Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 180gr | Nosler Partition SP bullet and 71 powders. The key underlying parameters are shown in the table above.
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% | 54,955 psi | 90% | 2956 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 52,620 psi | 86% | 2936 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 52,591 psi | 86% | 3048 fps | 98.7% |
| Accurate MAGPRO | <<locked>> | 92% | 53,519 psi | 88% | 3051 fps | 97.8% |
| ADI AR 2209 | <<locked>> | 90% | 53,301 psi | 88% | 2989 fps | 99.3% |
| ADI AR 2213 | <<locked>> | 94% | 54,824 psi | 90% | 3054 fps | 98.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 49,066 psi | 81% | 2946 fps | 98.2% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,758 psi | 72% | 2907 fps | 99.5% |
| Alliant Reloder-16 | <<locked>> | 86% | 53,519 psi | 88% | 2992 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 54,404 psi | 89% | 3002 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 53,098 psi | 87% | 2979 fps | 99.3% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,810 psi | 90% | 3051 fps | 99.6% |
| Alliant Reloder-23 | <<locked>> | 94% | 52,315 psi | 86% | 2966 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 51,721 psi | 85% | 3025 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 52,446 psi | 86% | 3051 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 53,200 psi | 87% | 2953 fps | 95.8% |
| Bofors RP15 | <<locked>> | 96% | 53,795 psi | 88% | 3031 fps | 99.4% |
| Bofors RP30ᴾ | <<locked>> | 100% | 51,358 psi | 84% | 3022 fps | 98.8% |
| Bofors RP5 | <<locked>> | 94% | 54,810 psi | 90% | 3051 fps | 99.6% |
| Bofors RP7 | <<locked>> | 84% | 55,100 psi | 90% | 2936 fps | 99.8% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 3038 fps | 99.4% |
| Hodgdon H414 | <<locked>> | 84% | 54,317 psi | 89% | 2989 fps | 99.9% |
| Hodgdon H4350 | <<locked>> | 82% | 53,461 psi | 88% | 2946 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 92% | 54,810 psi | 90% | 2992 fps | 98.3% |
| Hodgdon H4831 SC | <<locked>> | 92% | 53,534 psi | 88% | 2969 fps | 98% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,882 psi | 88% | 2913 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 54,114 psi | 89% | 3153 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 54,636 psi | 90% | 3025 fps | 99.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,144 psi | 61% | 1870 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 53,156 psi | 87% | 2920 fps | 99.7% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,997 psi | 87% | 2904 fps | 99.8% |
| IMR 4831 | <<locked>> | 86% | 52,953 psi | 87% | 2927 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 52,330 psi | 86% | 2913 fps | 98% |
| IMR 7828 SSC | <<locked>> | 94% | 52,750 psi | 87% | 3031 fps | 98.6% |
| Lovex S065 | <<locked>> | 84% | 53,650 psi | 88% | 2904 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 51,924 psi | 85% | 2897 fps | 99.9% |
| Lovex S071 | <<locked>> | 98% | 52,649 psi | 86% | 2920 fps | 100% |
| Norma 204 | <<locked>> | 86% | 53,853 psi | 88% | 2976 fps | 99.3% |
| Norma 217ᴾ | <<locked>> | 100% | 39,479 psi | 65% | 2831 fps | 98.1% |
| Norma MRP | <<locked>> | 92% | 54,534 psi | 90% | 3071 fps | 100% |
| Norma URP | <<locked>> | 86% | 54,650 psi | 90% | 2969 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 53,156 psi | 87% | 3048 fps | 99% |
| Ramshot Hunter | <<locked>> | 86% | 53,461 psi | 88% | 2976 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 51,445 psi | 84% | 2979 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,869 psi | 62% | 1913 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,649 psi | 86% | 2956 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 54,433 psi | 89% | 3041 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 3153 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,690 psi | 82% | 3028 fps | 97.3% |
| Rottweil R 904 | <<locked>> | 90% | 54,679 psi | 90% | 2959 fps | 98.8% |
| Rottweil R 905 | <<locked>> | 90% | 52,533 psi | 86% | 2969 fps | 99.3% |
| Rottweil R 907 | <<locked>> | 84% | 55,100 psi | 90% | 2936 fps | 99.8% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,650 psi | 88% | 2904 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 51,924 psi | 85% | 2897 fps | 99.9% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 52,953 psi | 87% | 2854 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 52,112 psi | 86% | 2966 fps | 99.3% |
| Somchem S361 | <<locked>> | 88% | 52,634 psi | 86% | 2894 fps | 97.8% |
| Somchem S365 | <<locked>> | 88% | 55,013 psi | 90% | 2972 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,997 psi | 87% | 2940 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 82% | 53,664 psi | 88% | 2848 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,881 psi | 87% | 2910 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,518 psi | 86% | 2920 fps | 99.5% |
| Vihtavuori N550 | <<locked>> | 84% | 52,199 psi | 86% | 2917 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,592 psi | 90% | 2992 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 54,404 psi | 89% | 3064 fps | 98.5% |
| Vihtavuori N565 | <<locked>> | 98% | 54,215 psi | 89% | 3045 fps | 98.6% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 51,024 psi | 84% | 3038 fps | 97% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 52,257 psi | 86% | 2864 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,462 psi | 89% | 2992 fps | 99.9% |
| Winchester StaBALL HD | <<locked>> | 96% | 53,534 psi | 88% | 3104 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,765 psi | 87% | 2936 fps | 99.2% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 34,287 psi | 56% | 2562 fps | 97.5% |
| Accurate 4350 | <<locked>> | 80% | 45,963 psi | 75% | 2822 fps | 100% |
| Accurate High Country | <<locked>> | 82% | 39,827 psi | 65% | 2792 fps | 95.6% |
| Accurate MAGPRO | <<locked>> | 86% | 43,236 psi | 71% | 2854 fps | 95.2% |
| ADI AR 2209 | <<locked>> | 80% | 38,276 psi | 63% | 2690 fps | 96.1% |
| ADI AR 2213 | <<locked>> | 86% | 41,742 psi | 69% | 2802 fps | 95.9% |
| ADI AR 2217 | <<locked>> | 94% | 40,161 psi | 66% | 2759 fps | 95.6% |
| ADI AR 2225 | <<locked>> | 90% | 31,720 psi | 52% | 2595 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,976 psi | 72% | 2828 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,705 psi | 83% | 2946 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,319 psi | 63% | 2687 fps | 96.2% |
| Alliant Reloder-22 | <<locked>> | 82% | 36,593 psi | 60% | 2687 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 32,866 psi | 54% | 2592 fps | 99.7% |
| Alliant Reloder-25 | <<locked>> | 80% | 28,660 psi | 47% | 2493 fps | 95.8% |
| Alliant Reloder-26 | <<locked>> | 80% | 35,868 psi | 59% | 2733 fps | 99.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,067 psi | 82% | 2894 fps | 95% |
| Bofors RP15 | <<locked>> | 84% | 36,289 psi | 60% | 2677 fps | 95.4% |
| Bofors RP30 | <<locked>> | 92% | 39,030 psi | 64% | 2776 fps | 95.8% |
| Bofors RP5 | <<locked>> | 82% | 36,593 psi | 60% | 2687 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 48,559 psi | 80% | 2825 fps | 99.2% |
| Hodgdon H1000 | <<locked>> | 90% | 38,450 psi | 63% | 2720 fps | 95.7% |
| Hodgdon H414 | <<locked>> | 80% | 47,572 psi | 78% | 2871 fps | 99.5% |
| Hodgdon H4350 | <<locked>> | 80% | 49,995 psi | 82% | 2884 fps | 99% |
| Hodgdon H4831 | <<locked>> | 84% | 41,756 psi | 69% | 2746 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 86% | 43,772 psi | 72% | 2789 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,423 psi | 68% | 2707 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 33,968 psi | 56% | 2694 fps | 95.1% |
| Hodgdon Superformance | <<locked>> | 80% | 46,978 psi | 77% | 2897 fps | 99.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,818 psi | 46% | 1673 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,005 psi | 72% | 2756 fps | 98.6% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,806 psi | 82% | 2848 fps | 99.6% |
| IMR 4831 | <<locked>> | 80% | 43,642 psi | 72% | 2766 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 40,741 psi | 67% | 2687 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 86% | 40,074 psi | 66% | 2776 fps | 95.4% |
| Lovex S065 | <<locked>> | 80% | 47,529 psi | 78% | 2799 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 45,774 psi | 75% | 2789 fps | 99.3% |
| Lovex S071 | <<locked>> | 80% | 29,457 psi | 48% | 2434 fps | 95.6% |
| Norma 204 | <<locked>> | 80% | 43,976 psi | 72% | 2792 fps | 97.6% |
| Norma 217 | <<locked>> | 94% | 32,300 psi | 53% | 2644 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 35,737 psi | 59% | 2694 fps | 96.9% |
| Norma URP | <<locked>> | 80% | 44,962 psi | 74% | 2808 fps | 100% |
| Ramshot Grand | <<locked>> | 86% | 39,871 psi | 65% | 2782 fps | 95.8% |
| Ramshot Hunter | <<locked>> | 80% | 43,816 psi | 72% | 2802 fps | 99.4% |
| Ramshot Magnum | <<locked>> | 84% | 33,083 psi | 54% | 2592 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,369 psi | 47% | 1713 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 45,905 psi | 75% | 2841 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 44,063 psi | 72% | 2861 fps | 99.9% |
| ReloadSwiss RS 76 | <<locked>> | 86% | 33,228 psi | 55% | 2674 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 42,786 psi | 70% | 2890 fps | 95.3% |
| Rottweil R 904 | <<locked>> | 80% | 39,639 psi | 65% | 2671 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 80% | 37,521 psi | 62% | 2671 fps | 96.1% |
| Rottweil R 907 | <<locked>> | 80% | 48,559 psi | 80% | 2825 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,529 psi | 78% | 2799 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 45,774 psi | 75% | 2789 fps | 99.3% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,427 psi | 76% | 2743 fps | 99.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,188 psi | 61% | 2664 fps | 96% |
| Somchem S361 | <<locked>> | 82% | 43,105 psi | 71% | 2717 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 42,003 psi | 69% | 2762 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,145 psi | 63% | 2654 fps | 97.2% |
| Vihtavuori N150 | <<locked>> | 80% | 50,357 psi | 83% | 2799 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,485 psi | 76% | 2802 fps | 100% |
| Vihtavuori N165 | <<locked>> | 82% | 35,346 psi | 58% | 2582 fps | 95.9% |
| Vihtavuori N550 | <<locked>> | 80% | 45,847 psi | 75% | 2805 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 36,825 psi | 60% | 2667 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 84% | 41,176 psi | 68% | 2808 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 90% | 41,379 psi | 68% | 2799 fps | 95.7% |
| Vihtavuori N568 | <<locked>> | 96% | 44,280 psi | 73% | 2907 fps | 95.1% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,484 psi | 75% | 2759 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,572 psi | 78% | 2871 fps | 99.5% |
| Winchester StaBALL HD | <<locked>> | 80% | 29,182 psi | 48% | 2608 fps | 99.8% |
| Winchester Supreme 780 | <<locked>> | 82% | 37,347 psi | 61% | 2635 fps | 95.9% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 71 powders for .300 Lapua Mag. loaded with the .308 | 180gr | Nosler Partition SP. 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 71 of the 71 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, 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.