Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Sako Hammerhead bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, Winchester StaBALL HD 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% | 52,011 psi | 85% | 2913 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 53,301 psi | 88% | 2946 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 53,374 psi | 88% | 3064 fps | 98.8% |
| Accurate MAGPRO | <<locked>> | 92% | 54,114 psi | 89% | 3061 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 53,882 psi | 88% | 3002 fps | 99.4% |
| ADI AR 2213 | <<locked>> | 92% | 51,808 psi | 85% | 3005 fps | 98.4% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,676 psi | 82% | 2959 fps | 98.3% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,353 psi | 73% | 2920 fps | 99.6% |
| Alliant Power Pro Varmint | <<locked>> | 90% | 54,288 psi | 89% | 2999 fps | 99.4% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,027 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 55,114 psi | 90% | 3015 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,679 psi | 88% | 2992 fps | 99.4% |
| Alliant Reloder-22 | <<locked>> | 92% | 51,938 psi | 85% | 3005 fps | 99.3% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,185 psi | 87% | 2979 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 52,301 psi | 86% | 3035 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,127 psi | 87% | 3064 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,751 psi | 88% | 2966 fps | 96.1% |
| Bofors RP15 | <<locked>> | 96% | 54,607 psi | 90% | 3048 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,909 psi | 85% | 3035 fps | 98.9% |
| Bofors RP5 | <<locked>> | 92% | 51,938 psi | 85% | 3005 fps | 99.3% |
| Bofors RP7 | <<locked>> | 82% | 52,170 psi | 86% | 2890 fps | 99.6% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,853 psi | 90% | 3051 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 54,926 psi | 90% | 3002 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 53,925 psi | 89% | 2956 fps | 99.5% |
| Hodgdon H4831 | <<locked>> | 90% | 51,692 psi | 85% | 2940 fps | 97.8% |
| Hodgdon H4831 SC | <<locked>> | 92% | 54,302 psi | 89% | 2986 fps | 98.2% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 54,331 psi | 89% | 2923 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,839 psi | 90% | 3169 fps | 100% |
| Hodgdon Superformance | <<locked>> | 82% | 51,372 psi | 84% | 2976 fps | 99.7% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,188 psi | 61% | 1877 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,737 psi | 88% | 2933 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 53,606 psi | 88% | 2917 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 53,621 psi | 88% | 2936 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,852 psi | 87% | 2927 fps | 98.1% |
| IMR 7828 SSC | <<locked>> | 94% | 53,345 psi | 88% | 3045 fps | 98.7% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 39,972 psi | 66% | 2818 fps | 96% |
| Lovex S065 | <<locked>> | 84% | 54,288 psi | 89% | 2913 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,518 psi | 86% | 2910 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 53,214 psi | 87% | 2933 fps | 100% |
| Norma 204 | <<locked>> | 86% | 54,462 psi | 89% | 2986 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,958 psi | 66% | 2844 fps | 98.3% |
| Norma MRP | <<locked>> | 90% | 51,619 psi | 85% | 3025 fps | 99.9% |
| Norma URP | <<locked>> | 84% | 51,895 psi | 85% | 2930 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,925 psi | 89% | 3064 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 54,056 psi | 89% | 2989 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,199 psi | 86% | 2992 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,898 psi | 62% | 1919 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,098 psi | 87% | 2969 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 84% | 51,372 psi | 84% | 2995 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 51,764 psi | 85% | 3104 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 50,546 psi | 83% | 3045 fps | 97.5% |
| Rottweil R 904 | <<locked>> | 88% | 51,692 psi | 85% | 2913 fps | 98.4% |
| Rottweil R 905 | <<locked>> | 90% | 53,156 psi | 87% | 2979 fps | 99.4% |
| Rottweil R 907 | <<locked>> | 82% | 52,170 psi | 86% | 2890 fps | 99.6% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,288 psi | 89% | 2913 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,518 psi | 86% | 2910 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,374 psi | 88% | 2864 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,736 psi | 87% | 2976 fps | 99.4% |
| Somchem S361 | <<locked>> | 88% | 53,084 psi | 87% | 2907 fps | 98% |
| Somchem S365 | <<locked>> | 86% | 52,156 psi | 86% | 2933 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 53,563 psi | 88% | 2953 fps | 99.8% |
| Vihtavuori N150 | <<locked>> | 82% | 54,157 psi | 89% | 2854 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 53,563 psi | 88% | 2923 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,084 psi | 87% | 2930 fps | 99.6% |
| Vihtavuori N550 | <<locked>> | 84% | 52,620 psi | 86% | 2923 fps | 100% |
| Vihtavuori N555 | <<locked>> | 90% | 51,793 psi | 85% | 2953 fps | 100% |
| Vihtavuori N560 | <<locked>> | 90% | 51,517 psi | 85% | 3015 fps | 98% |
| Vihtavuori N565 | <<locked>> | 98% | 54,969 psi | 90% | 3058 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,721 psi | 85% | 3051 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,823 psi | 87% | 2877 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,926 psi | 90% | 3002 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 54,491 psi | 89% | 3117 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 53,330 psi | 88% | 2946 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% | 34,708 psi | 57% | 2572 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 46,456 psi | 76% | 2835 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 40,263 psi | 66% | 2802 fps | 95.8% |
| Accurate MAGPRO | <<locked>> | 86% | 43,830 psi | 72% | 2867 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 38,667 psi | 63% | 2700 fps | 96.3% |
| ADI AR 2213 | <<locked>> | 84% | 39,421 psi | 65% | 2749 fps | 95.1% |
| ADI AR 2217 | <<locked>> | 94% | 40,756 psi | 67% | 2776 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 90% | 32,097 psi | 53% | 2608 fps | 95.7% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 39,102 psi | 64% | 2707 fps | 96.5% |
| Alliant Reloder-16 | <<locked>> | 80% | 44,483 psi | 73% | 2838 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 51,372 psi | 84% | 2959 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,740 psi | 64% | 2700 fps | 96.4% |
| Alliant Reloder-22 | <<locked>> | 82% | 37,014 psi | 61% | 2697 fps | 95.9% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,301 psi | 55% | 2605 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,979 psi | 48% | 2507 fps | 96.1% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,463 psi | 60% | 2743 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,415 psi | 83% | 2904 fps | 95.2% |
| Bofors RP15 | <<locked>> | 84% | 36,825 psi | 60% | 2690 fps | 95.7% |
| Bofors RP30 | <<locked>> | 90% | 37,028 psi | 61% | 2730 fps | 95.1% |
| Bofors RP5 | <<locked>> | 82% | 37,014 psi | 61% | 2697 fps | 95.9% |
| Bofors RP7 | <<locked>> | 80% | 48,994 psi | 80% | 2835 fps | 99.3% |
| Hodgdon H1000 | <<locked>> | 90% | 38,885 psi | 64% | 2733 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 80% | 48,022 psi | 79% | 2884 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 50,459 psi | 83% | 2897 fps | 99.1% |
| Hodgdon H4831 | <<locked>> | 84% | 42,148 psi | 69% | 2759 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 84% | 41,336 psi | 68% | 2740 fps | 95.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,916 psi | 69% | 2717 fps | 100% |
| Hodgdon Retumbo | 75.1 gr | 86% | 34,447 psi | 57% | 2710 fps | 95.4% |
| Hodgdon Superformance | <<locked>> | 80% | 47,587 psi | 78% | 2907 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,789 psi | 46% | 1677 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,425 psi | 73% | 2766 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,227 psi | 82% | 2858 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 44,092 psi | 72% | 2776 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,089 psi | 67% | 2697 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 86% | 40,611 psi | 67% | 2789 fps | 95.7% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,420 psi | 61% | 2759 fps | 95% |
| Lovex S065 | <<locked>> | 80% | 47,979 psi | 79% | 2808 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 46,209 psi | 76% | 2799 fps | 99.4% |
| Lovex S071 | <<locked>> | 80% | 29,878 psi | 49% | 2448 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 44,411 psi | 73% | 2805 fps | 97.8% |
| Norma 217 | <<locked>> | 94% | 32,735 psi | 54% | 2657 fps | 95.5% |
| Norma MRP | <<locked>> | 80% | 36,129 psi | 59% | 2707 fps | 97.1% |
| Norma URP | <<locked>> | 80% | 45,440 psi | 75% | 2818 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 37,594 psi | 62% | 2733 fps | 95% |
| Ramshot Hunter | <<locked>> | 80% | 44,266 psi | 73% | 2815 fps | 99.5% |
| Ramshot Magnum | <<locked>> | 84% | 33,533 psi | 55% | 2608 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,485 psi | 47% | 1719 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,340 psi | 76% | 2854 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,498 psi | 73% | 2871 fps | 100% |
| ReloadSwiss RS 76 | 78.5 gr | 84% | 31,314 psi | 51% | 2615 fps | 95.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 43,381 psi | 71% | 2904 fps | 95.6% |
| Rottweil R 904 | <<locked>> | 80% | 40,045 psi | 66% | 2680 fps | 95.5% |
| Rottweil R 905 | <<locked>> | 80% | 38,116 psi | 63% | 2684 fps | 96.4% |
| Rottweil R 907 | <<locked>> | 80% | 48,994 psi | 80% | 2835 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,979 psi | 79% | 2808 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 46,209 psi | 76% | 2799 fps | 99.4% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,818 psi | 77% | 2753 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,782 psi | 62% | 2680 fps | 96.2% |
| Somchem S361 | <<locked>> | 82% | 43,613 psi | 72% | 2730 fps | 95.8% |
| Somchem S365 | <<locked>> | 80% | 42,496 psi | 70% | 2772 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,566 psi | 63% | 2664 fps | 97.3% |
| Vihtavuori N150 | <<locked>> | 80% | 50,821 psi | 83% | 2805 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,934 psi | 77% | 2812 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,460 psi | 55% | 2536 fps | 95.2% |
| Vihtavuori N550 | <<locked>> | 80% | 46,296 psi | 76% | 2818 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 37,304 psi | 61% | 2680 fps | 99.7% |
| Vihtavuori N560 | <<locked>> | 84% | 41,742 psi | 69% | 2822 fps | 95.5% |
| Vihtavuori N565 | <<locked>> | 90% | 41,930 psi | 69% | 2812 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 96% | 44,933 psi | 74% | 2920 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,050 psi | 76% | 2772 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,211 psi | 79% | 2887 fps | 99.5% |
| Winchester StaBALL HD | 71.7 gr | 80% | 29,544 psi | 49% | 2618 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,288 psi | 58% | 2589 fps | 95.2% |
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 73 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Sako Hammerhead. Hodgdon Retumbo delivers the highest muzzle velocity at 3,169 fps; across all powders the maximum-charge window runs from 1,877 fps to 3,169 fps. ADI AR 2217 gives the best case fill at 100 %, and 73 of the 73 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 1:15.0 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. Hodgdon Retumbo, Winchester StaBALL HD, ReloadSwiss RS 76 rank at the top here: for .300 Lapua Mag. with the .308 | 180gr | Sako Hammerhead 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.