Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 165gr | Remington SP Extended-Range BT bullet and 74 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Accurate High Country 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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Max Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 51,547 psi | 85% | 3018 fps | 99.8% |
| Accurate 4350 | <<locked>> | 86% | 53,069 psi | 87% | 3064 fps | 100% |
| Accurate High Country | <<locked>> | 92% | 52,924 psi | 87% | 3169 fps | 98% |
| Accurate MAGPRO | <<locked>> | 94% | 53,751 psi | 88% | 3169 fps | 97% |
| ADI AR 2208 | <<locked>> | 82% | 54,578 psi | 90% | 3025 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 53,940 psi | 89% | 3114 fps | 98.8% |
| ADI AR 2213 | <<locked>> | 94% | 51,576 psi | 85% | 3107 fps | 97.5% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 46,195 psi | 76% | 2989 fps | 96.5% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,060 psi | 67% | 2943 fps | 98.2% |
| Alliant Power Pro Varmint | <<locked>> | 92% | 54,128 psi | 89% | 3110 fps | 98.9% |
| Alliant Reloder-16 | <<locked>> | 88% | 53,780 psi | 88% | 3120 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 54,969 psi | 90% | 3136 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 53,461 psi | 88% | 3104 fps | 98.8% |
| Alliant Reloder-22 | <<locked>> | 96% | 55,071 psi | 90% | 3169 fps | 99.1% |
| Alliant Reloder-23 | <<locked>> | 96% | 52,504 psi | 86% | 3091 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 51,779 psi | 85% | 3146 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 52,460 psi | 86% | 3176 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 54,056 psi | 89% | 3153 fps | 98.9% |
| Bofors RP30ᴾ | <<locked>> | 100% | 47,601 psi | 78% | 3064 fps | 97.3% |
| Bofors RP5 | <<locked>> | 96% | 55,071 psi | 90% | 3169 fps | 99.1% |
| Bofors RP7 | <<locked>> | 84% | 52,504 psi | 86% | 3005 fps | 99.2% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 50,966 psi | 84% | 3087 fps | 98.2% |
| Hodgdon H414 | <<locked>> | 86% | 54,810 psi | 90% | 3117 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 84% | 54,027 psi | 89% | 3071 fps | 99% |
| Hodgdon H4831 | <<locked>> | 92% | 51,692 psi | 85% | 3048 fps | 96.9% |
| Hodgdon H4831 SC | <<locked>> | 94% | 54,128 psi | 89% | 3091 fps | 97.4% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 54,215 psi | 89% | 3041 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 50,618 psi | 83% | 3202 fps | 99.3% |
| Hodgdon Superformance | <<locked>> | 84% | 51,329 psi | 84% | 3087 fps | 99.3% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1952 fps | 100% |
| IMR 4350 | <<locked>> | 88% | 53,853 psi | 88% | 3045 fps | 99.4% |
| IMR 4451 Enduron | <<locked>> | 84% | 53,998 psi | 89% | 3035 fps | 99.6% |
| IMR 4831 | <<locked>> | 88% | 53,447 psi | 88% | 3051 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 53,156 psi | 87% | 3038 fps | 97.3% |
| IMR 7828 SSC | <<locked>> | 96% | 52,895 psi | 87% | 3146 fps | 97.9% |
| Lovex S065 | <<locked>> | 86% | 54,505 psi | 89% | 3031 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 52,649 psi | 86% | 3025 fps | 99.6% |
| Lovex S071ᴾ | <<locked>> | 100% | 52,591 psi | 86% | 3035 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 54,607 psi | 90% | 3100 fps | 98.8% |
| Norma MRP | <<locked>> | 94% | 54,810 psi | 90% | 3192 fps | 99.8% |
| Norma URP | <<locked>> | 86% | 51,793 psi | 85% | 3048 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 53,519 psi | 88% | 3166 fps | 98.3% |
| Ramshot Hunter | <<locked>> | 88% | 54,041 psi | 89% | 3104 fps | 99.9% |
| Ramshot Magnum | <<locked>> | 98% | 51,677 psi | 85% | 3097 fps | 99.3% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,579 psi | 62% | 1995 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 54,404 psi | 89% | 3127 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 53,098 psi | 87% | 3087 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 54,998 psi | 90% | 3173 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 51,300 psi | 84% | 3202 fps | 99.9% |
| Rottweil R 903 | <<locked>> | 82% | 53,417 psi | 88% | 3012 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 51,938 psi | 85% | 3025 fps | 97.6% |
| Rottweil R 905 | <<locked>> | 92% | 52,852 psi | 87% | 3091 fps | 98.8% |
| Rottweil R 907 | <<locked>> | 84% | 52,504 psi | 86% | 3005 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 86% | 54,505 psi | 89% | 3031 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 52,649 psi | 86% | 3025 fps | 99.6% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 54,897 psi | 90% | 3071 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 53,635 psi | 88% | 2884 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 53,882 psi | 88% | 2982 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 52,417 psi | 86% | 3084 fps | 98.8% |
| Somchem S355 | <<locked>> | 82% | 53,417 psi | 88% | 3009 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 53,403 psi | 88% | 3015 fps | 97.2% |
| Somchem S365 | <<locked>> | 88% | 51,663 psi | 85% | 3048 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 53,519 psi | 88% | 3061 fps | 99.4% |
| Vihtavuori N150 | <<locked>> | 84% | 54,578 psi | 90% | 2979 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,548 psi | 88% | 3038 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 52,968 psi | 87% | 3038 fps | 99.1% |
| Vihtavuori N550 | <<locked>> | 86% | 52,707 psi | 87% | 3041 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 54,665 psi | 90% | 3117 fps | 100% |
| Vihtavuori N560 | <<locked>> | 94% | 54,781 psi | 90% | 3186 fps | 97.8% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 54,346 psi | 89% | 3156 fps | 97.9% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 53,011 psi | 87% | 2995 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 55,027 psi | 90% | 3120 fps | 99.8% |
| Winchester StaBALL HD | <<locked>> | 98% | 53,055 psi | 87% | 3225 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 53,345 psi | 88% | 3054 fps | 98.7% |
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% | 32,068 psi | 53% | 2605 fps | 95.7% |
| Accurate 4350 | <<locked>> | 80% | 43,192 psi | 71% | 2884 fps | 99.7% |
| Accurate High Country | 77.9 gr | 86% | 42,728 psi | 70% | 2966 fps | 95.5% |
| Accurate MAGPRO | <<locked>> | 90% | 46,630 psi | 77% | 3031 fps | 95.2% |
| ADI AR 2208 | <<locked>> | 80% | 51,271 psi | 84% | 2972 fps | 100% |
| ADI AR 2209 | <<locked>> | 82% | 38,609 psi | 63% | 2799 fps | 95.1% |
| ADI AR 2213 | <<locked>> | 90% | 45,063 psi | 74% | 2976 fps | 95.8% |
| ADI AR 2217 | <<locked>> | 98% | 43,250 psi | 71% | 2927 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 94% | 33,866 psi | 56% | 2749 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 82% | 38,928 psi | 64% | 2802 fps | 95.3% |
| Alliant Reloder-16 | <<locked>> | 80% | 41,466 psi | 68% | 2894 fps | 99.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 47,703 psi | 78% | 3022 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 82% | 38,551 psi | 63% | 2795 fps | 95.2% |
| Alliant Reloder-22 | <<locked>> | 86% | 39,189 psi | 64% | 2854 fps | 95.6% |
| Alliant Reloder-23 | <<locked>> | 80% | 30,792 psi | 51% | 2638 fps | 98.7% |
| Alliant Reloder-25 | <<locked>> | 84% | 30,719 psi | 50% | 2651 fps | 95.7% |
| Alliant Reloder-26 | 74.7 gr | 80% | 33,388 psi | 55% | 2769 fps | 97.7% |
| Bofors RP15 | <<locked>> | 88% | 38,841 psi | 64% | 2844 fps | 95.3% |
| Bofors RP30 | <<locked>> | 96% | 41,626 psi | 68% | 2940 fps | 95.6% |
| Bofors RP5 | <<locked>> | 86% | 39,189 psi | 64% | 2854 fps | 95.6% |
| Bofors RP7 | <<locked>> | 80% | 46,282 psi | 76% | 2890 fps | 98.3% |
| Hodgdon H1000 | <<locked>> | 94% | 41,423 psi | 68% | 2887 fps | 95.6% |
| Hodgdon H414 | <<locked>> | 80% | 44,904 psi | 74% | 2933 fps | 98.5% |
| Hodgdon H4350 | <<locked>> | 80% | 47,485 psi | 78% | 2949 fps | 98% |
| Hodgdon H4831 | <<locked>> | 88% | 45,165 psi | 74% | 2920 fps | 95.2% |
| Hodgdon H4831 SC | <<locked>> | 90% | 47,297 psi | 78% | 2966 fps | 95.8% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 39,015 psi | 64% | 2769 fps | 99.9% |
| Hodgdon Retumbo | <<locked>> | 92% | 38,812 psi | 64% | 2927 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 44,135 psi | 72% | 2949 fps | 98.2% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,557 psi | 45% | 1745 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 41,771 psi | 69% | 2815 fps | 97.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 47,543 psi | 78% | 2917 fps | 98.8% |
| IMR 4831 | <<locked>> | 80% | 41,147 psi | 68% | 2828 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 86% | 43,961 psi | 72% | 2861 fps | 95% |
| IMR 7828 SSC | <<locked>> | 90% | 43,207 psi | 71% | 2949 fps | 95.3% |
| Lovex S065 | <<locked>> | 80% | 45,252 psi | 74% | 2867 fps | 99.3% |
| Lovex S070 | <<locked>> | 80% | 43,468 psi | 71% | 2851 fps | 98.4% |
| Lovex S071 | <<locked>> | 84% | 31,459 psi | 52% | 2585 fps | 95.4% |
| Norma 204 | <<locked>> | 80% | 41,524 psi | 68% | 2848 fps | 96% |
| Norma MRP | <<locked>> | 82% | 35,766 psi | 59% | 2799 fps | 95.9% |
| Norma URP | <<locked>> | 80% | 42,453 psi | 70% | 2871 fps | 99.6% |
| Ramshot Grand | <<locked>> | 90% | 43,091 psi | 71% | 2959 fps | 95.7% |
| Ramshot Hunter | <<locked>> | 80% | 41,278 psi | 68% | 2861 fps | 98.4% |
| Ramshot Magnum | <<locked>> | 88% | 35,795 psi | 59% | 2759 fps | 95.2% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,210 psi | 46% | 1788 fps | 100% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 50,647 psi | 83% | 3068 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 43,033 psi | 71% | 2900 fps | 99.6% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 41,350 psi | 68% | 2917 fps | 99.4% |
| ReloadSwiss RS 76 | <<locked>> | 90% | 35,708 psi | 59% | 2835 fps | 96% |
| Rottweil R 903 | <<locked>> | 80% | 50,082 psi | 82% | 2959 fps | 100% |
| Rottweil R 904 | <<locked>> | 84% | 42,728 psi | 70% | 2841 fps | 95.3% |
| Rottweil R 905 | <<locked>> | 82% | 37,826 psi | 62% | 2779 fps | 95.2% |
| Rottweil R 907 | <<locked>> | 80% | 46,282 psi | 76% | 2890 fps | 98.3% |
| Shooters World Long Rifle | <<locked>> | 80% | 45,252 psi | 74% | 2867 fps | 99.3% |
| Shooters World SW4350 | <<locked>> | 80% | 43,468 psi | 71% | 2851 fps | 98.4% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 51,372 psi | 84% | 3015 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 50,502 psi | 83% | 2838 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 44,179 psi | 73% | 2808 fps | 98.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 82% | 37,492 psi | 62% | 2772 fps | 95% |
| Somchem S355 | <<locked>> | 80% | 50,140 psi | 82% | 2956 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 46,760 psi | 77% | 2890 fps | 95.6% |
| Somchem S365 | <<locked>> | 80% | 39,262 psi | 64% | 2825 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 35,926 psi | 59% | 2703 fps | 95.4% |
| Vihtavuori N150 | <<locked>> | 80% | 47,892 psi | 79% | 2877 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,932 psi | 72% | 2867 fps | 99.7% |
| Vihtavuori N165 | <<locked>> | 86% | 38,000 psi | 62% | 2743 fps | 95.8% |
| Vihtavuori N550 | <<locked>> | 80% | 43,352 psi | 71% | 2871 fps | 99.6% |
| Vihtavuori N555 | <<locked>> | 80% | 34,403 psi | 56% | 2717 fps | 98.6% |
| Vihtavuori N560 | <<locked>> | 88% | 44,353 psi | 73% | 2982 fps | 95.2% |
| Vihtavuori N565 | <<locked>> | 94% | 44,309 psi | 73% | 2966 fps | 95.5% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,018 psi | 71% | 2828 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 45,078 psi | 74% | 2936 fps | 98.5% |
| Winchester StaBALL HD | 71.7 gr | 80% | 27,253 psi | 45% | 2628 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 40,350 psi | 66% | 2805 fps | 95.9% |
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 74 powders for .300 Lapua Mag. loaded with the .308 | 165gr | Remington SP Extended-Range BT. Winchester StaBALL HD delivers the highest muzzle velocity at 3,225 fps; across all powders the maximum-charge window runs from 1,952 fps to 3,225 fps. ADI AR 2217 gives the best case fill at 100 %, and 74 of the 74 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 1:6.0 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. Alliant Reloder-26, Accurate High Country, Winchester StaBALL HD rank at the top here: for .300 Lapua Mag. with the .308 | 165gr | Remington SP Extended-Range 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.