Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Speer TBBC bullet and 72 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand 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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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 54,911 psi | 90% | 2953 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,547 psi | 86% | 2933 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 54,186 psi | 89% | 3054 fps | 97.3% |
| ADI AR 2209 | <<locked>> | 90% | 53,214 psi | 87% | 2986 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 54,723 psi | 90% | 3051 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,994 psi | 80% | 2943 fps | 98.1% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,685 psi | 72% | 2904 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,447 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,331 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,011 psi | 87% | 2979 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,766 psi | 90% | 3051 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 52,257 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 51,677 psi | 85% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,170 psi | 86% | 3048 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,185 psi | 87% | 2953 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 53,751 psi | 88% | 3031 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,082 psi | 84% | 3018 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 54,766 psi | 90% | 3051 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,027 psi | 90% | 2936 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,372 psi | 83% | 2972 fps | 98.9% |
| Hodgdon H414 | <<locked>> | 82% | 55,027 psi | 90% | 3002 fps | 100% |
| Hodgdon H4350 | <<locked>> | 84% | 52,011 psi | 85% | 2920 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 96% | 54,128 psi | 89% | 2979 fps | 98.1% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,490 psi | 88% | 2969 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,824 psi | 88% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,041 psi | 89% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,389 psi | 89% | 3022 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,043 psi | 61% | 1870 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,592 psi | 90% | 2907 fps | 99.9% |
| IMR 4350 | <<locked>> | 86% | 53,098 psi | 87% | 2920 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,939 psi | 87% | 2900 fps | 99.8% |
| IMR 4831 | <<locked>> | 90% | 54,331 psi | 89% | 2946 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,286 psi | 86% | 2913 fps | 97.9% |
| IMR 7828 SSC | <<locked>> | 92% | 52,678 psi | 86% | 3028 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 53,577 psi | 88% | 2900 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 51,851 psi | 85% | 2897 fps | 99.8% |
| Lovex S071 | <<locked>> | 98% | 52,547 psi | 86% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,809 psi | 88% | 2972 fps | 99.2% |
| Norma 217ᴾ | <<locked>> | 100% | 39,262 psi | 64% | 2825 fps | 98% |
| Norma MRP | <<locked>> | 92% | 54,491 psi | 89% | 3071 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,578 psi | 90% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 52,243 psi | 86% | 3031 fps | 98.8% |
| Ramshot Hunter | <<locked>> | 86% | 53,403 psi | 88% | 2972 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,359 psi | 88% | 3012 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,927 psi | 62% | 1913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,591 psi | 86% | 2959 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,375 psi | 89% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,868 psi | 90% | 3150 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,617 psi | 81% | 3028 fps | 97.3% |
| Rottweil R 904 | <<locked>> | 90% | 54,636 psi | 90% | 2959 fps | 98.7% |
| Rottweil R 905 | <<locked>> | 90% | 52,475 psi | 86% | 2966 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 55,027 psi | 90% | 2936 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,577 psi | 88% | 2900 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 51,851 psi | 85% | 2897 fps | 99.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,881 psi | 87% | 2854 fps | 99.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,054 psi | 85% | 2963 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 52,576 psi | 86% | 2894 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 54,940 psi | 90% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,953 psi | 87% | 2940 fps | 99.7% |
| Unknown powder | <<locked>> | 84% | 54,781 psi | 90% | 2972 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 54,331 psi | 89% | 2861 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 55,100 psi | 90% | 2936 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,128 psi | 89% | 2946 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 82% | 52,098 psi | 86% | 2933 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,534 psi | 90% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,882 psi | 90% | 3074 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,157 psi | 89% | 3041 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 50,734 psi | 83% | 3031 fps | 96.9% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,156 psi | 86% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 82% | 55,027 psi | 90% | 3002 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,432 psi | 88% | 3100 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,230 psi | 89% | 2956 fps | 99.4% |
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% | 34,229 psi | 56% | 2562 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 45,876 psi | 75% | 2818 fps | 100% |
| Accurate MAGPRO | <<locked>> | 90% | 46,963 psi | 77% | 2923 fps | 95.6% |
| ADI AR 2209 | <<locked>> | 80% | 38,218 psi | 63% | 2687 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 41,684 psi | 68% | 2799 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 94% | 40,103 psi | 66% | 2756 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 31,691 psi | 52% | 2595 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,888 psi | 72% | 2828 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,633 psi | 83% | 2943 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,276 psi | 63% | 2687 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,535 psi | 60% | 2684 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,837 psi | 54% | 2589 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,601 psi | 47% | 2493 fps | 95.8% |
| Alliant Reloder-26 | 73.8 gr | 80% | 35,810 psi | 59% | 2730 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 49,995 psi | 82% | 2890 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,230 psi | 59% | 2677 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 38,986 psi | 64% | 2776 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 36,535 psi | 60% | 2684 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,486 psi | 80% | 2822 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 92% | 38,551 psi | 63% | 2723 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 51,445 psi | 84% | 2943 fps | 99.8% |
| Hodgdon H4350 | <<locked>> | 80% | 45,977 psi | 75% | 2808 fps | 98.4% |
| Hodgdon H4831 | <<locked>> | 88% | 41,698 psi | 68% | 2746 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,700 psi | 72% | 2789 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,336 psi | 68% | 2703 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,910 psi | 56% | 2694 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 46,920 psi | 77% | 2894 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,702 psi | 45% | 1670 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,474 psi | 85% | 2854 fps | 99.7% |
| IMR 4350 | <<locked>> | 80% | 43,947 psi | 72% | 2753 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,922 psi | 82% | 2851 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 39,668 psi | 65% | 2684 fps | 99.7% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,683 psi | 67% | 2687 fps | 95% |
| IMR 7828 SSC | <<locked>> | 84% | 40,016 psi | 66% | 2772 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,456 psi | 78% | 2795 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,716 psi | 75% | 2785 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,428 psi | 48% | 2434 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,918 psi | 72% | 2792 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 32,271 psi | 53% | 2641 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 35,679 psi | 59% | 2694 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,889 psi | 74% | 2805 fps | 100% |
| Ramshot Grand | 75.7 gr | 82% | 38,711 psi | 64% | 2756 fps | 95.3% |
| Ramshot Hunter | <<locked>> | 80% | 43,743 psi | 72% | 2802 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 82% | 33,837 psi | 56% | 2615 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,413 psi | 47% | 1713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,832 psi | 75% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,005 psi | 72% | 2861 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,054 psi | 54% | 2667 fps | 96% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,714 psi | 70% | 2887 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 39,581 psi | 65% | 2671 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,449 psi | 61% | 2667 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 48,486 psi | 80% | 2822 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,456 psi | 78% | 2795 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,716 psi | 75% | 2785 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,354 psi | 76% | 2743 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,144 psi | 61% | 2661 fps | 95.9% |
| Somchem S361 | <<locked>> | 82% | 43,062 psi | 71% | 2717 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 41,916 psi | 69% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,130 psi | 63% | 2654 fps | 97.1% |
| Unknown powder | <<locked>> | 80% | 48,124 psi | 79% | 2861 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 45,281 psi | 74% | 2717 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 48,254 psi | 79% | 2831 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 34,214 psi | 56% | 2552 fps | 95.4% |
| Vihtavuori N550 | <<locked>> | 80% | 48,936 psi | 80% | 2877 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,796 psi | 60% | 2667 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 86% | 41,829 psi | 69% | 2825 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 90% | 41,336 psi | 68% | 2799 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 96% | 44,063 psi | 72% | 2900 fps | 95% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,426 psi | 75% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 51,445 psi | 84% | 2943 fps | 99.8% |
| Winchester StaBALL HD | 70.9 gr | 80% | 29,138 psi | 48% | 2605 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 80% | 37,869 psi | 62% | 2648 fps | 96.1% |
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 77 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Speer TBBC. Hodgdon Retumbo delivers the highest muzzle velocity at 3,153 fps; across all powders the maximum-charge window runs from 1,870 fps to 3,153 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 180.0 gr projectile in 0.308" calls for a 1:13.0 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. Alliant Reloder-26, Ramshot Grand, Winchester StaBALL HD rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Speer TBBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 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.