Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 190gr | TWENTY-NINE ERTP bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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% | 52,866 psi | 87% | 2841 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,360 psi | 89% | 2874 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 54,143 psi | 89% | 2989 fps | 99% |
| Accurate MAGPRO | <<locked>> | 94% | 54,911 psi | 90% | 2989 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 92% | 55,100 psi | 90% | 2930 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,736 psi | 87% | 2930 fps | 98.6% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,195 psi | 77% | 2825 fps | 97.9% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,959 psi | 69% | 2789 fps | 99.3% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,851 psi | 85% | 2871 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 51,851 psi | 85% | 2871 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 88% | 55,027 psi | 90% | 2923 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,547 psi | 86% | 2887 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,636 psi | 90% | 2920 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,649 psi | 86% | 2930 fps | 99.4% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,693 psi | 88% | 2900 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 52,808 psi | 87% | 2959 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 53,824 psi | 88% | 2989 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 54,766 psi | 90% | 2890 fps | 96.3% |
| Bofors RP15 | <<locked>> | 96% | 51,648 psi | 85% | 2910 fps | 99.3% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,950 psi | 80% | 2900 fps | 98.5% |
| Bofors RP5 | <<locked>> | 94% | 52,649 psi | 86% | 2930 fps | 99.4% |
| Bofors RP7 | <<locked>> | 84% | 53,432 psi | 88% | 2818 fps | 99.7% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 51,895 psi | 85% | 2910 fps | 99.2% |
| Hodgdon H414 | <<locked>> | 84% | 52,417 psi | 86% | 2871 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 51,837 psi | 85% | 2828 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 92% | 52,663 psi | 86% | 2867 fps | 98% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,793 psi | 85% | 2851 fps | 97.8% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,054 psi | 85% | 2799 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 51,851 psi | 85% | 3028 fps | 99.9% |
| Hodgdon Superformance | <<locked>> | 84% | 52,533 psi | 86% | 2907 fps | 99.8% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 61% | 1791 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 54,911 psi | 90% | 2858 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 84% | 55,027 psi | 90% | 2844 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,650 psi | 90% | 2864 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,143 psi | 89% | 2858 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 96% | 54,157 psi | 89% | 2966 fps | 98.9% |
| Lovex S065 | <<locked>> | 84% | 52,185 psi | 86% | 2789 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,577 psi | 88% | 2835 fps | 99.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,795 psi | 88% | 2854 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,127 psi | 86% | 2858 fps | 99.1% |
| Norma 217ᴾ | <<locked>> | 100% | 37,420 psi | 61% | 2710 fps | 97.7% |
| Norma MRP | <<locked>> | 92% | 52,344 psi | 86% | 2949 fps | 99.9% |
| Norma URP | <<locked>> | 86% | 52,823 psi | 87% | 2854 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,650 psi | 90% | 2986 fps | 99.2% |
| Ramshot Hunter | <<locked>> | 86% | 51,648 psi | 85% | 2861 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 52,881 psi | 87% | 2917 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,753 psi | 62% | 1834 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,302 psi | 89% | 2897 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,286 psi | 86% | 2920 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,228 psi | 86% | 3025 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,108 psi | 77% | 2904 fps | 96.8% |
| Rottweil R 903 | <<locked>> | 82% | 54,737 psi | 90% | 2818 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 52,794 psi | 87% | 2841 fps | 98.6% |
| Rottweil R 905 | <<locked>> | 92% | 53,983 psi | 89% | 2904 fps | 99.5% |
| Rottweil R 907 | <<locked>> | 84% | 53,432 psi | 88% | 2818 fps | 99.7% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,185 psi | 86% | 2789 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,577 psi | 88% | 2835 fps | 99.9% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,708 psi | 90% | 2690 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,708 psi | 90% | 2792 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,548 psi | 88% | 2900 fps | 99.5% |
| Somchem S355 | <<locked>> | 82% | 54,505 psi | 89% | 2815 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,404 psi | 89% | 2835 fps | 98.2% |
| Somchem S365 | <<locked>> | 88% | 53,011 psi | 87% | 2858 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,621 psi | 90% | 2877 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 52,243 psi | 86% | 2740 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,694 psi | 90% | 2848 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,114 psi | 89% | 2858 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 86% | 53,882 psi | 88% | 2854 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,489 psi | 86% | 2877 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,330 psi | 86% | 2943 fps | 98.2% |
| Vihtavuori N565 | <<locked>> | 98% | 51,953 psi | 85% | 2920 fps | 98.4% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,602 psi | 80% | 2913 fps | 96.6% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,027 psi | 89% | 2805 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,634 psi | 86% | 2874 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,520 psi | 90% | 3035 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,462 psi | 89% | 2874 fps | 99.5% |
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% | 32,953 psi | 54% | 2457 fps | 97.3% |
| Accurate 4350 | <<locked>> | 80% | 44,309 psi | 73% | 2710 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 38,087 psi | 63% | 2677 fps | 95.2% |
| Accurate MAGPRO | <<locked>> | 88% | 44,469 psi | 73% | 2802 fps | 95.8% |
| ADI AR 2209 | <<locked>> | 80% | 36,956 psi | 61% | 2582 fps | 95.9% |
| ADI AR 2213 | <<locked>> | 86% | 40,263 psi | 66% | 2687 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 94% | 38,609 psi | 63% | 2641 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 90% | 30,530 psi | 50% | 2490 fps | 95% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,362 psi | 61% | 2585 fps | 96.1% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 37,362 psi | 61% | 2585 fps | 96.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,424 psi | 70% | 2713 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 48,892 psi | 80% | 2831 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,028 psi | 61% | 2579 fps | 96% |
| Alliant Reloder-22 | <<locked>> | 82% | 35,157 psi | 58% | 2579 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,633 psi | 52% | 2487 fps | 99.6% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,601 psi | 45% | 2392 fps | 95.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,360 psi | 56% | 2621 fps | 99% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 51,474 psi | 85% | 2831 fps | 95.5% |
| Bofors RP15 | <<locked>> | 84% | 34,853 psi | 57% | 2569 fps | 95.2% |
| Bofors RP30 | <<locked>> | 92% | 37,362 psi | 61% | 2664 fps | 95.5% |
| Bofors RP5 | <<locked>> | 82% | 35,157 psi | 58% | 2579 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 47,210 psi | 78% | 2713 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 37,086 psi | 61% | 2612 fps | 95.3% |
| Hodgdon H414 | <<locked>> | 80% | 45,847 psi | 75% | 2756 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 80% | 48,602 psi | 80% | 2772 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 86% | 43,149 psi | 71% | 2694 fps | 95.8% |
| Hodgdon H4831 SC | <<locked>> | 86% | 42,235 psi | 69% | 2677 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,045 psi | 66% | 2598 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 34,853 psi | 57% | 2648 fps | 95.9% |
| Hodgdon Superformance | <<locked>> | 80% | 45,223 psi | 74% | 2779 fps | 99.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,659 psi | 45% | 1598 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,627 psi | 70% | 2644 fps | 98.4% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,530 psi | 80% | 2736 fps | 99.5% |
| IMR 4831 | <<locked>> | 80% | 42,264 psi | 69% | 2657 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 84% | 42,061 psi | 69% | 2635 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 86% | 38,740 psi | 64% | 2664 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 46,151 psi | 76% | 2687 fps | 99.8% |
| Lovex S070 | <<locked>> | 80% | 44,498 psi | 73% | 2677 fps | 99.2% |
| Lovex S071 | <<locked>> | 80% | 28,398 psi | 47% | 2339 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 42,627 psi | 70% | 2684 fps | 97.4% |
| Norma 217 | <<locked>> | 96% | 32,880 psi | 54% | 2592 fps | 95.8% |
| Norma MRP | 66.7 gr | 80% | 34,330 psi | 56% | 2589 fps | 96.7% |
| Norma URP | <<locked>> | 80% | 43,569 psi | 72% | 2697 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 38,363 psi | 63% | 2671 fps | 95.4% |
| Ramshot Hunter | <<locked>> | 80% | 42,409 psi | 70% | 2694 fps | 99.3% |
| Ramshot Magnum | <<locked>> | 86% | 34,113 psi | 56% | 2549 fps | 95.9% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,239 psi | 46% | 1637 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,077 psi | 72% | 2726 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,279 psi | 69% | 2746 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 31,792 psi | 52% | 2559 fps | 95.6% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 43,816 psi | 72% | 2838 fps | 95.9% |
| Rottweil R 903 | <<locked>> | 80% | 51,300 psi | 84% | 2769 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,464 psi | 63% | 2566 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 36,274 psi | 60% | 2566 fps | 95.9% |
| Rottweil R 907 | <<locked>> | 80% | 47,210 psi | 78% | 2713 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,151 psi | 76% | 2687 fps | 99.8% |
| Shooters World SW4350 | <<locked>> | 80% | 44,498 psi | 73% | 2677 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,503 psi | 85% | 2644 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,107 psi | 74% | 2635 fps | 99.2% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,955 psi | 59% | 2559 fps | 95.8% |
| Somchem S355 | <<locked>> | 80% | 51,155 psi | 84% | 2766 fps | 100% |
| Somchem S361 | <<locked>> | 82% | 41,626 psi | 68% | 2608 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 40,321 psi | 66% | 2651 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,912 psi | 61% | 2549 fps | 97% |
| Vihtavuori N150 | <<locked>> | 80% | 48,950 psi | 80% | 2690 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 44,976 psi | 74% | 2690 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,098 psi | 56% | 2480 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,353 psi | 73% | 2697 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,433 psi | 58% | 2562 fps | 99.5% |
| Vihtavuori N560 | 70 gr | 84% | 39,668 psi | 65% | 2697 fps | 95% |
| Vihtavuori N565 | <<locked>> | 90% | 39,523 psi | 65% | 2684 fps | 95.3% |
| Vihtavuori N568 | <<locked>> | 98% | 45,208 psi | 74% | 2848 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,859 psi | 72% | 2651 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,064 psi | 76% | 2759 fps | 99.4% |
| Winchester StaBALL HD | 66 gr | 80% | 28,079 psi | 46% | 2503 fps | 99.7% |
| Winchester Supreme 780 | <<locked>> | 82% | 35,998 psi | 59% | 2530 fps | 95.6% |
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 76 powders for .300 Lapua Mag. loaded with the .308 | 190gr | TWENTY-NINE ERTP. Winchester StaBALL HD delivers the highest muzzle velocity at 3,035 fps; across all powders the maximum-charge window runs from 1,791 fps to 3,035 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 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 190.0 gr projectile in 0.308" calls for a 1:9.0 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, Vihtavuori N560, Norma MRP rank at the top here: for .300 Lapua Mag. with the .308 | 190gr | TWENTY-NINE ERTP 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.