Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 265gr | CutEdge MTH bullet and 73 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Winchester StaBALL HD, Vihtavuori N560 and Norma MRP.
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: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 52,620 psi | 86% | 2549 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,317 psi | 89% | 2579 fps | 100% |
| Accurate MAGPRO | <<locked>> | 94% | 55,013 psi | 90% | 2694 fps | 98.6% |
| ADI AR 2209 | <<locked>> | 90% | 51,735 psi | 85% | 2585 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 52,968 psi | 87% | 2641 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,311 psi | 78% | 2549 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 41,901 psi | 69% | 2513 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 51,967 psi | 85% | 2582 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 52,794 psi | 87% | 2592 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 92% | 54,868 psi | 90% | 2628 fps | 99.7% |
| Alliant Reloder-22 | <<locked>> | 94% | 52,779 psi | 87% | 2638 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 53,824 psi | 88% | 2605 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,011 psi | 87% | 2664 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,085 psi | 89% | 2690 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 96% | 55,085 psi | 90% | 2608 fps | 96.9% |
| Bofors RP15 | <<locked>> | 96% | 51,808 psi | 85% | 2621 fps | 99.5% |
| Bofors RP30ᴾ | <<locked>> | 100% | 48,994 psi | 80% | 2612 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 52,779 psi | 87% | 2638 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 53,606 psi | 88% | 2533 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,257 psi | 86% | 2628 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 52,576 psi | 86% | 2582 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,040 psi | 85% | 2543 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 53,055 psi | 87% | 2585 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 51,837 psi | 85% | 2569 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,170 psi | 86% | 2513 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,069 psi | 85% | 2730 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 52,779 psi | 87% | 2615 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,927 psi | 61% | 1594 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 51,837 psi | 85% | 2523 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 51,924 psi | 85% | 2510 fps | 99.9% |
| IMR 4831 | <<locked>> | 88% | 54,766 psi | 90% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,172 psi | 89% | 2569 fps | 98.7% |
| IMR 7828 SSC | <<locked>> | 96% | 54,404 psi | 89% | 2674 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 52,315 psi | 86% | 2507 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 53,737 psi | 88% | 2549 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 53,693 psi | 88% | 2566 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,344 psi | 86% | 2569 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 37,318 psi | 61% | 2444 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 52,388 psi | 86% | 2654 fps | 100% |
| Norma URP | <<locked>> | 86% | 53,113 psi | 87% | 2566 fps | 100% |
| Ramshot Grand | <<locked>> | 96% | 54,998 psi | 90% | 2694 fps | 99.5% |
| Ramshot Hunter | <<locked>> | 86% | 51,866 psi | 85% | 2572 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,113 psi | 87% | 2631 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,768 psi | 62% | 1634 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,273 psi | 89% | 2602 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 52,605 psi | 86% | 2628 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 52,431 psi | 86% | 2726 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,253 psi | 78% | 2621 fps | 97.4% |
| Rottweil R 903 | <<locked>> | 82% | 54,592 psi | 90% | 2526 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,026 psi | 87% | 2556 fps | 98.9% |
| Rottweil R 905 | <<locked>> | 92% | 54,273 psi | 89% | 2615 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 53,606 psi | 88% | 2533 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,315 psi | 86% | 2507 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 53,737 psi | 88% | 2549 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 82% | 54,824 psi | 90% | 2411 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 86% | 54,752 psi | 90% | 2510 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 53,838 psi | 88% | 2612 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 54,534 psi | 90% | 2523 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,375 psi | 89% | 2552 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 53,185 psi | 87% | 2566 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 54,520 psi | 90% | 2589 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 52,141 psi | 86% | 2454 fps | 100% |
| Vihtavuori N160 | <<locked>> | 86% | 54,882 psi | 90% | 2559 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,085 psi | 89% | 2572 fps | 99.8% |
| Vihtavuori N550 | <<locked>> | 86% | 53,911 psi | 89% | 2562 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,518 psi | 86% | 2582 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 52,373 psi | 86% | 2651 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 51,924 psi | 85% | 2631 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 48,472 psi | 80% | 2625 fps | 97.1% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,172 psi | 89% | 2520 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 52,779 psi | 87% | 2585 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 98% | 54,911 psi | 90% | 2730 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 54,636 psi | 90% | 2589 fps | 99.7% |
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% | 32,590 psi | 54% | 2205 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 44,150 psi | 72% | 2431 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 41,466 psi | 68% | 2467 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 37,014 psi | 61% | 2323 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 37,652 psi | 62% | 2362 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 94% | 38,580 psi | 63% | 2385 fps | 95.9% |
| ADI AR 2225 | <<locked>> | 90% | 30,226 psi | 50% | 2238 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,685 psi | 70% | 2441 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,197 psi | 81% | 2543 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 36,999 psi | 61% | 2320 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 32,663 psi | 54% | 2260 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,502 psi | 52% | 2234 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,354 psi | 45% | 2149 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,200 psi | 56% | 2356 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 48,573 psi | 80% | 2503 fps | 95.3% |
| Bofors RP15 | <<locked>> | 84% | 34,766 psi | 57% | 2310 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 34,650 psi | 57% | 2339 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 32,663 psi | 54% | 2260 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 47,224 psi | 78% | 2434 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 90% | 36,970 psi | 61% | 2352 fps | 96% |
| Hodgdon H414 | <<locked>> | 80% | 46,064 psi | 76% | 2480 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 48,689 psi | 80% | 2490 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 40,277 psi | 66% | 2372 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 39,479 psi | 65% | 2356 fps | 95.3% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,059 psi | 66% | 2333 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 32,605 psi | 54% | 2329 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 45,397 psi | 75% | 2503 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,688 psi | 45% | 1424 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 42,757 psi | 70% | 2379 fps | 98.9% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,617 psi | 80% | 2457 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 42,090 psi | 69% | 2385 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,465 psi | 65% | 2320 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 38,696 psi | 64% | 2398 fps | 95.8% |
| Lovex S065 | <<locked>> | 80% | 46,151 psi | 76% | 2415 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,309 psi | 73% | 2405 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 27,949 psi | 46% | 2093 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 42,554 psi | 70% | 2411 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 30,560 psi | 50% | 2280 fps | 95.4% |
| Norma MRP | 72.4 gr | 80% | 34,127 psi | 56% | 2323 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 43,511 psi | 71% | 2421 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 35,636 psi | 59% | 2346 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 42,322 psi | 69% | 2418 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 31,546 psi | 52% | 2238 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,195 psi | 46% | 1457 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,121 psi | 72% | 2451 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,467 psi | 70% | 2470 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 29,399 psi | 48% | 2241 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 40,553 psi | 67% | 2497 fps | 95.4% |
| Rottweil R 903 | <<locked>> | 80% | 51,184 psi | 84% | 2484 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,421 psi | 63% | 2306 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 36,129 psi | 59% | 2303 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 47,224 psi | 78% | 2434 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,151 psi | 76% | 2415 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,309 psi | 73% | 2405 fps | 99.5% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 51,634 psi | 85% | 2372 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,005 psi | 74% | 2365 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 35,810 psi | 59% | 2297 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 51,198 psi | 84% | 2480 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 38,914 psi | 64% | 2297 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 40,408 psi | 66% | 2382 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 36,651 psi | 60% | 2287 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 48,921 psi | 80% | 2411 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,034 psi | 74% | 2418 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 31,734 psi | 52% | 2175 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 44,295 psi | 73% | 2421 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,215 psi | 58% | 2297 fps | 99.7% |
| Vihtavuori N560 | 76 gr | 84% | 39,639 psi | 65% | 2425 fps | 95.6% |
| Vihtavuori N565 | <<locked>> | 90% | 39,465 psi | 65% | 2415 fps | 95.9% |
| Vihtavuori N568 | <<locked>> | 96% | 42,090 psi | 69% | 2510 fps | 95.3% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 43,947 psi | 72% | 2382 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,238 psi | 76% | 2480 fps | 99.6% |
| Winchester StaBALL HD | 71.6 gr | 80% | 27,702 psi | 45% | 2244 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 33,373 psi | 55% | 2218 fps | 95.3% |
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 78 powders for .338 Lapua Mag. loaded with the .338 | 265gr | CutEdge MTH. Hodgdon Retumbo delivers the highest muzzle velocity at 2,730 fps; across all powders the maximum-charge window runs from 1,594 fps to 2,730 fps. ADI AR 2217 gives the best case fill at 100 %, and 78 of the 78 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (420 MPa), the top charges use 61–90 %, leaving at least 10 % headroom. The 265.0 gr projectile in 0.338" calls for a 1:10.0 twist; slower twists will usually not stabilise this weight. 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. Winchester StaBALL HD, Vihtavuori N560, Norma MRP rank at the top here: for .338 Lapua Mag. with the .338 | 265gr | CutEdge MTH they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Alliant Reloder-33, IMR 7977 Enduron, Vihtavuori N170 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.