Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC bullet and 76 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, 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>> | 82% | 53,316 psi | 88% | 3241 fps | 97.8% |
| Accurate 3100 | <<locked>> | 98% | 52,025 psi | 85% | 3287 fps | 99% |
| Accurate 4064 | <<locked>> | 82% | 52,721 psi | 87% | 3245 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 53,708 psi | 88% | 3353 fps | 99.9% |
| ADI AR 2208 | <<locked>> | 84% | 52,808 psi | 87% | 3278 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 96% | 54,766 psi | 90% | 3392 fps | 97.4% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 53,635 psi | 88% | 3304 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 53,693 psi | 88% | 3327 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 54,505 psi | 89% | 3422 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 51,967 psi | 85% | 3383 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,230 psi | 89% | 3379 fps | 97.4% |
| Alliant Reloder-22 | <<locked>> | 98% | 51,851 psi | 85% | 3376 fps | 97.1% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,214 psi | 86% | 3373 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,440 psi | 75% | 3274 fps | 98.7% |
| Alliant Reloder-26 | <<locked>> | 96% | 52,460 psi | 86% | 3455 fps | 99.9% |
| Bofors RP15ᴾ | <<locked>> | 100% | 50,647 psi | 83% | 3353 fps | 96.7% |
| Bofors RP3 | <<locked>> | 84% | 54,592 psi | 90% | 3320 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 51,851 psi | 85% | 3376 fps | 97.1% |
| Bofors RP7 | <<locked>> | 88% | 54,012 psi | 89% | 3301 fps | 98.1% |
| Hodgdon H380 | <<locked>> | 84% | 54,926 psi | 90% | 3337 fps | 99.8% |
| Hodgdon H414 | <<locked>> | 88% | 52,301 psi | 86% | 3343 fps | 98.4% |
| Hodgdon H4350 | <<locked>> | 86% | 52,040 psi | 85% | 3297 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 94% | 54,940 psi | 90% | 3333 fps | 100% |
| Hodgdon Superformance | <<locked>> | 88% | 52,402 psi | 86% | 3373 fps | 98.2% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,390 psi | 60% | 2149 fps | 100% |
| IMR 4064 | <<locked>> | 82% | 52,257 psi | 86% | 3261 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 82% | 54,795 psi | 90% | 3291 fps | 98.7% |
| IMR 4350 | <<locked>> | 90% | 51,706 psi | 85% | 3271 fps | 97.8% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,185 psi | 86% | 3268 fps | 98.2% |
| IMR 4831 | <<locked>> | 92% | 54,302 psi | 89% | 3343 fps | 99.9% |
| IMR 7828 SSCᴾ | <<locked>> | 100% | 53,708 psi | 88% | 3412 fps | 96% |
| Lovex S062 | <<locked>> | 82% | 52,431 psi | 86% | 3255 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,373 psi | 86% | 3264 fps | 99.2% |
| Lovex S070 | <<locked>> | 90% | 53,606 psi | 88% | 3307 fps | 98.7% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,137 psi | 76% | 3173 fps | 98% |
| Norma 203B | <<locked>> | 82% | 53,026 psi | 87% | 3310 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,373 psi | 86% | 3320 fps | 96.7% |
| Norma MRP | <<locked>> | 98% | 55,085 psi | 90% | 3471 fps | 98.9% |
| Norma URP | <<locked>> | 90% | 52,417 psi | 86% | 3333 fps | 99.8% |
| Ramshot Big Game | <<locked>> | 82% | 53,809 psi | 88% | 3333 fps | 100% |
| Ramshot Grandᴾ | <<locked>> | 100% | 54,215 psi | 89% | 3428 fps | 96.5% |
| Ramshot Hunter | <<locked>> | 92% | 54,940 psi | 90% | 3392 fps | 99.3% |
| Ramshot Magnumᴾ | <<locked>> | 100% | 48,646 psi | 80% | 3284 fps | 97.1% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 36,912 psi | 61% | 2195 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 84% | 54,824 psi | 90% | 3317 fps | 99.1% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 51,329 psi | 84% | 3373 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 53,722 psi | 88% | 3376 fps | 99.8% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,199 psi | 86% | 3399 fps | 99.7% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 44,715 psi | 73% | 3294 fps | 97% |
| Rottweil R 902 | <<locked>> | 82% | 54,360 psi | 89% | 3271 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 54,636 psi | 90% | 3317 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 52,910 psi | 87% | 3297 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 96% | 53,548 psi | 88% | 3366 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 88% | 54,012 psi | 89% | 3301 fps | 98.1% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,373 psi | 86% | 3264 fps | 99.2% |
| Shooters World Precision | <<locked>> | 82% | 52,431 psi | 86% | 3255 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 53,606 psi | 88% | 3307 fps | 98.7% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 52,663 psi | 86% | 3317 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,040 psi | 85% | 3143 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 51,967 psi | 85% | 3209 fps | 98.3% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,084 psi | 87% | 3360 fps | 97.3% |
| Somchem S355 | <<locked>> | 86% | 54,433 psi | 89% | 3310 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 51,938 psi | 85% | 3340 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,099 psi | 89% | 3337 fps | 98.2% |
| Vihtavuori N135 | <<locked>> | 82% | 54,592 psi | 90% | 3225 fps | 100% |
| Vihtavuori N140 | <<locked>> | 82% | 54,897 psi | 90% | 3241 fps | 100% |
| Vihtavuori N150 | <<locked>> | 86% | 52,446 psi | 86% | 3228 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 54,462 psi | 89% | 3330 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 53,592 psi | 88% | 3304 fps | 97.8% |
| Vihtavuori N540 | <<locked>> | 82% | 53,229 psi | 87% | 3232 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 53,809 psi | 88% | 3333 fps | 99.8% |
| Vihtavuori N555 | <<locked>> | 98% | 54,766 psi | 90% | 3402 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,360 psi | 89% | 3291 fps | 100% |
| Winchester 760 | <<locked>> | 88% | 52,475 psi | 86% | 3346 fps | 98.4% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 47,645 psi | 78% | 3432 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 98% | 54,360 psi | 89% | 3327 fps | 97.3% |
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% | 50,024 psi | 82% | 3182 fps | 97.2% |
| Accurate 3100 | <<locked>> | 88% | 36,709 psi | 60% | 2959 fps | 95.3% |
| Accurate 4064 | <<locked>> | 80% | 49,545 psi | 81% | 3192 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 37,782 psi | 62% | 3015 fps | 97.3% |
| ADI AR 2208 | <<locked>> | 80% | 46,543 psi | 76% | 3156 fps | 99.5% |
| ADI AR 2209 | <<locked>> | 92% | 48,051 psi | 79% | 3258 fps | 95.8% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,239 psi | 78% | 3186 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,328 psi | 83% | 3261 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 80% | 36,811 psi | 60% | 3031 fps | 97.4% |
| Alliant Reloder-17 | <<locked>> | 80% | 41,959 psi | 69% | 3179 fps | 99.7% |
| Alliant Reloder-19 | <<locked>> | 92% | 47,529 psi | 78% | 3248 fps | 95.8% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,063 psi | 74% | 3235 fps | 95.2% |
| Alliant Reloder-23 | <<locked>> | 82% | 28,790 psi | 47% | 2795 fps | 95.6% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,056 psi | 58% | 2999 fps | 95.1% |
| Alliant Reloder-26 | 81.1 gr | 84% | 33,446 psi | 55% | 2999 fps | 95.3% |
| Bofors RP15 | <<locked>> | 98% | 47,355 psi | 78% | 3284 fps | 95.8% |
| Bofors RP3 | <<locked>> | 80% | 47,630 psi | 78% | 3199 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,063 psi | 74% | 3235 fps | 95.2% |
| Bofors RP7 | <<locked>> | 80% | 41,771 psi | 69% | 3041 fps | 95.2% |
| Hodgdon H380 | <<locked>> | 80% | 48,008 psi | 79% | 3205 fps | 99.1% |
| Hodgdon H414 | <<locked>> | 80% | 39,769 psi | 65% | 3068 fps | 95.2% |
| Hodgdon H4350 | <<locked>> | 82% | 45,542 psi | 75% | 3163 fps | 95.5% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,272 psi | 56% | 2907 fps | 98% |
| Hodgdon Superformance | <<locked>> | 82% | 41,858 psi | 69% | 3150 fps | 95.5% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,108 psi | 45% | 1926 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 48,936 psi | 80% | 3196 fps | 99.8% |
| IMR 4166 Enduron | <<locked>> | 80% | 51,242 psi | 84% | 3225 fps | 98.1% |
| IMR 4350 | <<locked>> | 84% | 42,612 psi | 70% | 3077 fps | 95.5% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,207 psi | 71% | 3077 fps | 96.1% |
| IMR 4831 | <<locked>> | 80% | 36,376 psi | 60% | 2966 fps | 97% |
| IMR 7828 SSC | <<locked>> | 98% | 50,198 psi | 82% | 3340 fps | 95% |
| Lovex S062 | <<locked>> | 80% | 49,284 psi | 81% | 3199 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 40,756 psi | 67% | 3022 fps | 96.9% |
| Lovex S070 | <<locked>> | 80% | 39,044 psi | 64% | 2992 fps | 95.1% |
| Lovex S071 | <<locked>> | 94% | 37,869 psi | 62% | 2989 fps | 95.7% |
| Norma 203B | <<locked>> | 80% | 49,690 psi | 82% | 3248 fps | 99.9% |
| Norma 204 | <<locked>> | 88% | 48,776 psi | 80% | 3248 fps | 95.9% |
| Norma MRP | 84.3 gr | 90% | 41,365 psi | 68% | 3182 fps | 95.6% |
| Norma URP | <<locked>> | 80% | 37,637 psi | 62% | 3015 fps | 97.2% |
| Ramshot Big Game | <<locked>> | 80% | 50,241 psi | 82% | 3271 fps | 99.9% |
| Ramshot Grand | <<locked>> | 98% | 50,488 psi | 83% | 3356 fps | 95.5% |
| Ramshot Hunter | <<locked>> | 80% | 36,535 psi | 60% | 2989 fps | 95% |
| Ramshot Magnum | <<locked>> | 96% | 41,887 psi | 69% | 3133 fps | 95% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,630 psi | 45% | 1972 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 47,935 psi | 79% | 3186 fps | 98% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,585 psi | 73% | 3248 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 37,710 psi | 62% | 3035 fps | 97% |
| ReloadSwiss RS 70 | 76.5 gr | 80% | 36,550 psi | 60% | 3035 fps | 96.2% |
| ReloadSwiss RS 76 | <<locked>> | 98% | 41,640 psi | 68% | 3212 fps | 95.8% |
| Rottweil R 902 | <<locked>> | 80% | 51,111 psi | 84% | 3215 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 44,875 psi | 74% | 3136 fps | 99.8% |
| Rottweil R 904 | <<locked>> | 92% | 49,545 psi | 81% | 3232 fps | 95% |
| Rottweil R 905 | <<locked>> | 92% | 46,702 psi | 77% | 3228 fps | 95.8% |
| Rottweil R 907 | <<locked>> | 80% | 41,771 psi | 69% | 3041 fps | 95.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 40,756 psi | 67% | 3022 fps | 96.9% |
| Shooters World Precision | <<locked>> | 80% | 49,284 psi | 81% | 3199 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,044 psi | 64% | 2992 fps | 95.1% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,021 psi | 76% | 3192 fps | 99.7% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 45,890 psi | 75% | 3038 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 39,914 psi | 66% | 2956 fps | 95.4% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 46,282 psi | 76% | 3222 fps | 95.6% |
| Somchem S355 | <<locked>> | 80% | 45,107 psi | 74% | 3133 fps | 99.8% |
| Somchem S365 | <<locked>> | 80% | 33,997 psi | 56% | 2959 fps | 99.1% |
| Somchem S385 | <<locked>> | 88% | 41,553 psi | 68% | 3077 fps | 95.1% |
| Vihtavuori N135 | <<locked>> | 80% | 51,213 psi | 84% | 3173 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 51,648 psi | 85% | 3186 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 43,105 psi | 71% | 3054 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 38,928 psi | 64% | 3012 fps | 97.6% |
| Vihtavuori N165 | <<locked>> | 94% | 43,714 psi | 72% | 3110 fps | 95.4% |
| Vihtavuori N540 | <<locked>> | 80% | 49,951 psi | 82% | 3176 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,537 psi | 63% | 3012 fps | 97.2% |
| Vihtavuori N555 | <<locked>> | 82% | 31,879 psi | 52% | 2890 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,276 psi | 63% | 2979 fps | 99.3% |
| Winchester 760 | <<locked>> | 80% | 39,929 psi | 66% | 3074 fps | 95.2% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,325 psi | 45% | 2825 fps | 95.4% |
| Winchester Supreme 780 | <<locked>> | 94% | 47,094 psi | 77% | 3189 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 89 powders for .300 Lapua Mag. loaded with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC. Norma MRP delivers the highest muzzle velocity at 3,471 fps; across all powders the maximum-charge window runs from 2,149 fps to 3,471 fps. ADI AR 2225 gives the best case fill at 100 %, and 89 of the 89 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 135.0 gr projectile in 0.308" calls for a 1:16.0 twist; slower twists will usually not stabilise this weight. ADI AR 2225, Alliant Reloder-23, 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, Norma MRP, ReloadSwiss RS 70 rank at the top here: for .300 Lapua Mag. with the .308 | 135gr | Alaska Bullet Works Kodiak SP SPBC they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2225, Baschieri & Pellagri 109, Bofors RP30 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.