Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 165gr | Barnes MRX BT bullet and 78 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, Vihtavuori N560 and ADI AR 2213.
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 2700 | <<locked>> | 84% | 54,404 psi | 89% | 2989 fps | 99.2% |
| Accurate 3100 | <<locked>> | 96% | 52,431 psi | 86% | 3035 fps | 99.8% |
| Accurate 4350 | <<locked>> | 88% | 53,911 psi | 89% | 3077 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 52,779 psi | 87% | 2999 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,561 psi | 85% | 3071 fps | 98.4% |
| ADI AR 2213 | <<locked>> | 96% | 52,823 psi | 87% | 3130 fps | 97.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 38,841 psi | 64% | 2890 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,664 psi | 88% | 3018 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 55,027 psi | 90% | 3143 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,460 psi | 86% | 3100 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 54,578 psi | 90% | 3120 fps | 98.9% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,315 psi | 86% | 3123 fps | 98.7% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,171 psi | 87% | 3107 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,211 psi | 81% | 3100 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,548 psi | 88% | 3196 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 3169 fps | 99% |
| Bofors RP3 | <<locked>> | 82% | 54,433 psi | 89% | 3035 fps | 100% |
| Bofors RP30ᴾ | <<locked>> | 100% | 45,049 psi | 74% | 3018 fps | 96.6% |
| Bofors RP5 | <<locked>> | 96% | 52,315 psi | 86% | 3123 fps | 98.7% |
| Bofors RP7 | <<locked>> | 86% | 53,795 psi | 88% | 3028 fps | 99.3% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 45,179 psi | 74% | 2972 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 82% | 54,578 psi | 90% | 3054 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 53,693 psi | 88% | 3100 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 88% | 54,070 psi | 89% | 3071 fps | 98.9% |
| Hodgdon H4831 | <<locked>> | 98% | 52,257 psi | 86% | 3058 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 51,851 psi | 85% | 3048 fps | 96.8% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 51,779 psi | 85% | 3005 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,124 psi | 79% | 3153 fps | 98.8% |
| Hodgdon Superformance | <<locked>> | 86% | 52,721 psi | 87% | 3114 fps | 99.4% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,622 psi | 60% | 1939 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 51,822 psi | 85% | 2972 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,737 psi | 88% | 3005 fps | 99.5% |
| IMR 4350 | <<locked>> | 88% | 51,735 psi | 85% | 3009 fps | 99.1% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,112 psi | 86% | 3002 fps | 99.4% |
| IMR 4831 | <<locked>> | 92% | 52,170 psi | 86% | 3035 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,389 psi | 89% | 3058 fps | 97.4% |
| IMR 7828 SSC | <<locked>> | 96% | 54,592 psi | 90% | 3173 fps | 98.1% |
| Lovex S065 | <<locked>> | 86% | 52,185 psi | 86% | 2995 fps | 99.9% |
| Lovex S070 | <<locked>> | 88% | 53,635 psi | 88% | 3045 fps | 99.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 49,734 psi | 82% | 2989 fps | 99.7% |
| Norma 204 | <<locked>> | 88% | 52,431 psi | 86% | 3064 fps | 98.4% |
| Norma MRP | <<locked>> | 94% | 51,967 psi | 85% | 3150 fps | 99.5% |
| Norma URP | <<locked>> | 88% | 52,794 psi | 87% | 3064 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,201 psi | 89% | 3179 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 88% | 51,764 psi | 85% | 3064 fps | 99.8% |
| Ramshot Magnum | <<locked>> | 96% | 50,908 psi | 84% | 3084 fps | 99.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,405 psi | 61% | 1988 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,491 psi | 89% | 3038 fps | 99.8% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 51,822 psi | 85% | 3091 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,099 psi | 89% | 3104 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,518 psi | 86% | 3133 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 48,414 psi | 79% | 3146 fps | 99.6% |
| Rottweil R 903 | <<locked>> | 84% | 54,723 psi | 90% | 3035 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,040 psi | 87% | 3045 fps | 97.7% |
| Rottweil R 905 | <<locked>> | 94% | 53,867 psi | 88% | 3107 fps | 98.9% |
| Rottweil R 907 | <<locked>> | 86% | 53,795 psi | 88% | 3028 fps | 99.3% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,185 psi | 86% | 2995 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 88% | 53,635 psi | 88% | 3045 fps | 99.7% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 52,750 psi | 87% | 3041 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 55,114 psi | 90% | 2907 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 51,648 psi | 85% | 2946 fps | 99.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,417 psi | 88% | 3100 fps | 98.8% |
| Somchem S355 | <<locked>> | 84% | 54,563 psi | 90% | 3031 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 54,795 psi | 90% | 3035 fps | 97.3% |
| Somchem S365 | <<locked>> | 90% | 52,591 psi | 86% | 3064 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,462 psi | 89% | 3081 fps | 99.4% |
| Unknown powder | <<locked>> | 86% | 53,142 psi | 87% | 3068 fps | 100% |
| Vihtavuori N150 | <<locked>> | 84% | 52,417 psi | 86% | 2949 fps | 100% |
| Vihtavuori N160 | <<locked>> | 88% | 54,694 psi | 90% | 3058 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 54,128 psi | 89% | 3058 fps | 99.2% |
| Vihtavuori N550 | <<locked>> | 88% | 53,969 psi | 89% | 3064 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 51,953 psi | 85% | 3077 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 52,112 psi | 86% | 3140 fps | 97.1% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 51,517 psi | 85% | 3110 fps | 97.3% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,360 psi | 89% | 3018 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,693 psi | 88% | 3100 fps | 99.6% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 53,664 psi | 88% | 3241 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,402 psi | 86% | 3038 fps | 98.5% |
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 2700 | <<locked>> | 80% | 47,688 psi | 78% | 2871 fps | 98.3% |
| Accurate 3100 | <<locked>> | 82% | 31,966 psi | 52% | 2608 fps | 95.6% |
| Accurate 4350 | <<locked>> | 80% | 40,669 psi | 67% | 2835 fps | 99.4% |
| ADI AR 2208 | <<locked>> | 80% | 49,472 psi | 81% | 2943 fps | 100% |
| ADI AR 2209 | <<locked>> | 84% | 39,320 psi | 65% | 2818 fps | 95.2% |
| ADI AR 2213 | 77.5 gr | 90% | 43,076 psi | 71% | 2933 fps | 95% |
| ADI AR 2225 | <<locked>> | 96% | 34,055 psi | 56% | 2756 fps | 95.1% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,285 psi | 83% | 2966 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,537 psi | 65% | 2851 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,455 psi | 75% | 2982 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 84% | 39,189 psi | 64% | 2815 fps | 95.3% |
| Alliant Reloder-22 | <<locked>> | 88% | 39,813 psi | 65% | 2871 fps | 95.7% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,834 psi | 47% | 2582 fps | 97.9% |
| Alliant Reloder-25 | <<locked>> | 86% | 30,806 psi | 51% | 2657 fps | 95.6% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,140 psi | 51% | 2710 fps | 96.7% |
| Bofors RP15 | <<locked>> | 90% | 39,276 psi | 64% | 2858 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 50,879 psi | 84% | 2979 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 42,032 psi | 69% | 2953 fps | 95.7% |
| Bofors RP5 | <<locked>> | 88% | 39,813 psi | 65% | 2871 fps | 95.7% |
| Bofors RP7 | <<locked>> | 80% | 44,382 psi | 73% | 2851 fps | 97.8% |
| Hodgdon H1000 | <<locked>> | 98% | 42,163 psi | 69% | 2904 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 51,111 psi | 84% | 2995 fps | 100% |
| Hodgdon H414 | <<locked>> | 80% | 46,673 psi | 77% | 2969 fps | 98.7% |
| Hodgdon H4350 | <<locked>> | 80% | 41,771 psi | 69% | 2831 fps | 96.5% |
| Hodgdon H4831 | <<locked>> | 94% | 45,788 psi | 75% | 2933 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 45,223 psi | 74% | 2923 fps | 95% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 36,999 psi | 61% | 2730 fps | 99.7% |
| Hodgdon Retumbo | <<locked>> | 92% | 36,811 psi | 60% | 2874 fps | 95% |
| Hodgdon Superformance | <<locked>> | 80% | 41,916 psi | 69% | 2907 fps | 97.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,398 psi | 45% | 1736 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,704 psi | 80% | 2920 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,427 psi | 78% | 2890 fps | 98.8% |
| IMR 4350 | <<locked>> | 80% | 40,045 psi | 66% | 2776 fps | 96.7% |
| IMR 4451 Enduron | <<locked>> | 80% | 45,847 psi | 75% | 2884 fps | 98.5% |
| IMR 4831 | <<locked>> | 80% | 35,273 psi | 58% | 2697 fps | 98.4% |
| IMR 4955 Enduron | <<locked>> | 88% | 44,817 psi | 74% | 2877 fps | 95.1% |
| IMR 7828 SSC | <<locked>> | 90% | 44,106 psi | 72% | 2969 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 43,149 psi | 71% | 2828 fps | 99% |
| Lovex S070 | <<locked>> | 80% | 41,495 psi | 68% | 2812 fps | 97.8% |
| Lovex S071 | <<locked>> | 86% | 31,314 psi | 51% | 2589 fps | 95.3% |
| Norma 204 | <<locked>> | 80% | 39,581 psi | 65% | 2802 fps | 95.2% |
| Norma MRP | 74.6 gr | 84% | 36,158 psi | 59% | 2812 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 40,451 psi | 66% | 2831 fps | 99.3% |
| Ramshot Grand | <<locked>> | 88% | 43,047 psi | 71% | 2959 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 39,218 psi | 64% | 2818 fps | 97.9% |
| Ramshot Magnum | <<locked>> | 88% | 37,289 psi | 61% | 2799 fps | 95.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,847 psi | 46% | 1775 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,111 psi | 84% | 2982 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,298 psi | 79% | 3031 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 40,741 psi | 67% | 2858 fps | 99.2% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 39,363 psi | 65% | 2871 fps | 98.9% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,129 psi | 59% | 2851 fps | 96.1% |
| Rottweil R 903 | <<locked>> | 80% | 47,834 psi | 79% | 2923 fps | 100% |
| Rottweil R 904 | <<locked>> | 86% | 43,671 psi | 72% | 2864 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 84% | 38,363 psi | 63% | 2795 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 44,382 psi | 73% | 2851 fps | 97.8% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,149 psi | 71% | 2828 fps | 99% |
| Shooters World SW4350 | <<locked>> | 80% | 41,495 psi | 68% | 2812 fps | 97.8% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,211 psi | 81% | 2982 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,660 psi | 80% | 2812 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,337 psi | 70% | 2769 fps | 97.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 84% | 38,014 psi | 62% | 2789 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 47,877 psi | 79% | 2920 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 47,732 psi | 78% | 2910 fps | 95.7% |
| Somchem S365 | <<locked>> | 80% | 37,101 psi | 61% | 2785 fps | 100% |
| Somchem S385 | <<locked>> | 82% | 36,376 psi | 60% | 2717 fps | 95.5% |
| Unknown powder | <<locked>> | 80% | 43,453 psi | 71% | 2890 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 80% | 45,919 psi | 75% | 2844 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 41,829 psi | 69% | 2828 fps | 99.5% |
| Vihtavuori N165 | <<locked>> | 88% | 38,435 psi | 63% | 2756 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 41,234 psi | 68% | 2828 fps | 99.3% |
| Vihtavuori N555 | <<locked>> | 80% | 32,213 psi | 53% | 2667 fps | 97.9% |
| Vihtavuori N560 | 80 gr | 90% | 45,310 psi | 74% | 3009 fps | 95.4% |
| Vihtavuori N565 | <<locked>> | 96% | 44,730 psi | 73% | 2979 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 40,973 psi | 67% | 2792 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,673 psi | 77% | 2969 fps | 98.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,411 psi | 42% | 2559 fps | 97.2% |
| Winchester Supreme 780 | <<locked>> | 84% | 39,059 psi | 64% | 2776 fps | 95.3% |
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 78 powders for .300 Lapua Mag. loaded with the .308 | 165gr | Barnes MRX BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,241 fps; across all powders the maximum-charge window runs from 1,939 fps to 3,241 fps. ADI AR 2225 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 165.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-25, Bofors RP15 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. Norma MRP, Vihtavuori N560, ADI AR 2213 rank at the top here: for .300 Lapua Mag. with the .308 | 165gr | Barnes MRX BT 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.