2808 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,402 psi | 55% | 2533 fps | 95.1% |
| Vihtavuori N550 | <<locked>> | 80% | 46,209 psi | 76% | 2815 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,246 psi | 61% | 2677 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 41,669 psi | 68% | 2818 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 90% | 41,872 psi | 69% | 2812 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 96% | 44,686 psi | 73% | 2917 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,963 psi | 75% | 2769 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,124 psi | 79% | 2884 fps | 99.5% |
| Winchester StaBALL HD | 71.7 gr | 80% | 29,588 psi | 49% | 2621 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,201 psi | 58% | 2585 fps | 95.1% |
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 70 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Swift A-Frame. Hodgdon Retumbo delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,873 fps to 3,169 fps. ADI AR 2217 gives the best case fill at 100 %, and 70 of the 70 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 0.308" calls for a 1:14.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Bofors RP30 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, Hodgdon Retumbo, ReloadSwiss RS 76 rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Swift A-Frame 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.