Load Specifications
Load data in caliber .300 Lapua Mag. with .308 | 140gr | Lehigh Defense Controlled Chaos bullet and 80 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Norma MRP, ReloadSwiss RS 70 and Alliant Reloder-26.
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.
A valid access license is required to use the Personalized Load Calculator.
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% | 51,764 psi | 85% | 3150 fps | 97.8% |
| Accurate 3100 | <<locked>> | 98% | 52,620 psi | 86% | 3251 fps | 99.3% |
| Accurate 4064 | <<locked>> | 82% | 53,417 psi | 88% | 3202 fps | 100% |
| Accurate 4350 | <<locked>> | 90% | 54,331 psi | 89% | 3314 fps | 100% |
| ADI AR 2208 | <<locked>> | 84% | 53,258 psi | 87% | 3232 fps | 100% |
| ADI AR 2209 | <<locked>> | 94% | 51,808 psi | 85% | 3287 fps | 97.1% |
| ADI AR 2213 | <<locked>> | 98% | 53,069 psi | 87% | 3337 fps | 96% |
| Alliant Reloder- TS 15.5 | <<locked>> | 84% | 54,186 psi | 89% | 3258 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 82% | 54,230 psi | 89% | 3281 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 92% | 55,085 psi | 90% | 3379 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 86% | 52,591 psi | 86% | 3340 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 96% | 54,766 psi | 90% | 3340 fps | 97.8% |
| Alliant Reloder-22 | <<locked>> | 98% | 52,257 psi | 86% | 3337 fps | 97.5% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 52,794 psi | 87% | 3330 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 45,992 psi | 76% | 3245 fps | 99.1% |
| Alliant Reloder-26 | <<locked>> | 96% | 53,142 psi | 87% | 3419 fps | 100% |
| Bofors RP15ᴾ | <<locked>> | 100% | 51,285 psi | 84% | 3317 fps | 97.1% |
| Bofors RP3 | <<locked>> | 84% | 55,056 psi | 90% | 3278 fps | 100% |
| Bofors RP5 | <<locked>> | 98% | 52,257 psi | 86% | 3337 fps | 97.5% |
| Bofors RP7 | <<locked>> | 88% | 54,447 psi | 89% | 3255 fps | 98.4% |
| Hodgdon H380 | <<locked>> | 82% | 51,808 psi | 85% | 3228 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 86% | 54,085 psi | 89% | 3323 fps | 98.8% |
| Hodgdon H4350 | <<locked>> | 90% | 54,418 psi | 89% | 3294 fps | 97.9% |
| Hodgdon Hybrid 100V | <<locked>> | 92% | 51,837 psi | 85% | 3232 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 82% | 53,316 psi | 88% | 3281 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 44,904 psi | 74% | 3268 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 88% | 52,997 psi | 87% | 3333 fps | 98.5% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,376 psi | 60% | 2106 fps | 100% |
| Hodgdon VARGET | <<locked>> | 82% | 52,910 psi | 87% | 3228 fps | 100% |
| IMR 4064 | <<locked>> | 84% | 52,315 psi | 86% | 3205 fps | 100% |
| IMR 4166 Enduron | <<locked>> | 86% | 54,505 psi | 89% | 3238 fps | 98.8% |
| IMR 4350 | <<locked>> | 90% | 52,199 psi | 86% | 3232 fps | 98.1% |
| IMR 4451 Enduron | <<locked>> | 86% | 52,721 psi | 87% | 3228 fps | 98.5% |
| IMR 4831 | <<locked>> | 94% | 52,315 psi | 86% | 3261 fps | 99.9% |
| IMR 4955 Enduron | <<locked>> | 96% | 54,911 psi | 90% | 3274 fps | 96% |
| IMR 7828 SSC | <<locked>> | 98% | 54,607 psi | 90% | 3383 fps | 96.5% |
| Lovex S062 | <<locked>> | 82% | 53,069 psi | 87% | 3212 fps | 100% |
| Lovex S065 | <<locked>> | 88% | 52,982 psi | 87% | 3228 fps | 99.4% |
| Lovex S070 | <<locked>> | 90% | 54,128 psi | 89% | 3268 fps | 98.9% |
| Lovex S071ᴾ | <<locked>> | 100% | 46,789 psi | 77% | 3140 fps | 98.4% |
| Norma 203B | <<locked>> | 82% | 53,534 psi | 88% | 3268 fps | 100% |
| Norma 204 | <<locked>> | 90% | 52,779 psi | 87% | 3281 fps | 97.1% |
| Norma MRP | <<locked>> | 96% | 51,851 psi | 85% | 3366 fps | 98.6% |
| Norma URP | <<locked>> | 90% | 52,939 psi | 87% | 3291 fps | 99.9% |
| Ramshot Big Game | <<locked>> | 82% | 54,505 psi | 89% | 3291 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,549 psi | 90% | 3389 fps | 96.9% |
| Ramshot Hunter | <<locked>> | 90% | 51,924 psi | 85% | 3287 fps | 99.1% |
| Ramshot Magnum | <<locked>> | 98% | 51,271 psi | 84% | 3291 fps | 98% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,086 psi | 61% | 2156 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 51,837 psi | 85% | 3212 fps | 98.9% |
| ReloadSwiss RS 60 | <<locked>> | 84% | 51,866 psi | 85% | 3330 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 90% | 54,273 psi | 89% | 3330 fps | 99.9% |
| ReloadSwiss RS 70 | <<locked>> | 90% | 52,736 psi | 87% | 3360 fps | 99.8% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 45,281 psi | 74% | 3268 fps | 97.5% |
| Rottweil R 902 | <<locked>> | 82% | 54,766 psi | 90% | 3225 fps | 100% |
| Rottweil R 903 | <<locked>> | 86% | 55,100 psi | 90% | 3271 fps | 100% |
| Rottweil R 904 | <<locked>> | 94% | 53,505 psi | 88% | 3261 fps | 96.3% |
| Rottweil R 905 | <<locked>> | 96% | 54,085 psi | 89% | 3327 fps | 97.8% |
| Rottweil R 907 | <<locked>> | 88% | 54,447 psi | 89% | 3255 fps | 98.4% |
| Shooters World Long Rifle | <<locked>> | 88% | 52,982 psi | 87% | 3228 fps | 99.4% |
| Shooters World Precision | <<locked>> | 82% | 53,069 psi | 87% | 3212 fps | 100% |
| Shooters World SW4350 | <<locked>> | 90% | 54,128 psi | 89% | 3268 fps | 98.9% |
| SNPE Vectan SP 11 | <<locked>> | 84% | 53,113 psi | 87% | 3278 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 84% | 52,620 psi | 86% | 3100 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 52,402 psi | 86% | 3166 fps | 98.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 96% | 53,621 psi | 88% | 3317 fps | 97.6% |
| Somchem S355 | <<locked>> | 86% | 55,027 psi | 90% | 3268 fps | 100% |
| Somchem S365 | <<locked>> | 92% | 52,431 psi | 86% | 3297 fps | 100% |
| Somchem S385 | <<locked>> | 96% | 54,665 psi | 90% | 3297 fps | 98.5% |
| Unknown powder | <<locked>> | 88% | 53,417 psi | 88% | 3297 fps | 99.7% |
| Vihtavuori N150 | <<locked>> | 86% | 52,837 psi | 87% | 3182 fps | 100% |
| Vihtavuori N160 | <<locked>> | 90% | 55,042 psi | 90% | 3291 fps | 99.9% |
| Vihtavuori N165ᴾ | <<locked>> | 100% | 54,201 psi | 89% | 3268 fps | 98.1% |
| Vihtavuori N540 | <<locked>> | 82% | 53,766 psi | 88% | 3189 fps | 100% |
| Vihtavuori N550 | <<locked>> | 90% | 54,186 psi | 89% | 3291 fps | 99.9% |
| Vihtavuori N555 | <<locked>> | 96% | 51,880 psi | 85% | 3304 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 90% | 54,955 psi | 90% | 3248 fps | 100% |
| Winchester 760 | <<locked>> | 86% | 54,085 psi | 89% | 3323 fps | 98.8% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 48,356 psi | 79% | 3396 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 52,881 psi | 87% | 3251 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% | 45,324 psi | 74% | 3025 fps | 96.4% |
| Accurate 3100 | <<locked>> | 88% | 37,115 psi | 61% | 2927 fps | 95.8% |
| Accurate 4064 | <<locked>> | 80% | 49,995 psi | 82% | 3146 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 38,377 psi | 63% | 2986 fps | 97.8% |
| ADI AR 2208 | <<locked>> | 80% | 47,065 psi | 77% | 3117 fps | 99.7% |
| ADI AR 2209 | <<locked>> | 90% | 45,382 psi | 75% | 3156 fps | 95.4% |
| ADI AR 2213 | <<locked>> | 96% | 49,588 psi | 81% | 3268 fps | 95% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 47,645 psi | 78% | 3143 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 80% | 50,923 psi | 84% | 3225 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 80% | 37,130 psi | 61% | 2995 fps | 97.8% |
| Alliant Reloder-17 | <<locked>> | 80% | 42,337 psi | 70% | 3136 fps | 99.8% |
| Alliant Reloder-19 | <<locked>> | 90% | 45,020 psi | 74% | 3146 fps | 95.4% |
| Alliant Reloder-22 | <<locked>> | 94% | 45,716 psi | 75% | 3202 fps | 95.8% |
| Alliant Reloder-23 | <<locked>> | 80% | 27,296 psi | 45% | 2703 fps | 95.1% |
| Alliant Reloder-25 | <<locked>> | 92% | 35,360 psi | 58% | 2969 fps | 95.7% |
| Alliant Reloder-26 | 79.9 gr | 84% | 33,895 psi | 56% | 2972 fps | 96% |
| Bofors RP15 | <<locked>> | 96% | 44,904 psi | 74% | 3186 fps | 95.4% |
| Bofors RP3 | <<locked>> | 80% | 48,080 psi | 79% | 3156 fps | 100% |
| Bofors RP5 | <<locked>> | 94% | 45,716 psi | 75% | 3202 fps | 95.8% |
| Bofors RP7 | <<locked>> | 80% | 42,279 psi | 69% | 3005 fps | 95.7% |
| Hodgdon H380 | <<locked>> | 80% | 48,472 psi | 80% | 3166 fps | 99.3% |
| Hodgdon H414 | <<locked>> | 80% | 43,714 psi | 72% | 3117 fps | 96.8% |
| Hodgdon H4350 | <<locked>> | 84% | 45,005 psi | 74% | 3104 fps | 95.7% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 34,766 psi | 57% | 2874 fps | 98.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 49,850 psi | 82% | 3219 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 98% | 42,177 psi | 69% | 3196 fps | 95% |
| Hodgdon Superformance | <<locked>> | 82% | 42,322 psi | 69% | 3114 fps | 96% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,093 psi | 44% | 1886 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 49,690 psi | 82% | 3169 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 46,093 psi | 76% | 3091 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 80% | 45,353 psi | 74% | 3054 fps | 97.1% |
| IMR 4350 | <<locked>> | 82% | 40,321 psi | 66% | 2979 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 80% | 43,569 psi | 72% | 3038 fps | 96.5% |
| IMR 4831 | <<locked>> | 80% | 33,388 psi | 55% | 2838 fps | 96.2% |
| IMR 4955 Enduron | <<locked>> | 94% | 51,445 psi | 84% | 3212 fps | 95.2% |
| IMR 7828 SSC | <<locked>> | 96% | 50,966 psi | 84% | 3310 fps | 95.6% |
| Lovex S062 | <<locked>> | 80% | 49,690 psi | 82% | 3153 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 41,089 psi | 67% | 2982 fps | 97.3% |
| Lovex S070 | <<locked>> | 80% | 39,407 psi | 65% | 2959 fps | 95.6% |
| Lovex S071 | <<locked>> | 92% | 35,984 psi | 59% | 2897 fps | 95.4% |
| Norma 203B | <<locked>> | 80% | 50,299 psi | 83% | 3209 fps | 100% |
| Norma 204 | <<locked>> | 86% | 46,093 psi | 76% | 3146 fps | 95.4% |
| Norma MRP | 81.2 gr | 88% | 39,030 psi | 64% | 3077 fps | 95.1% |
| Norma URP | <<locked>> | 80% | 38,043 psi | 62% | 2979 fps | 97.6% |
| Ramshot Big Game | <<locked>> | 80% | 50,850 psi | 83% | 3228 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 50,517 psi | 83% | 3310 fps | 95.9% |
| Ramshot Hunter | <<locked>> | 80% | 36,985 psi | 61% | 2959 fps | 95.5% |
| Ramshot Magnum | <<locked>> | 94% | 43,990 psi | 72% | 3140 fps | 96.1% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 27,659 psi | 45% | 1932 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 80% | 48,399 psi | 79% | 3143 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 44,976 psi | 74% | 3205 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 38,232 psi | 63% | 3002 fps | 97.5% |
| ReloadSwiss RS 70 | 75.4 gr | 80% | 37,043 psi | 61% | 3005 fps | 96.8% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 39,189 psi | 64% | 3104 fps | 95.1% |
| Rottweil R 902 | <<locked>> | 80% | 51,488 psi | 85% | 3166 fps | 100% |
| Rottweil R 903 | <<locked>> | 80% | 45,281 psi | 74% | 3097 fps | 99.9% |
| Rottweil R 904 | <<locked>> | 92% | 50,038 psi | 82% | 3192 fps | 95.4% |
| Rottweil R 905 | <<locked>> | 90% | 44,121 psi | 72% | 3127 fps | 95.3% |
| Rottweil R 907 | <<locked>> | 80% | 42,279 psi | 69% | 3005 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 80% | 41,089 psi | 67% | 2982 fps | 97.3% |
| Shooters World Precision | <<locked>> | 80% | 49,690 psi | 82% | 3153 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 39,407 psi | 65% | 2959 fps | 95.6% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 46,528 psi | 76% | 3153 fps | 99.8% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 46,340 psi | 76% | 2995 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 40,277 psi | 66% | 2917 fps | 95.8% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 43,714 psi | 72% | 3120 fps | 95.1% |
| Somchem S355 | <<locked>> | 80% | 45,484 psi | 75% | 3091 fps | 99.9% |
| Somchem S365 | <<locked>> | 80% | 34,534 psi | 57% | 2927 fps | 99.4% |
| Somchem S385 | <<locked>> | 88% | 41,989 psi | 69% | 3045 fps | 95.6% |
| Unknown powder | <<locked>> | 80% | 41,002 psi | 67% | 3045 fps | 97.8% |
| Vihtavuori N150 | <<locked>> | 80% | 43,482 psi | 71% | 3012 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 39,494 psi | 65% | 2979 fps | 98% |
| Vihtavuori N165 | <<locked>> | 92% | 41,379 psi | 68% | 3015 fps | 95% |
| Vihtavuori N540 | <<locked>> | 80% | 50,401 psi | 83% | 3133 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 38,943 psi | 64% | 2976 fps | 97.6% |
| Vihtavuori N555 | <<locked>> | 80% | 30,197 psi | 50% | 2795 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 38,769 psi | 64% | 2946 fps | 99.5% |
| Winchester 760 | <<locked>> | 80% | 43,714 psi | 72% | 3117 fps | 96.8% |
| Winchester StaBALL HD | <<locked>> | 84% | 27,644 psi | 45% | 2802 fps | 96.2% |
| Winchester Supreme 780 | <<locked>> | 90% | 45,556 psi | 75% | 3110 fps | 95.5% |
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 91 powders for .300 Lapua Mag. loaded with the .308 | 140gr | Lehigh Defense Controlled Chaos. Alliant Reloder-26 delivers the highest muzzle velocity at 3,419 fps; across all powders the maximum-charge window runs from 2,106 fps to 3,419 fps. ADI AR 2217 gives the best case fill at 100 %, and 91 of the 91 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 140.0 gr projectile in 0.308" calls for a 1:14.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2225, Alliant Reloder-23 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, ReloadSwiss RS 70, Alliant Reloder-26 rank at the top here: for .300 Lapua Mag. with the .308 | 140gr | Lehigh Defense Controlled Chaos they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2217, ADI AR 2225 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.