Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 150gr | Speer Deep Curl Flat Points bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Vihtavuori N560, Norma MRP and ReloadSwiss RS 70.
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 2700 | <<locked>> | 84% | 54,853 psi | 90% | 3123 fps | 98.9% |
| Accurate 3100 | <<locked>> | 96% | 53,127 psi | 87% | 3173 fps | 99.7% |
| Accurate 4350 | <<locked>> | 88% | 54,563 psi | 90% | 3222 fps | 100% |
| ADI AR 2208 | <<locked>> | 82% | 53,055 psi | 87% | 3140 fps | 100% |
| ADI AR 2209 | <<locked>> | 92% | 51,996 psi | 85% | 3209 fps | 97.9% |
| ADI AR 2213 | <<locked>> | 96% | 53,214 psi | 87% | 3264 fps | 97% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 39,508 psi | 65% | 3012 fps | 96.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 53,954 psi | 89% | 3163 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 88% | 51,924 psi | 85% | 3228 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 84% | 52,808 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 55,013 psi | 90% | 3258 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 96% | 52,808 psi | 87% | 3261 fps | 98.3% |
| Alliant Reloder-23 | <<locked>> | 98% | 53,766 psi | 88% | 3248 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 49,661 psi | 82% | 3235 fps | 99.9% |
| Alliant Reloder-26 | <<locked>> | 94% | 53,896 psi | 88% | 3337 fps | 100% |
| Bofors RP15 | <<locked>> | 98% | 51,837 psi | 85% | 3241 fps | 98% |
| Bofors RP3 | <<locked>> | 82% | 54,897 psi | 90% | 3179 fps | 100% |
| Bofors RP5 | <<locked>> | 96% | 52,808 psi | 87% | 3261 fps | 98.3% |
| Bofors RP7 | <<locked>> | 86% | 54,186 psi | 89% | 3166 fps | 99% |
| Hodgdon H380 | <<locked>> | 82% | 55,056 psi | 90% | 3199 fps | 100% |
| Hodgdon H414 | <<locked>> | 84% | 54,012 psi | 89% | 3235 fps | 99.3% |
| Hodgdon H4350 | <<locked>> | 88% | 54,346 psi | 89% | 3205 fps | 98.5% |
| Hodgdon H4831 | <<locked>> | 98% | 52,576 psi | 86% | 3189 fps | 96.2% |
| Hodgdon H4831 SC | <<locked>> | 94% | 52,185 psi | 86% | 3179 fps | 96.1% |
| Hodgdon Hybrid 100V | <<locked>> | 90% | 52,272 psi | 86% | 3146 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 48,689 psi | 80% | 3284 fps | 98.3% |
| Hodgdon Superformance | <<locked>> | 86% | 53,069 psi | 87% | 3248 fps | 99.1% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,753 psi | 60% | 2051 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,127 psi | 86% | 3114 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 53,954 psi | 89% | 3143 fps | 99.2% |
| IMR 4350 | <<locked>> | 88% | 52,112 psi | 86% | 3146 fps | 98.7% |
| IMR 4451 Enduron | <<locked>> | 84% | 52,286 psi | 86% | 3136 fps | 99% |
| IMR 4831 | <<locked>> | 92% | 52,736 psi | 87% | 3176 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 54,839 psi | 90% | 3192 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 96% | 54,839 psi | 90% | 3307 fps | 97.5% |
| Lovex S065 | <<locked>> | 86% | 52,649 psi | 86% | 3133 fps | 99.7% |
| Lovex S070 | <<locked>> | 88% | 54,215 psi | 89% | 3186 fps | 99.4% |
| Lovex S071ᴾ | <<locked>> | 100% | 50,546 psi | 83% | 3127 fps | 99.4% |
| Norma 204 | <<locked>> | 88% | 52,765 psi | 87% | 3199 fps | 97.9% |
| Norma MRP | <<locked>> | 94% | 52,547 psi | 86% | 3287 fps | 99.2% |
| Norma URP | <<locked>> | 88% | 53,287 psi | 87% | 3205 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,636 psi | 90% | 3310 fps | 97.8% |
| Ramshot Hunter | <<locked>> | 88% | 52,098 psi | 86% | 3202 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 96% | 51,576 psi | 85% | 3219 fps | 98.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,333 psi | 61% | 2096 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 54,911 psi | 90% | 3179 fps | 99.6% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 52,141 psi | 86% | 3235 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 54,650 psi | 90% | 3248 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 52,953 psi | 87% | 3274 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 49,095 psi | 81% | 3278 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 82% | 51,605 psi | 85% | 3120 fps | 100% |
| Rottweil R 904 | <<locked>> | 92% | 53,374 psi | 88% | 3176 fps | 97.1% |
| Rottweil R 905 | <<locked>> | 94% | 54,447 psi | 89% | 3245 fps | 98.5% |
| Rottweil R 907 | <<locked>> | 86% | 54,186 psi | 89% | 3166 fps | 99% |
| Shooters World Long Rifle | <<locked>> | 86% | 52,649 psi | 86% | 3133 fps | 99.7% |
| Shooters World SW4350 | <<locked>> | 88% | 54,215 psi | 89% | 3186 fps | 99.4% |
| SNPE Vectan SP 11 | <<locked>> | 82% | 53,040 psi | 87% | 3179 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 52,098 psi | 86% | 2999 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 52,141 psi | 86% | 3081 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 53,998 psi | 89% | 3241 fps | 98.4% |
| Somchem S355 | <<locked>> | 84% | 54,955 psi | 90% | 3173 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 51,634 psi | 85% | 3104 fps | 96% |
| Somchem S365 | <<locked>> | 90% | 53,127 psi | 87% | 3212 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 54,969 psi | 90% | 3219 fps | 99.1% |
| Unknown powder | <<locked>> | 86% | 53,519 psi | 88% | 3209 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 88% | 53,476 psi | 88% | 3107 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 53,896 psi | 88% | 3173 fps | 100% |
| Vihtavuori N165 | <<locked>> | 98% | 52,489 psi | 86% | 3156 fps | 98.5% |
| Vihtavuori N550 | <<locked>> | 86% | 54,433 psi | 89% | 3225 fps | 100% |
| Vihtavuori N555 | <<locked>> | 94% | 52,634 psi | 86% | 3222 fps | 100% |
| Vihtavuori N560 | <<locked>> | 96% | 53,127 psi | 87% | 3287 fps | 96.7% |
| Vihtavuori N565ᴾ | <<locked>> | 100% | 52,054 psi | 85% | 3241 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 54,737 psi | 90% | 3153 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 54,012 psi | 89% | 3235 fps | 99.3% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 54,172 psi | 89% | 3386 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 52,866 psi | 87% | 3173 fps | 98.1% |
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% | 48,167 psi | 79% | 3005 fps | 97.8% |
| Accurate 3100 | <<locked>> | 82% | 32,779 psi | 54% | 2733 fps | 95% |
| Accurate 4350 | <<locked>> | 80% | 41,336 psi | 68% | 2969 fps | 99.1% |
| ADI AR 2208 | <<locked>> | 80% | 49,719 psi | 82% | 3077 fps | 100% |
| ADI AR 2209 | <<locked>> | 86% | 42,511 psi | 70% | 3012 fps | 95.5% |
| ADI AR 2213 | <<locked>> | 92% | 46,485 psi | 76% | 3123 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 98% | 37,043 psi | 61% | 2943 fps | 95.5% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 50,763 psi | 83% | 3110 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 39,885 psi | 65% | 2982 fps | 99.1% |
| Alliant Reloder-17 | <<locked>> | 80% | 45,818 psi | 75% | 3120 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 86% | 42,351 psi | 70% | 3005 fps | 95.5% |
| Alliant Reloder-22 | <<locked>> | 88% | 40,292 psi | 66% | 2999 fps | 95% |
| Alliant Reloder-23 | <<locked>> | 80% | 29,515 psi | 48% | 2707 fps | 97.4% |
| Alliant Reloder-25 | <<locked>> | 88% | 33,518 psi | 55% | 2841 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 80% | 31,821 psi | 52% | 2831 fps | 96% |
| Bofors RP15 | <<locked>> | 92% | 42,511 psi | 70% | 3048 fps | 95.6% |
| Bofors RP3 | <<locked>> | 80% | 51,401 psi | 84% | 3123 fps | 100% |
| Bofors RP5 | <<locked>> | 88% | 40,292 psi | 66% | 2999 fps | 95% |
| Bofors RP7 | <<locked>> | 80% | 44,759 psi | 73% | 2982 fps | 97.2% |
| Hodgdon H380 | <<locked>> | 80% | 51,605 psi | 85% | 3136 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 80% | 47,007 psi | 77% | 3104 fps | 98.3% |
| Hodgdon H4350 | <<locked>> | 80% | 42,221 psi | 69% | 2963 fps | 95.8% |
| Hodgdon H4831 | <<locked>> | 96% | 49,356 psi | 81% | 3127 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 92% | 48,805 psi | 80% | 3114 fps | 95.2% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 37,434 psi | 61% | 2858 fps | 99.5% |
| Hodgdon Retumbo | <<locked>> | 94% | 39,871 psi | 65% | 3064 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 42,293 psi | 69% | 3031 fps | 96.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,412 psi | 45% | 1837 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,979 psi | 80% | 3058 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 80% | 47,790 psi | 78% | 3025 fps | 98.4% |
| IMR 4350 | <<locked>> | 80% | 40,277 psi | 66% | 2900 fps | 96% |
| IMR 4451 Enduron | <<locked>> | 80% | 46,180 psi | 76% | 3015 fps | 98% |
| IMR 4831 | <<locked>> | 80% | 35,897 psi | 59% | 2825 fps | 97.9% |
| IMR 4955 Enduron | <<locked>> | 90% | 48,254 psi | 79% | 3068 fps | 95.3% |
| IMR 7828 SSC | <<locked>> | 92% | 47,819 psi | 79% | 3169 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 43,758 psi | 72% | 2959 fps | 98.6% |
| Lovex S070 | <<locked>> | 80% | 42,061 psi | 69% | 2943 fps | 97.3% |
| Lovex S071 | <<locked>> | 88% | 34,200 psi | 56% | 2772 fps | 95.6% |
| Norma 204 | <<locked>> | 82% | 42,873 psi | 70% | 2995 fps | 95.4% |
| Norma MRP | 78.7 gr | 84% | 36,753 psi | 60% | 2940 fps | 95.2% |
| Norma URP | <<locked>> | 80% | 40,930 psi | 67% | 2963 fps | 98.9% |
| Ramshot Grand | <<locked>> | 90% | 47,050 psi | 77% | 3163 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 39,784 psi | 65% | 2946 fps | 97.3% |
| Ramshot Magnum | <<locked>> | 88% | 38,000 psi | 62% | 2927 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,007 psi | 46% | 1880 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 51,372 psi | 84% | 3117 fps | 99.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 48,631 psi | 80% | 3176 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 41,321 psi | 68% | 2989 fps | 98.9% |
| ReloadSwiss RS 70 | 76.5 gr | 80% | 39,726 psi | 65% | 2999 fps | 98.4% |
| ReloadSwiss RS 76 | <<locked>> | 92% | 36,796 psi | 60% | 2972 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 48,486 psi | 80% | 3064 fps | 100% |
| Rottweil R 904 | <<locked>> | 88% | 46,992 psi | 77% | 3054 fps | 95.6% |
| Rottweil R 905 | <<locked>> | 86% | 41,481 psi | 68% | 2986 fps | 95.4% |
| Rottweil R 907 | <<locked>> | 80% | 44,759 psi | 73% | 2982 fps | 97.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 43,758 psi | 72% | 2959 fps | 98.6% |
| Shooters World SW4350 | <<locked>> | 80% | 42,061 psi | 69% | 2943 fps | 97.3% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 49,690 psi | 82% | 3123 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 48,950 psi | 80% | 2949 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 42,830 psi | 70% | 2897 fps | 97.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 86% | 41,104 psi | 67% | 2979 fps | 95.3% |
| Somchem S355 | <<locked>> | 80% | 48,472 psi | 80% | 3061 fps | 100% |
| Somchem S361 | <<locked>> | 88% | 48,312 psi | 79% | 3041 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 37,463 psi | 62% | 2913 fps | 100% |
| Somchem S385 | <<locked>> | 84% | 39,581 psi | 65% | 2907 fps | 95.7% |
| Unknown powder | <<locked>> | 80% | 43,816 psi | 72% | 3022 fps | 99% |
| Vihtavuori N150 | <<locked>> | 80% | 41,626 psi | 68% | 2890 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 43,990 psi | 72% | 2992 fps | 99.4% |
| Vihtavuori N165 | <<locked>> | 90% | 40,306 psi | 66% | 2913 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 44,657 psi | 73% | 3041 fps | 99.4% |
| Vihtavuori N555 | <<locked>> | 80% | 32,851 psi | 54% | 2792 fps | 97.4% |
| Vihtavuori N560 | 86.2 gr | 94% | 49,516 psi | 81% | 3215 fps | 95.8% |
| Vihtavuori N565 | <<locked>> | 98% | 48,660 psi | 80% | 3176 fps | 95.9% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 41,394 psi | 68% | 2920 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 47,007 psi | 77% | 3104 fps | 98.3% |
| Winchester StaBALL HD | <<locked>> | 80% | 26,165 psi | 43% | 2680 fps | 96.5% |
| Winchester Supreme 780 | <<locked>> | 86% | 42,511 psi | 70% | 2969 fps | 95.6% |
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 84 powders for .300 Lapua Mag. loaded with the .308 | 150gr | Speer Deep Curl Flat Points. Winchester StaBALL HD delivers the highest muzzle velocity at 3,386 fps; across all powders the maximum-charge window runs from 2,051 fps to 3,386 fps. ADI AR 2217 gives the best case fill at 100 %, and 84 of the 84 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. 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. Vihtavuori N560, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Lapua Mag. with the .308 | 150gr | Speer Deep Curl Flat Points they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2217, Baschieri & Pellagri 109, Norma 217 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.