Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 150gr | Norma Kalahari bullet and 81 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Ramshot Grand and IMR 7828 SSC.
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% | 53,142 psi | 87% | 3084 fps | 98.5% |
| Accurate 3100 | <<locked>> | 98% | 54,418 psi | 89% | 3186 fps | 99.7% |
| Accurate 4064 | <<locked>> | 82% | 54,998 psi | 90% | 3127 fps | 100% |
| Accurate 4350 | <<locked>> | 88% | 52,344 psi | 86% | 3182 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 54,650 psi | 90% | 3156 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 53,417 psi | 88% | 3225 fps | 98% |
| ADI AR 2213 | <<locked>> | 98% | 54,708 psi | 90% | 3281 fps | 97.1% |
| Alliant Power Pro Varmint | <<locked>> | 94% | 53,534 psi | 88% | 3222 fps | 98% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 52,315 psi | 86% | 3130 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 90% | 53,156 psi | 87% | 3245 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 54,302 psi | 89% | 3264 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 94% | 52,866 psi | 87% | 3212 fps | 97.9% |
| Alliant Reloder-22 | <<locked>> | 98% | 54,070 psi | 89% | 3278 fps | 98.3% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 54,940 psi | 90% | 3264 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 47,572 psi | 78% | 3189 fps | 99.6% |
| Alliant Reloder-26 | <<locked>> | 94% | 51,256 psi | 84% | 3287 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 53,055 psi | 87% | 3258 fps | 98% |
| Bofors RP3 | <<locked>> | 82% | 53,026 psi | 87% | 3143 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 54,070 psi | 89% | 3278 fps | 98.3% |
| Bofors RP7 | <<locked>> | 86% | 52,431 psi | 86% | 3127 fps | 98.6% |
| Hodgdon H380 | <<locked>> | 82% | 53,345 psi | 88% | 3159 fps | 99.9% |
| Hodgdon H414 | <<locked>> | 84% | 52,054 psi | 85% | 3192 fps | 99% |
| Hodgdon H4350 | <<locked>> | 88% | 52,605 psi | 86% | 3166 fps | 98.1% |
| Hodgdon H4831ᴾ | <<locked>> | 100% | 54,012 psi | 89% | 3205 fps | 96.3% |
| Hodgdon H4831 SC | <<locked>> | 96% | 53,809 psi | 88% | 3202 fps | 96.2% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 53,621 psi | 88% | 3163 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 54,969 psi | 90% | 3205 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 46,485 psi | 76% | 3225 fps | 97.5% |
| Hodgdon Superformance | <<locked>> | 88% | 54,737 psi | 90% | 3271 fps | 99.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,492 psi | 60% | 2034 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 54,186 psi | 89% | 3150 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 53,621 psi | 88% | 3133 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 84% | 52,504 psi | 86% | 3107 fps | 98.9% |
| IMR 4350 | <<locked>> | 90% | 53,563 psi | 88% | 3163 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 53,998 psi | 89% | 3156 fps | 99.1% |
| IMR 4831 | <<locked>> | 94% | 54,056 psi | 89% | 3192 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 94% | 52,881 psi | 87% | 3150 fps | 96.2% |
| IMR 7828 SSC | <<locked>> | 96% | 52,605 psi | 86% | 3255 fps | 96.7% |
| Lovex S062 | <<locked>> | 82% | 54,433 psi | 89% | 3133 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 54,360 psi | 89% | 3156 fps | 99.8% |
| Lovex S070 | <<locked>> | 88% | 52,330 psi | 86% | 3143 fps | 99.1% |
| Lovex S071ᴾ | <<locked>> | 100% | 48,327 psi | 79% | 3081 fps | 99% |
| Norma 203B | <<locked>> | 82% | 55,056 psi | 90% | 3192 fps | 100% |
| Norma 204 | <<locked>> | 90% | 54,375 psi | 89% | 3215 fps | 98% |
| Norma MRP | <<locked>> | 96% | 53,824 psi | 88% | 3307 fps | 99.2% |
| Norma URP | <<locked>> | 90% | 54,665 psi | 90% | 3225 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 52,185 psi | 86% | 3258 fps | 97% |
| Ramshot Hunter | <<locked>> | 90% | 53,563 psi | 88% | 3222 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 98% | 53,156 psi | 87% | 3238 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,260 psi | 61% | 2080 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 53,185 psi | 87% | 3140 fps | 99.4% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 53,708 psi | 88% | 3258 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 88% | 52,402 psi | 86% | 3205 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 54,592 psi | 90% | 3297 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 46,746 psi | 77% | 3222 fps | 98.6% |
| Rottweil R 903 | <<locked>> | 84% | 53,287 psi | 87% | 3143 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 55,056 psi | 90% | 3196 fps | 97.2% |
| Rottweil R 905 | <<locked>> | 94% | 52,170 psi | 86% | 3199 fps | 97.9% |
| Rottweil R 907 | <<locked>> | 86% | 52,431 psi | 86% | 3127 fps | 98.6% |
| Shooters World Long Rifle | <<locked>> | 88% | 54,360 psi | 89% | 3156 fps | 99.8% |
| Shooters World Precision | <<locked>> | 82% | 54,433 psi | 89% | 3133 fps | 100% |
| Shooters World SW4350 | <<locked>> | 88% | 52,330 psi | 86% | 3143 fps | 99.1% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 54,665 psi | 90% | 3202 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 53,867 psi | 88% | 3018 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 53,838 psi | 88% | 3100 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 94% | 51,721 psi | 85% | 3192 fps | 97.8% |
| Somchem S355 | <<locked>> | 84% | 53,200 psi | 87% | 3136 fps | 100% |
| Somchem S361 | <<locked>> | 92% | 53,185 psi | 87% | 3123 fps | 96% |
| Somchem S365 | <<locked>> | 92% | 54,447 psi | 89% | 3228 fps | 100% |
| Somchem S385 | <<locked>> | 94% | 52,837 psi | 87% | 3173 fps | 98.7% |
| Unknown powder | <<locked>> | 88% | 55,071 psi | 90% | 3228 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 90% | 54,984 psi | 90% | 3123 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 51,880 psi | 85% | 3133 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,896 psi | 88% | 3173 fps | 98.6% |
| Vihtavuori N550 | <<locked>> | 86% | 52,489 psi | 86% | 3186 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 96% | 53,577 psi | 88% | 3235 fps | 100% |
| Vihtavuori N560 | <<locked>> | 98% | 54,462 psi | 89% | 3304 fps | 96.7% |
| Winchester 6.5 StaBALL | <<locked>> | 88% | 52,634 psi | 86% | 3117 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,054 psi | 85% | 3192 fps | 99% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 50,966 psi | 84% | 3340 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,607 psi | 90% | 3196 fps | 98.2% |
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% | 46,601 psi | 77% | 2963 fps | 97.3% |
| Accurate 3100 | <<locked>> | 84% | 33,707 psi | 55% | 2756 fps | 95.2% |
| Accurate 4064 | <<locked>> | 80% | 51,561 psi | 85% | 3071 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 39,726 psi | 65% | 2930 fps | 98.6% |
| ADI AR 2208 | <<locked>> | 80% | 48,370 psi | 79% | 3048 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 88% | 43,758 psi | 72% | 3031 fps | 95.6% |
| ADI AR 2213 | <<locked>> | 94% | 47,790 psi | 78% | 3143 fps | 95.3% |
| Alliant Power Pro Varmint | <<locked>> | 88% | 43,947 psi | 72% | 3031 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 49,110 psi | 81% | 3074 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 38,392 psi | 63% | 2940 fps | 98.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 43,903 psi | 72% | 3077 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 43,468 psi | 71% | 3022 fps | 95.6% |
| Alliant Reloder-22 | <<locked>> | 90% | 41,205 psi | 68% | 3015 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 28,326 psi | 47% | 2664 fps | 96.6% |
| Alliant Reloder-25 | <<locked>> | 90% | 34,272 psi | 56% | 2861 fps | 96.1% |
| Alliant Reloder-26 | 74.6 gr | 80% | 30,429 psi | 50% | 2782 fps | 95% |
| Bofors RP15 | <<locked>> | 94% | 43,584 psi | 72% | 3068 fps | 95.7% |
| Bofors RP3 | <<locked>> | 80% | 49,530 psi | 81% | 3084 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 41,205 psi | 68% | 3015 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 43,352 psi | 71% | 2943 fps | 96.7% |
| Hodgdon H380 | <<locked>> | 80% | 49,893 psi | 82% | 3100 fps | 99.7% |
| Hodgdon H414 | <<locked>> | 80% | 45,223 psi | 74% | 3061 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 80% | 40,785 psi | 67% | 2920 fps | 95.1% |
| Hodgdon H4831 | <<locked>> | 98% | 50,546 psi | 83% | 3140 fps | 95.4% |
| Hodgdon H4831 SC | <<locked>> | 94% | 50,154 psi | 82% | 3133 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 35,911 psi | 59% | 2818 fps | 99.1% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 51,372 psi | 84% | 3146 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 40,712 psi | 67% | 3081 fps | 95.3% |
| Hodgdon Superformance | <<locked>> | 80% | 40,611 psi | 67% | 2986 fps | 96.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,325 psi | 45% | 1821 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 50,850 psi | 83% | 3094 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 47,340 psi | 78% | 3018 fps | 99.9% |
| IMR 4166 Enduron | <<locked>> | 80% | 46,543 psi | 76% | 2992 fps | 97.9% |
| IMR 4350 | <<locked>> | 80% | 38,972 psi | 64% | 2861 fps | 95.3% |
| IMR 4451 Enduron | <<locked>> | 80% | 44,817 psi | 74% | 2979 fps | 97.5% |
| IMR 4831 | <<locked>> | 80% | 34,592 psi | 57% | 2789 fps | 97.4% |
| IMR 4955 Enduron | <<locked>> | 92% | 49,705 psi | 82% | 3087 fps | 95.4% |
| IMR 7828 SSC | 83.8 gr | 94% | 49,211 psi | 81% | 3189 fps | 95.9% |
| Lovex S062 | <<locked>> | 80% | 51,126 psi | 84% | 3081 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 42,337 psi | 70% | 2923 fps | 98.2% |
| Lovex S070 | <<locked>> | 80% | 40,524 psi | 67% | 2900 fps | 96.7% |
| Lovex S071 | <<locked>> | 90% | 34,896 psi | 57% | 2789 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 51,692 psi | 85% | 3133 fps | 100% |
| Norma 204 | <<locked>> | 84% | 44,208 psi | 73% | 3018 fps | 95.6% |
| Norma MRP | <<locked>> | 86% | 37,666 psi | 62% | 2959 fps | 95.3% |
| Norma URP | <<locked>> | 80% | 39,262 psi | 64% | 2920 fps | 98.5% |
| Ramshot Grand | 85.9 gr | 92% | 48,486 psi | 80% | 3182 fps | 96.1% |
| Ramshot Hunter | <<locked>> | 80% | 38,247 psi | 63% | 2907 fps | 96.7% |
| Ramshot Magnum | <<locked>> | 90% | 39,030 psi | 64% | 2943 fps | 95.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,775 psi | 46% | 1864 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 49,821 psi | 82% | 3081 fps | 99% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 46,601 psi | 77% | 3136 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 39,523 psi | 65% | 2946 fps | 98.4% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 38,189 psi | 63% | 2953 fps | 97.8% |
| ReloadSwiss RS 76 | <<locked>> | 94% | 37,695 psi | 62% | 2989 fps | 95.3% |
| Rottweil R 903 | <<locked>> | 80% | 46,644 psi | 77% | 3025 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 48,414 psi | 79% | 3074 fps | 95.7% |
| Rottweil R 905 | <<locked>> | 88% | 42,728 psi | 70% | 3009 fps | 95.6% |
| Rottweil R 907 | <<locked>> | 80% | 43,352 psi | 71% | 2943 fps | 96.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 42,337 psi | 70% | 2923 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 51,126 psi | 84% | 3081 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 40,524 psi | 67% | 2900 fps | 96.7% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 48,008 psi | 79% | 3087 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 47,558 psi | 78% | 2920 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 41,394 psi | 68% | 2861 fps | 96.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 42,351 psi | 70% | 3002 fps | 95.5% |
| Somchem S355 | <<locked>> | 80% | 46,876 psi | 77% | 3025 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 49,806 psi | 82% | 3061 fps | 95.2% |
| Somchem S365 | <<locked>> | 80% | 35,824 psi | 59% | 2874 fps | 99.8% |
| Somchem S385 | <<locked>> | 86% | 40,538 psi | 67% | 2923 fps | 95.8% |
| Unknown powder | <<locked>> | 80% | 42,279 psi | 69% | 2982 fps | 98.6% |
| Vihtavuori N150 | <<locked>> | 80% | 40,263 psi | 66% | 2858 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 42,366 psi | 70% | 2953 fps | 99% |
| Vihtavuori N165 | <<locked>> | 92% | 41,321 psi | 68% | 2930 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 43,033 psi | 71% | 3002 fps | 99.1% |
| Vihtavuori N555 | <<locked>> | 80% | 31,372 psi | 52% | 2749 fps | 96.7% |
| Vihtavuori N560 | <<locked>> | 96% | 50,807 psi | 83% | 3235 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 39,914 psi | 66% | 2884 fps | 99.9% |
| Winchester 760 | <<locked>> | 80% | 45,223 psi | 74% | 3061 fps | 97.7% |
| Winchester StaBALL HD | <<locked>> | 80% | 25,106 psi | 41% | 2628 fps | 95.2% |
| Winchester Supreme 780 | <<locked>> | 88% | 43,903 psi | 72% | 2992 fps | 95.7% |
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 81 powders for .300 Lapua Mag. loaded with the .308 | 150gr | Norma Kalahari. Winchester StaBALL HD delivers the highest muzzle velocity at 3,340 fps; across all powders the maximum-charge window runs from 2,034 fps to 3,340 fps. Alliant Reloder-23 gives the best case fill at 100 %, and 81 of the 81 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 150.0 gr projectile in 0.308" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-23, 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. Alliant Reloder-26, Ramshot Grand, IMR 7828 SSC rank at the top here: for .300 Lapua Mag. with the .308 | 150gr | Norma Kalahari 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.