Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 201gr | RWS Kegelspitz bullet and 66 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 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>> | 90% | 52,866 psi | 87% | 2782 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 53,795 psi | 88% | 2802 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 54,157 psi | 89% | 2930 fps | 99.6% |
| Accurate MAGPRO | <<locked>> | 90% | 54,969 psi | 90% | 2933 fps | 99% |
| ADI AR 2209 | <<locked>> | 88% | 54,418 psi | 89% | 2864 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 52,344 psi | 86% | 2874 fps | 99.3% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 53,983 psi | 89% | 2897 fps | 99.7% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,457 psi | 80% | 2864 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 54,636 psi | 90% | 2861 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 84% | 54,723 psi | 90% | 2854 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,012 psi | 89% | 2854 fps | 99.9% |
| Alliant Reloder-22 | <<locked>> | 90% | 52,707 psi | 87% | 2871 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,259 psi | 89% | 2838 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 53,722 psi | 88% | 2904 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 54,404 psi | 89% | 2927 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,575 psi | 83% | 2917 fps | 96.7% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 53,809 psi | 88% | 2838 fps | 97.4% |
| Bofors RP15 | <<locked>> | 92% | 51,967 psi | 85% | 2858 fps | 99.7% |
| Bofors RP30 | <<locked>> | 98% | 53,301 psi | 88% | 2913 fps | 99.7% |
| Bofors RP5 | <<locked>> | 90% | 52,707 psi | 87% | 2871 fps | 99.8% |
| Hodgdon H1000 | <<locked>> | 96% | 51,851 psi | 85% | 2864 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 88% | 52,228 psi | 86% | 2812 fps | 98.8% |
| Hodgdon H4831 SC | <<locked>> | 90% | 54,694 psi | 90% | 2851 fps | 99.1% |
| Hodgdon Hybrid 100V | <<locked>> | 86% | 54,969 psi | 90% | 2779 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 52,620 psi | 86% | 2982 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,463 psi | 62% | 1778 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 53,867 psi | 88% | 2792 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,056 psi | 89% | 2792 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,084 psi | 87% | 2795 fps | 99% |
| IMR 7828 SSC | <<locked>> | 92% | 54,099 psi | 89% | 2910 fps | 99.5% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,106 psi | 72% | 2776 fps | 98.4% |
| Lovex S065 | <<locked>> | 82% | 54,389 psi | 89% | 2769 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 52,634 psi | 86% | 2766 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,099 psi | 89% | 2799 fps | 100% |
| Norma 204 | <<locked>> | 84% | 54,839 psi | 90% | 2848 fps | 99.8% |
| Norma 217ᴾ | <<locked>> | 100% | 44,541 psi | 73% | 2802 fps | 99.8% |
| Norma MRP | <<locked>> | 88% | 52,446 psi | 86% | 2887 fps | 100% |
| Norma URP | <<locked>> | 82% | 52,214 psi | 86% | 2782 fps | 100% |
| Ramshot Grand | <<locked>> | 92% | 54,868 psi | 90% | 2933 fps | 99.8% |
| Ramshot Hunter | <<locked>> | 84% | 54,607 psi | 90% | 2844 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,316 psi | 88% | 2864 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,247 psi | 63% | 1821 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 53,853 psi | 88% | 2825 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 52,069 psi | 85% | 2851 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 52,924 psi | 87% | 2976 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 52,112 psi | 86% | 2933 fps | 98.8% |
| Rottweil R 904 | <<locked>> | 86% | 52,127 psi | 86% | 2782 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 88% | 53,780 psi | 88% | 2844 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,389 psi | 89% | 2769 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 52,634 psi | 86% | 2766 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 53,214 psi | 87% | 2723 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,374 psi | 88% | 2841 fps | 99.9% |
| Somchem S361 | <<locked>> | 86% | 53,185 psi | 87% | 2772 fps | 98.9% |
| Somchem S365 | <<locked>> | 84% | 52,939 psi | 87% | 2789 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,201 psi | 89% | 2818 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 53,809 psi | 88% | 2776 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 53,824 psi | 88% | 2802 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 52,968 psi | 87% | 2782 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 52,939 psi | 87% | 2815 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 52,185 psi | 86% | 2884 fps | 99% |
| Vihtavuori N565 | <<locked>> | 94% | 52,475 psi | 86% | 2874 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 53,142 psi | 87% | 2936 fps | 98.5% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 53,882 psi | 88% | 2992 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,098 psi | 87% | 2730 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 52,547 psi | 86% | 2923 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 53,809 psi | 88% | 2812 fps | 99.8% |
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% | 37,840 psi | 62% | 2516 fps | 99.3% |
| Accurate 4350 | <<locked>> | 80% | 50,314 psi | 83% | 2749 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 41,133 psi | 68% | 2687 fps | 97.3% |
| Accurate MAGPRO | <<locked>> | 80% | 38,740 psi | 64% | 2625 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 41,785 psi | 69% | 2641 fps | 98.3% |
| ADI AR 2213 | <<locked>> | 80% | 37,275 psi | 61% | 2572 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 88% | 36,172 psi | 59% | 2546 fps | 95.7% |
| ADI AR 2225 | <<locked>> | 84% | 28,790 psi | 47% | 2395 fps | 95.6% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,221 psi | 69% | 2641 fps | 98.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,124 psi | 79% | 2753 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 41,843 psi | 69% | 2635 fps | 98.3% |
| Alliant Reloder-22 | <<locked>> | 80% | 37,652 psi | 62% | 2582 fps | 97.4% |
| Alliant Reloder-23 | <<locked>> | 80% | 36,463 psi | 60% | 2539 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 31,531 psi | 52% | 2464 fps | 98.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,321 psi | 66% | 2690 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 98% | 47,094 psi | 77% | 2851 fps | 95.7% |
| Baschieri & Pellagri 109 | <<locked>> | 88% | 47,572 psi | 78% | 2723 fps | 95.9% |
| Bofors RP15 | <<locked>> | 80% | 35,070 psi | 58% | 2520 fps | 96.4% |
| Bofors RP30 | <<locked>> | 86% | 35,505 psi | 58% | 2566 fps | 96% |
| Bofors RP5 | <<locked>> | 80% | 37,652 psi | 62% | 2582 fps | 97.4% |
| Hodgdon H1000 | <<locked>> | 84% | 34,490 psi | 57% | 2507 fps | 95.7% |
| Hodgdon H4831 | <<locked>> | 80% | 39,842 psi | 65% | 2579 fps | 96% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,088 psi | 64% | 2562 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,266 psi | 74% | 2631 fps | 100% |
| Hodgdon Retumbo | 69.1 gr | 80% | 30,734 psi | 50% | 2484 fps | 95.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,094 psi | 46% | 1591 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 47,543 psi | 78% | 2687 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 47,558 psi | 78% | 2694 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,321 psi | 68% | 2575 fps | 96.7% |
| IMR 7828 SSC | <<locked>> | 80% | 36,056 psi | 59% | 2556 fps | 95.5% |
| IMR 8133 Enduron | <<locked>> | 92% | 33,837 psi | 56% | 2543 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 51,126 psi | 84% | 2720 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 49,443 psi | 81% | 2717 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 32,561 psi | 53% | 2395 fps | 98.1% |
| Norma 204 | <<locked>> | 80% | 47,848 psi | 79% | 2730 fps | 99.2% |
| Norma 217 | <<locked>> | 88% | 29,660 psi | 49% | 2451 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 39,711 psi | 65% | 2654 fps | 99% |
| Norma URP | <<locked>> | 80% | 48,950 psi | 80% | 2733 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 35,650 psi | 59% | 2559 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 47,790 psi | 78% | 2736 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 31,792 psi | 52% | 2444 fps | 96.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,703 psi | 47% | 1627 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,314 psi | 83% | 2772 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 48,515 psi | 80% | 2795 fps | 100% |
| ReloadSwiss RS 76 | 74 gr | 80% | 29,747 psi | 49% | 2457 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 90% | 38,464 psi | 63% | 2667 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 42,989 psi | 71% | 2615 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 80% | 41,162 psi | 68% | 2618 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,126 psi | 84% | 2720 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 49,443 psi | 81% | 2717 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 49,937 psi | 82% | 2671 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 40,828 psi | 67% | 2615 fps | 98.3% |
| Somchem S361 | <<locked>> | 80% | 43,772 psi | 72% | 2608 fps | 97.1% |
| Somchem S365 | <<locked>> | 80% | 46,311 psi | 76% | 2687 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 41,698 psi | 68% | 2602 fps | 99% |
| Vihtavuori N160 | <<locked>> | 80% | 50,473 psi | 83% | 2726 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,332 psi | 60% | 2480 fps | 97.5% |
| Vihtavuori N550 | <<locked>> | 80% | 49,763 psi | 82% | 2730 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 40,712 psi | 67% | 2612 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 39,697 psi | 65% | 2644 fps | 96.2% |
| Vihtavuori N565 | <<locked>> | 84% | 37,492 psi | 62% | 2582 fps | 95.8% |
| Vihtavuori N568 | <<locked>> | 90% | 39,900 psi | 66% | 2684 fps | 95.2% |
| Vihtavuori N570 | <<locked>> | 96% | 46,717 psi | 77% | 2861 fps | 95.2% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 49,501 psi | 81% | 2680 fps | 100% |
| Winchester StaBALL HD | 71 gr | 80% | 33,040 psi | 54% | 2579 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,159 psi | 63% | 2530 fps | 97.5% |
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 66 powders for .300 Lapua Mag. loaded with the .308 | 201gr | RWS Kegelspitz. Vihtavuori N570 delivers the highest muzzle velocity at 2,992 fps; across all powders the maximum-charge window runs from 1,778 fps to 2,992 fps. ADI AR 2217 gives the best case fill at 100 %, and 66 of the 66 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 201.0 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, Alliant Reloder-33 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. Hodgdon Retumbo, ReloadSwiss RS 76, Winchester StaBALL HD rank at the top here: for .300 Lapua Mag. with the .308 | 201gr | RWS Kegelspitz 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.