Load Specifications
Bullet Manufacturer:Berger
Bullet Weight:300 gr
Bullet Diameter:0.338"
Bullet Length:<<locked>>
Caliber:.338 Lapua Mag. load data
Case Length (l3):2.724"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:114 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:60,916 psi
Recommended Twist Rate:1:11.0
Load data in caliber .338 Lapua Mag. with .338 | 300gr | Berger Hybrid Target bullet and 135 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Hodgdon Retumbo, ReloadSwiss RS 76 and ReloadSwiss RS 80.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 90% | 53,388 psi | 88% | 2405 fps | 100% |
| Accurate 3100 | <<locked>> | 90% | 53,577 psi | 88% | 2408 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,389 psi | 89% | 2418 fps | 100% |
| Accurate 4350 | <<locked>> | 82% | 54,636 psi | 90% | 2421 fps | 100% |
| Accurate High Country | <<locked>> | 88% | 55,056 psi | 90% | 2546 fps | 99.9% |
| Accurate MAGPRO | <<locked>> | 88% | 51,909 psi | 85% | 2497 fps | 99.1% |
| Accurate MAGPRO | <<locked>> | 88% | 52,098 psi | 86% | 2500 fps | 99.2% |
| ADI AR 2209 | <<locked>> | 86% | 51,590 psi | 85% | 2431 fps | 99.9% |
| ADI AR 2209 | <<locked>> | 86% | 51,793 psi | 85% | 2438 fps | 99.9% |
| ADI AR 2213 | <<locked>> | 90% | 53,026 psi | 87% | 2493 fps | 99.8% |
| ADI AR 2213 | <<locked>> | 90% | 53,040 psi | 87% | 2493 fps | 99.8% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,534 psi | 90% | 2516 fps | 100% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 54,737 psi | 90% | 2520 fps | 100% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 47,065 psi | 77% | 2493 fps | 96.5% |
| ADI AR 2218ᴾ | <<locked>> | 100% | 47,195 psi | 77% | 2497 fps | 96.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 48,950 psi | 80% | 2490 fps | 100% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 49,066 psi | 81% | 2490 fps | 100% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 51,837 psi | 85% | 2431 fps | 99.9% |
| Alliant Power Pro Varmint | <<locked>> | 86% | 52,040 psi | 85% | 2434 fps | 99.9% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,141 psi | 86% | 2421 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 82% | 52,170 psi | 86% | 2425 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,781 psi | 90% | 2474 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 88% | 54,766 psi | 90% | 2474 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,388 psi | 88% | 2490 fps | 100% |
| Alliant Reloder-22 | <<locked>> | 90% | 53,403 psi | 88% | 2490 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,795 psi | 90% | 2454 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 92% | 54,984 psi | 90% | 2457 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,259 psi | 89% | 2516 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 96% | 54,418 psi | 89% | 2520 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 88% | 55,013 psi | 90% | 2536 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 86% | 51,285 psi | 84% | 2487 fps | 100% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 50,981 psi | 84% | 2546 fps | 97.7% |
| Alliant Reloder-33ᴾ | <<locked>> | 100% | 51,126 psi | 84% | 2546 fps | 97.8% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,099 psi | 89% | 2464 fps | 98.2% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 54,244 psi | 89% | 2467 fps | 98.2% |
| Bofors RP15 | <<locked>> | 92% | 52,634 psi | 86% | 2480 fps | 100% |
| Bofors RP15 | <<locked>> | 92% | 52,794 psi | 87% | 2484 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 53,940 psi | 89% | 2530 fps | 100% |
| Bofors RP30 | <<locked>> | 98% | 54,114 psi | 89% | 2533 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 53,388 psi | 88% | 2490 fps | 100% |
| Bofors RP5 | <<locked>> | 90% | 53,403 psi | 88% | 2490 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 52,504 psi | 86% | 2487 fps | 100% |
| Hodgdon H1000 | <<locked>> | 96% | 52,460 psi | 86% | 2487 fps | 100% |
| Hodgdon H4831 | <<locked>> | 88% | 52,692 psi | 87% | 2434 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 88% | 52,881 psi | 87% | 2441 fps | 99.4% |
| Hodgdon H4831 SC | <<locked>> | 88% | 51,735 psi | 85% | 2421 fps | 99.3% |
| Hodgdon H4831 SC | <<locked>> | 88% | 51,895 psi | 85% | 2425 fps | 99.3% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 52,301 psi | 86% | 2356 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 52,301 psi | 86% | 2356 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,142 psi | 87% | 2589 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 96% | 53,345 psi | 88% | 2595 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,492 psi | 62% | 1509 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,565 psi | 62% | 1509 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,534 psi | 90% | 2411 fps | 100% |
| IMR 4350 | <<locked>> | 84% | 54,520 psi | 90% | 2415 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,795 psi | 90% | 2411 fps | 100% |
| IMR 4831 | <<locked>> | 84% | 54,998 psi | 90% | 2415 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,766 psi | 88% | 2421 fps | 99.5% |
| IMR 4955 Enduron | <<locked>> | 88% | 53,751 psi | 88% | 2421 fps | 99.5% |
| IMR 7828 SSC | <<locked>> | 92% | 54,795 psi | 90% | 2526 fps | 99.9% |
| IMR 7828 SSC | <<locked>> | 92% | 54,998 psi | 90% | 2530 fps | 99.9% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,498 psi | 73% | 2415 fps | 99.1% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 44,672 psi | 73% | 2418 fps | 99.2% |
| Lovex S065 | <<locked>> | 82% | 54,969 psi | 90% | 2388 fps | 100% |
| Lovex S065 | <<locked>> | 82% | 54,969 psi | 90% | 2392 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 53,359 psi | 88% | 2392 fps | 100% |
| Lovex S070 | <<locked>> | 82% | 53,359 psi | 88% | 2392 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,810 psi | 90% | 2425 fps | 100% |
| Lovex S071 | <<locked>> | 96% | 54,984 psi | 90% | 2428 fps | 100% |
| Norma 204 | <<locked>> | 82% | 51,895 psi | 85% | 2418 fps | 99.9% |
| Norma 204 | <<locked>> | 82% | 51,895 psi | 85% | 2418 fps | 99.9% |
| Norma 217ᴾ | <<locked>> | 100% | 44,962 psi | 74% | 2438 fps | 100% |
| Norma 217ᴾ | <<locked>> | 100% | 45,150 psi | 74% | 2441 fps | 100% |
| Norma MRP | <<locked>> | 88% | 53,127 psi | 87% | 2507 fps | 100% |
| Norma MRP | <<locked>> | 88% | 53,345 psi | 88% | 2507 fps | 100% |
| Norma URP | <<locked>> | 82% | 52,982 psi | 87% | 2405 fps | 100% |
| Norma URP | <<locked>> | 82% | 53,026 psi | 87% | 2408 fps | 100% |
| Ramshot Grand | <<locked>> | 90% | 51,648 psi | 85% | 2493 fps | 99.8% |
| Ramshot Grand | <<locked>> | 90% | 51,808 psi | 85% | 2497 fps | 99.9% |
| Ramshot Hunter | <<locked>> | 82% | 51,779 psi | 85% | 2415 fps | 100% |
| Ramshot Hunter | <<locked>> | 82% | 51,764 psi | 85% | 2415 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,708 psi | 88% | 2484 fps | 100% |
| Ramshot Magnum | <<locked>> | 94% | 53,911 psi | 89% | 2487 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,464 psi | 63% | 1545 fps | 100% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,377 psi | 63% | 1545 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,534 psi | 90% | 2444 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 82% | 54,505 psi | 89% | 2444 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 52,707 psi | 87% | 2467 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 82% | 52,910 psi | 87% | 2470 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,330 psi | 88% | 2582 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 96% | 53,519 psi | 88% | 2585 fps | 100% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 52,388 psi | 86% | 2552 fps | 99.4% |
| ReloadSwiss RS 80 | <<locked>> | 98% | 52,562 psi | 86% | 2556 fps | 99.4% |
| Rottweil R 904 | <<locked>> | 86% | 52,707 psi | 87% | 2408 fps | 99.7% |
| Rottweil R 904 | <<locked>> | 86% | 52,736 psi | 87% | 2408 fps | 99.7% |
| Rottweil R 905 | <<locked>> | 88% | 54,375 psi | 89% | 2464 fps | 100% |
| Rottweil R 905 | <<locked>> | 88% | 54,389 psi | 89% | 2464 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,969 psi | 90% | 2388 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 82% | 54,969 psi | 90% | 2392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,359 psi | 88% | 2392 fps | 100% |
| Shooters World SW4350 | <<locked>> | 82% | 53,359 psi | 88% | 2392 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 53,867 psi | 88% | 2352 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 82% | 53,882 psi | 88% | 2352 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,969 psi | 89% | 2461 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 88% | 53,983 psi | 89% | 2461 fps | 100% |
| Somchem S361 | <<locked>> | 86% | 53,751 psi | 88% | 2402 fps | 99.4% |
| Somchem S361 | <<locked>> | 86% | 53,882 psi | 88% | 2405 fps | 99.4% |
| Somchem S365 | <<locked>> | 84% | 53,708 psi | 88% | 2408 fps | 100% |
| Somchem S365 | <<locked>> | 84% | 53,722 psi | 88% | 2408 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,737 psi | 90% | 2438 fps | 100% |
| Somchem S385 | <<locked>> | 88% | 54,911 psi | 90% | 2441 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,360 psi | 89% | 2395 fps | 100% |
| Vihtavuori N160 | <<locked>> | 82% | 54,592 psi | 90% | 2398 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,433 psi | 89% | 2428 fps | 100% |
| Vihtavuori N165 | <<locked>> | 92% | 54,433 psi | 89% | 2428 fps | 100% |
| Vihtavuori N170 | <<locked>> | 96% | 52,895 psi | 87% | 2441 fps | 96.3% |
| Vihtavuori N170 | <<locked>> | 96% | 53,040 psi | 87% | 2444 fps | 96.4% |
| Vihtavuori N550 | <<locked>> | 82% | 53,650 psi | 88% | 2405 fps | 100% |
| Vihtavuori N550 | <<locked>> | 82% | 53,664 psi | 88% | 2405 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 53,606 psi | 88% | 2434 fps | 100% |
| Vihtavuori N555 | <<locked>> | 88% | 53,635 psi | 88% | 2434 fps | 100% |
| Vihtavuori N560 | <<locked>> | 88% | 52,866 psi | 87% | 2507 fps | 99.6% |
| Vihtavuori N560 | <<locked>> | 88% | 53,026 psi | 87% | 2510 fps | 99.6% |
| Vihtavuori N565 | <<locked>> | 94% | 52,968 psi | 87% | 2497 fps | 99.7% |
| Vihtavuori N565 | <<locked>> | 94% | 53,171 psi | 87% | 2500 fps | 99.7% |
| Vihtavuori N568 | <<locked>> | 98% | 53,592 psi | 88% | 2556 fps | 99.2% |
| Vihtavuori N568 | <<locked>> | 98% | 53,766 psi | 88% | 2556 fps | 99.2% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,259 psi | 89% | 2605 fps | 98% |
| Vihtavuori N570ᴾ | <<locked>> | 100% | 54,447 psi | 89% | 2608 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,635 psi | 88% | 2359 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 82% | 53,592 psi | 88% | 2359 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,258 psi | 87% | 2533 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 92% | 53,258 psi | 87% | 2533 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,375 psi | 89% | 2438 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 90% | 54,563 psi | 90% | 2441 fps | 100% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 38,406 psi | 63% | 2182 fps | 99.8% |
| Accurate 3100 | <<locked>> | 80% | 38,450 psi | 63% | 2182 fps | 99.8% |
| Accurate 4350 | <<locked>> | 80% | 50,981 psi | 84% | 2375 fps | 100% |
| Accurate 4350 | <<locked>> | 80% | 50,995 psi | 84% | 2375 fps | 100% |
| Accurate High Country | <<locked>> | 80% | 41,858 psi | 69% | 2339 fps | 98.4% |
| Accurate MAGPRO | <<locked>> | 80% | 39,320 psi | 65% | 2283 fps | 96.5% |
| Accurate MAGPRO | <<locked>> | 80% | 39,349 psi | 65% | 2287 fps | 96.6% |
| ADI AR 2209 | <<locked>> | 80% | 42,351 psi | 70% | 2287 fps | 99.1% |
| ADI AR 2209 | <<locked>> | 80% | 42,525 psi | 70% | 2290 fps | 99.1% |
| ADI AR 2213 | <<locked>> | 80% | 37,753 psi | 62% | 2238 fps | 97.2% |
| ADI AR 2213 | <<locked>> | 80% | 37,942 psi | 62% | 2241 fps | 97.2% |
| ADI AR 2217 | <<locked>> | 84% | 32,198 psi | 53% | 2119 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 84% | 32,213 psi | 53% | 2119 fps | 95.3% |
| ADI AR 2218 | <<locked>> | 98% | 43,961 psi | 72% | 2434 fps | 95.4% |
| ADI AR 2218 | <<locked>> | 98% | 44,092 psi | 72% | 2438 fps | 95.5% |
| ADI AR 2225 | <<locked>> | 80% | 25,744 psi | 42% | 1995 fps | 95.2% |
| ADI AR 2225 | <<locked>> | 80% | 25,773 psi | 42% | 1995 fps | 95.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,786 psi | 70% | 2290 fps | 99.2% |
| Alliant Power Pro Varmint | <<locked>> | 80% | 42,801 psi | 70% | 2290 fps | 99.2% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,878 psi | 80% | 2379 fps | 100% |
| Alliant Reloder-16 | <<locked>> | 80% | 48,878 psi | 80% | 2379 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,380 psi | 70% | 2283 fps | 99.1% |
| Alliant Reloder-19 | <<locked>> | 80% | 42,409 psi | 70% | 2287 fps | 99.1% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,189 psi | 63% | 2244 fps | 98.5% |
| Alliant Reloder-22 | <<locked>> | 80% | 38,377 psi | 63% | 2247 fps | 98.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,086 psi | 61% | 2198 fps | 100% |
| Alliant Reloder-23 | <<locked>> | 80% | 37,144 psi | 61% | 2201 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,010 psi | 53% | 2146 fps | 99.4% |
| Alliant Reloder-25 | <<locked>> | 80% | 32,155 psi | 53% | 2149 fps | 99.5% |
| Alliant Reloder-26 | <<locked>> | 80% | 40,973 psi | 67% | 2336 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 80% | 41,133 psi | 68% | 2339 fps | 100% |
| Alliant Reloder-33 | <<locked>> | 94% | 41,133 psi | 68% | 2375 fps | 95% |
| Alliant Reloder-33 | <<locked>> | 94% | 41,133 psi | 68% | 2375 fps | 95% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 42,409 psi | 70% | 2270 fps | 95.4% |
| Baschieri & Pellagri 109 | <<locked>> | 84% | 42,424 psi | 70% | 2270 fps | 95.4% |
| Bofors RP15 | <<locked>> | 80% | 35,636 psi | 59% | 2192 fps | 97.7% |
| Bofors RP15 | <<locked>> | 80% | 35,781 psi | 59% | 2195 fps | 97.7% |
| Bofors RP30 | <<locked>> | 82% | 31,488 psi | 52% | 2133 fps | 95.6% |
| Bofors RP30 | <<locked>> | 82% | 31,618 psi | 52% | 2136 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 38,189 psi | 63% | 2244 fps | 98.5% |
| Bofors RP5 | <<locked>> | 80% | 38,377 psi | 63% | 2247 fps | 98.5% |
| Hodgdon H1000 | <<locked>> | 80% | 30,618 psi | 50% | 2083 fps | 95.2% |
| Hodgdon H1000 | <<locked>> | 80% | 30,647 psi | 50% | 2083 fps | 95.3% |
| Hodgdon H4831 | <<locked>> | 80% | 40,321 psi | 66% | 2238 fps | 97.2% |
| Hodgdon H4831 | <<locked>> | 80% | 40,509 psi | 67% | 2241 fps | 97.3% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,581 psi | 65% | 2224 fps | 97% |
| Hodgdon H4831 SC | <<locked>> | 80% | 39,726 psi | 65% | 2228 fps | 97.1% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 45,977 psi | 75% | 2274 fps | 100% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 46,166 psi | 76% | 2277 fps | 100% |
| Hodgdon Retumbo | 70.3 gr | 80% | 31,299 psi | 51% | 2172 fps | 97% |
| Hodgdon Retumbo | 70.3 gr | 80% | 31,328 psi | 51% | 2172 fps | 97.1% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,108 psi | 46% | 1345 fps | 100% |
| Hodgdon TrailBoss | <<locked>> | 80% | 28,195 psi | 46% | 1348 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,124 psi | 79% | 2323 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 48,269 psi | 79% | 2326 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,182 psi | 79% | 2326 fps | 100% |
| IMR 4831 | <<locked>> | 80% | 48,370 psi | 79% | 2329 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,843 psi | 69% | 2234 fps | 97.7% |
| IMR 4955 Enduron | <<locked>> | 80% | 41,989 psi | 69% | 2238 fps | 97.8% |
| IMR 7828 SSC | <<locked>> | 80% | 36,550 psi | 60% | 2221 fps | 96.9% |
| IMR 7828 SSC | <<locked>> | 80% | 36,593 psi | 60% | 2224 fps | 96.9% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,111 psi | 53% | 2169 fps | 95.6% |
| IMR 8133 Enduron | <<locked>> | 90% | 32,227 psi | 53% | 2172 fps | 95.6% |
| Lovex S065 | <<locked>> | 80% | 51,735 psi | 85% | 2346 fps | 100% |
| Lovex S065 | <<locked>> | 80% | 51,750 psi | 85% | 2349 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,024 psi | 82% | 2346 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 50,241 psi | 82% | 2349 fps | 100% |
| Lovex S071 | <<locked>> | 80% | 33,199 psi | 55% | 2080 fps | 99% |
| Lovex S071 | <<locked>> | 80% | 33,228 psi | 55% | 2083 fps | 99% |
| Norma 204 | <<locked>> | 80% | 48,544 psi | 80% | 2369 fps | 99.7% |
| Norma 204 | <<locked>> | 80% | 48,530 psi | 80% | 2369 fps | 99.7% |
| Norma 217 | <<locked>> | 84% | 26,484 psi | 43% | 2044 fps | 95.2% |
| Norma 217 | <<locked>> | 84% | 26,513 psi | 44% | 2044 fps | 95.2% |
| Norma MRP | <<locked>> | 80% | 40,219 psi | 66% | 2303 fps | 99.6% |
| Norma MRP | <<locked>> | 80% | 40,379 psi | 66% | 2306 fps | 99.7% |
| Norma URP | <<locked>> | 80% | 49,574 psi | 81% | 2359 fps | 100% |
| Norma URP | <<locked>> | 80% | 49,763 psi | 82% | 2362 fps | 100% |
| Ramshot Grand | <<locked>> | 80% | 36,158 psi | 59% | 2228 fps | 97.2% |
| Ramshot Grand | <<locked>> | 80% | 36,318 psi | 60% | 2231 fps | 97.2% |
| Ramshot Hunter | <<locked>> | 80% | 48,501 psi | 80% | 2369 fps | 100% |
| Ramshot Hunter | <<locked>> | 80% | 48,486 psi | 80% | 2369 fps | 100% |
| Ramshot Magnum | <<locked>> | 80% | 32,329 psi | 53% | 2129 fps | 97.6% |
| Ramshot Magnum | <<locked>> | 80% | 32,343 psi | 53% | 2129 fps | 97.6% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,892 psi | 47% | 1381 fps | 100% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,819 psi | 47% | 1378 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 50,836 psi | 83% | 2395 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 51,024 psi | 84% | 2398 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,023 psi | 80% | 2418 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 49,226 psi | 81% | 2421 fps | 100% |
| ReloadSwiss RS 76 | 75.3 gr | 80% | 30,182 psi | 50% | 2149 fps | 97.7% |
| ReloadSwiss RS 76 | 75.3 gr | 80% | 30,313 psi | 50% | 2152 fps | 97.8% |
| ReloadSwiss RS 80 | 83.5 gr | 88% | 36,260 psi | 60% | 2274 fps | 95.8% |
| ReloadSwiss RS 80 | 83.5 gr | 88% | 36,390 psi | 60% | 2277 fps | 95.8% |
| Rottweil R 904 | <<locked>> | 80% | 43,540 psi | 71% | 2267 fps | 98.5% |
| Rottweil R 904 | <<locked>> | 80% | 43,540 psi | 71% | 2267 fps | 98.5% |
| Rottweil R 905 | <<locked>> | 80% | 41,930 psi | 69% | 2274 fps | 99.2% |
| Rottweil R 905 | <<locked>> | 80% | 41,930 psi | 69% | 2277 fps | 99.2% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,735 psi | 85% | 2346 fps | 100% |
| Shooters World Long Rifle | <<locked>> | 80% | 51,750 psi | 85% | 2349 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,024 psi | 82% | 2346 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 50,241 psi | 82% | 2349 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,473 psi | 83% | 2306 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 50,633 psi | 83% | 2310 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,597 psi | 68% | 2270 fps | 99.1% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 41,597 psi | 68% | 2274 fps | 99.1% |
| Somchem S361 | <<locked>> | 80% | 44,135 psi | 72% | 2257 fps | 98% |
| Somchem S361 | <<locked>> | 80% | 44,280 psi | 73% | 2260 fps | 98.1% |
| Somchem S365 | <<locked>> | 80% | 47,021 psi | 77% | 2323 fps | 100% |
| Somchem S365 | <<locked>> | 80% | 47,195 psi | 77% | 2326 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 42,250 psi | 69% | 2254 fps | 99.6% |
| Somchem S385 | <<locked>> | 80% | 42,424 psi | 70% | 2257 fps | 99.6% |
| Vihtavuori N160 | <<locked>> | 80% | 51,068 psi | 84% | 2352 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 51,082 psi | 84% | 2352 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 36,825 psi | 60% | 2152 fps | 98.5% |
| Vihtavuori N165 | <<locked>> | 80% | 36,869 psi | 61% | 2156 fps | 98.5% |
| Vihtavuori N170 | <<locked>> | 94% | 49,530 psi | 81% | 2392 fps | 95.6% |
| Vihtavuori N170 | <<locked>> | 94% | 49,501 psi | 81% | 2392 fps | 95.6% |
| Vihtavuori N550 | <<locked>> | 80% | 50,285 psi | 83% | 2359 fps | 100% |
| Vihtavuori N550 | <<locked>> | 80% | 50,473 psi | 83% | 2362 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,379 psi | 68% | 2260 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 41,597 psi | 68% | 2264 fps | 100% |
| Vihtavuori N560 | <<locked>> | 80% | 40,161 psi | 66% | 2297 fps | 97.4% |
| Vihtavuori N560 | <<locked>> | 80% | 40,350 psi | 66% | 2300 fps | 97.5% |
| Vihtavuori N565 | <<locked>> | 80% | 33,214 psi | 55% | 2149 fps | 95.3% |
| Vihtavuori N565 | <<locked>> | 80% | 33,243 psi | 55% | 2149 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 88% | 37,710 psi | 62% | 2287 fps | 95.6% |
| Vihtavuori N568 | <<locked>> | 88% | 37,869 psi | 62% | 2290 fps | 95.7% |
| Vihtavuori N570 | <<locked>> | 94% | 44,077 psi | 72% | 2441 fps | 95.6% |
| Vihtavuori N570 | <<locked>> | 94% | 44,077 psi | 72% | 2438 fps | 95.6% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,067 psi | 82% | 2316 fps | 100% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 50,256 psi | 83% | 2316 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,837 psi | 56% | 2244 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 80% | 33,881 psi | 56% | 2244 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,769 psi | 64% | 2195 fps | 98.5% |
| Winchester Supreme 780 | <<locked>> | 80% | 38,798 psi | 64% | 2198 fps | 98.5% |
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 135 powders for .338 Lapua Mag. loaded with the .338 | 300gr | Berger Hybrid Target. Vihtavuori N570 delivers the highest muzzle velocity at 2,608 fps; across all powders the maximum-charge window runs from 1,509 fps to 2,608 fps. ADI AR 2217 gives the best case fill at 100 %, and 135 of the 135 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 62–90 %, leaving at least 10 % headroom. The 300.0 gr projectile in 0.338" calls for a 1:11.0 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2217, ADI AR 2218 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. Hodgdon Retumbo, ReloadSwiss RS 76, ReloadSwiss RS 80 rank at the top here: for .338 Lapua Mag. with the .338 | 300gr | Berger Hybrid Target 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.