Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 165gr | Barnes X S bullet and 69 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>> | 92% | 51,866 psi | 85% | 3002 fps | 99.8% |
| Accurate 4350 | <<locked>> | 84% | 52,924 psi | 87% | 3038 fps | 100% |
| Accurate High Country | <<locked>> | 90% | 52,185 psi | 86% | 3140 fps | 97.8% |
| Accurate MAGPRO | <<locked>> | 92% | 52,837 psi | 87% | 3136 fps | 96.7% |
| ADI AR 2209 | <<locked>> | 90% | 52,605 psi | 86% | 3074 fps | 98.6% |
| ADI AR 2213 | <<locked>> | 94% | 54,114 psi | 89% | 3136 fps | 97.9% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 48,747 psi | 80% | 3022 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 43,830 psi | 72% | 2992 fps | 98.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,794 psi | 87% | 3091 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,693 psi | 88% | 3104 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 52,620 psi | 86% | 3071 fps | 98.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 54,201 psi | 89% | 3140 fps | 99% |
| Alliant Reloder-23 | <<locked>> | 94% | 51,779 psi | 85% | 3064 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 54,288 psi | 89% | 3173 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 51,619 psi | 85% | 3150 fps | 100% |
| Bofors RP15 | <<locked>> | 96% | 53,272 psi | 87% | 3120 fps | 98.8% |
| Bofors RP30ᴾ | <<locked>> | 100% | 50,662 psi | 83% | 3107 fps | 97.9% |
| Bofors RP5 | <<locked>> | 94% | 54,201 psi | 89% | 3140 fps | 99% |
| Bofors RP7 | <<locked>> | 84% | 54,984 psi | 90% | 3031 fps | 99.4% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 53,505 psi | 88% | 3117 fps | 98.6% |
| Hodgdon H414 | <<locked>> | 84% | 53,925 psi | 89% | 3084 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 82% | 53,055 psi | 87% | 3035 fps | 98.8% |
| Hodgdon H4831 | <<locked>> | 92% | 53,954 psi | 89% | 3071 fps | 97.2% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,968 psi | 87% | 3051 fps | 97% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 53,476 psi | 88% | 3012 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 53,359 psi | 88% | 3238 fps | 99.6% |
| Hodgdon Superformance | <<locked>> | 84% | 53,737 psi | 88% | 3114 fps | 99.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,173 psi | 61% | 1942 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,794 psi | 87% | 3009 fps | 99.2% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,866 psi | 87% | 2995 fps | 99.4% |
| IMR 4831 | <<locked>> | 86% | 52,968 psi | 87% | 3025 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 51,967 psi | 85% | 2999 fps | 97% |
| IMR 7828 SSC | <<locked>> | 94% | 51,924 psi | 85% | 3110 fps | 97.6% |
| Lovex S065 | <<locked>> | 84% | 53,954 psi | 89% | 3002 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 52,098 psi | 86% | 2995 fps | 99.5% |
| Lovex S071 | <<locked>> | 98% | 52,808 psi | 87% | 3018 fps | 99.9% |
| Norma 204 | <<locked>> | 86% | 53,359 psi | 88% | 3061 fps | 98.5% |
| Norma 217ᴾ | <<locked>> | 100% | 39,711 psi | 65% | 2920 fps | 97.1% |
| Norma MRP | <<locked>> | 92% | 53,867 psi | 88% | 3163 fps | 99.7% |
| Norma URP | <<locked>> | 86% | 54,346 psi | 89% | 3071 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,402 psi | 86% | 3130 fps | 98% |
| Ramshot Hunter | <<locked>> | 86% | 53,055 psi | 87% | 3071 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 54,636 psi | 90% | 3130 fps | 99.5% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 63% | 1991 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 52,504 psi | 86% | 3058 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,693 psi | 88% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,969 psi | 89% | 3235 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 49,313 psi | 81% | 3110 fps | 96.1% |
| Rottweil R 904 | <<locked>> | 90% | 54,201 psi | 89% | 3048 fps | 97.9% |
| Rottweil R 905 | <<locked>> | 90% | 52,185 psi | 86% | 3058 fps | 98.7% |
| Rottweil R 907 | <<locked>> | 84% | 54,984 psi | 90% | 3031 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 84% | 53,954 psi | 89% | 3002 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 52,098 psi | 86% | 2995 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,098 psi | 87% | 2949 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 55,114 psi | 90% | 3114 fps | 99.1% |
| Somchem S361 | <<locked>> | 88% | 52,475 psi | 86% | 2979 fps | 96.9% |
| Somchem S365 | <<locked>> | 88% | 54,563 psi | 90% | 3077 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 52,968 psi | 87% | 3035 fps | 99.3% |
| Vihtavuori N150 | <<locked>> | 82% | 53,664 psi | 88% | 2946 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 52,634 psi | 86% | 3005 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 52,156 psi | 86% | 3009 fps | 98.9% |
| Vihtavuori N550 | <<locked>> | 84% | 52,170 psi | 86% | 3015 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 54,563 psi | 90% | 3097 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,679 psi | 88% | 3150 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 98% | 53,911 psi | 89% | 3133 fps | 97.8% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 51,779 psi | 85% | 2959 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,143 psi | 89% | 3087 fps | 99.7% |
| Winchester StaBALL HD | <<locked>> | 96% | 52,141 psi | 86% | 3202 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,417 psi | 86% | 3022 fps | 98.5% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,578 psi | 58% | 2671 fps | 97% |
| Accurate 4350 | <<locked>> | 80% | 46,557 psi | 76% | 2927 fps | 99.9% |
| Accurate High Country | <<locked>> | 84% | 42,699 psi | 70% | 2943 fps | 95.4% |
| Accurate MAGPRO | <<locked>> | 88% | 46,253 psi | 76% | 3005 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 38,508 psi | 63% | 2779 fps | 95% |
| ADI AR 2213 | <<locked>> | 88% | 44,614 psi | 73% | 2946 fps | 95.5% |
| ADI AR 2217 | <<locked>> | 96% | 42,975 psi | 71% | 2897 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 92% | 34,461 psi | 57% | 2743 fps | 95.4% |
| Alliant Reloder-16 | <<locked>> | 80% | 43,801 psi | 72% | 2923 fps | 99.9% |
| Alliant Reloder-17 | <<locked>> | 80% | 50,212 psi | 82% | 3045 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 38,566 psi | 63% | 2776 fps | 95.1% |
| Alliant Reloder-22 | <<locked>> | 84% | 39,378 psi | 65% | 2838 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,547 psi | 55% | 2694 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,602 psi | 49% | 2592 fps | 95% |
| Alliant Reloder-26 | <<locked>> | 80% | 36,434 psi | 60% | 2831 fps | 98.7% |
| Bofors RP15 | <<locked>> | 86% | 39,044 psi | 64% | 2828 fps | 95.3% |
| Bofors RP30 | <<locked>> | 94% | 41,901 psi | 69% | 2927 fps | 95.6% |
| Bofors RP5 | <<locked>> | 84% | 39,378 psi | 65% | 2838 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 48,762 psi | 80% | 2917 fps | 98.7% |
| Hodgdon H1000 | <<locked>> | 92% | 41,249 psi | 68% | 2864 fps | 95.4% |
| Hodgdon H414 | <<locked>> | 80% | 47,485 psi | 78% | 2966 fps | 98.9% |
| Hodgdon H4350 | <<locked>> | 80% | 49,748 psi | 82% | 2972 fps | 98.3% |
| Hodgdon H4831 | <<locked>> | 88% | 47,543 psi | 78% | 2953 fps | 95.7% |
| Hodgdon H4831 SC | <<locked>> | 88% | 46,731 psi | 77% | 2936 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 41,785 psi | 69% | 2805 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 88% | 36,840 psi | 60% | 2851 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 46,673 psi | 77% | 2986 fps | 98.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,050 psi | 46% | 1742 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,063 psi | 72% | 2841 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 49,777 psi | 82% | 2943 fps | 99.1% |
| IMR 4831 | <<locked>> | 80% | 44,005 psi | 72% | 2864 fps | 99.8% |
| IMR 4955 Enduron | <<locked>> | 86% | 46,079 psi | 76% | 2887 fps | 95.6% |
| IMR 7828 SSC | <<locked>> | 88% | 43,018 psi | 71% | 2923 fps | 95.1% |
| Lovex S065 | <<locked>> | 80% | 47,892 psi | 79% | 2897 fps | 99.6% |
| Lovex S070 | <<locked>> | 80% | 46,195 psi | 76% | 2884 fps | 98.8% |
| Lovex S071 | <<locked>> | 80% | 31,053 psi | 51% | 2549 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 43,961 psi | 72% | 2877 fps | 96.6% |
| Norma 217 | <<locked>> | 96% | 35,114 psi | 58% | 2799 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 36,230 psi | 59% | 2792 fps | 96% |
| Norma URP | <<locked>> | 80% | 45,092 psi | 74% | 2904 fps | 99.8% |
| Ramshot Grand | <<locked>> | 88% | 42,873 psi | 70% | 2933 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 43,845 psi | 72% | 2897 fps | 98.9% |
| Ramshot Magnum | <<locked>> | 86% | 36,100 psi | 59% | 2746 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,645 psi | 47% | 1781 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 46,079 psi | 76% | 2943 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 43,961 psi | 72% | 2953 fps | 99.7% |
| ReloadSwiss RS 76 | <<locked>> | 88% | 36,201 psi | 59% | 2828 fps | 96.1% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 45,905 psi | 75% | 3041 fps | 95% |
| Rottweil R 904 | <<locked>> | 82% | 42,395 psi | 70% | 2815 fps | 95.1% |
| Rottweil R 905 | <<locked>> | 80% | 38,087 psi | 63% | 2766 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 48,762 psi | 80% | 2917 fps | 98.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 47,892 psi | 79% | 2897 fps | 99.6% |
| Shooters World SW4350 | <<locked>> | 80% | 46,195 psi | 76% | 2884 fps | 98.8% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 46,862 psi | 77% | 2838 fps | 98.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 37,739 psi | 62% | 2759 fps | 95% |
| Somchem S361 | <<locked>> | 84% | 46,166 psi | 76% | 2861 fps | 95.3% |
| Somchem S365 | <<locked>> | 80% | 42,177 psi | 69% | 2864 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 38,841 psi | 64% | 2749 fps | 96.4% |
| Vihtavuori N150 | <<locked>> | 80% | 50,459 psi | 83% | 2897 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 46,485 psi | 76% | 2897 fps | 99.9% |
| Vihtavuori N165 | <<locked>> | 84% | 38,174 psi | 63% | 2730 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 46,137 psi | 76% | 2904 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 80% | 37,811 psi | 62% | 2779 fps | 99.3% |
| Vihtavuori N560 | <<locked>> | 86% | 44,092 psi | 72% | 2959 fps | 95% |
| Vihtavuori N565 | <<locked>> | 92% | 44,440 psi | 73% | 2953 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 45,324 psi | 74% | 2854 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,688 psi | 78% | 2969 fps | 98.9% |
| Winchester StaBALL HD | <<locked>> | 80% | 30,197 psi | 50% | 2713 fps | 99.5% |
| Winchester Supreme 780 | <<locked>> | 84% | 40,350 psi | 66% | 2785 fps | 95.8% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 69 powders for .300 Lapua Mag. loaded with the .308 | 165gr | Barnes X S. Hodgdon Retumbo delivers the highest muzzle velocity at 3,238 fps; across all powders the maximum-charge window runs from 1,942 fps to 3,238 fps. ADI AR 2217 gives the best case fill at 100 %, and 69 of the 69 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 165.0 gr projectile in 0.308" calls for a 1:12.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.