Load Specifications
Load data in caliber .338 Lapua Mag. with .338 | 260gr | CutEdge Maximus bullet and 72 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% | 53,171 psi | 87% | 2585 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 54,694 psi | 90% | 2615 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 51,938 psi | 85% | 2674 fps | 98% |
| ADI AR 2209 | <<locked>> | 90% | 52,141 psi | 86% | 2621 fps | 99.5% |
| ADI AR 2213 | <<locked>> | 94% | 53,432 psi | 88% | 2677 fps | 99% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 47,761 psi | 78% | 2585 fps | 98.4% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 42,279 psi | 69% | 2546 fps | 99.6% |
| Alliant Reloder-16 | <<locked>> | 86% | 52,417 psi | 86% | 2618 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 53,185 psi | 87% | 2628 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 51,909 psi | 85% | 2612 fps | 99.5% |
| Alliant Reloder-22 | <<locked>> | 94% | 53,287 psi | 87% | 2671 fps | 99.7% |
| Alliant Reloder-23 | <<locked>> | 96% | 54,389 psi | 89% | 2641 fps | 100% |
| Alliant Reloder-25ᴾ | <<locked>> | 100% | 53,766 psi | 88% | 2703 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 92% | 54,737 psi | 90% | 2726 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 52,170 psi | 86% | 2592 fps | 96.2% |
| Bofors RP15 | <<locked>> | 96% | 52,504 psi | 86% | 2661 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 49,487 psi | 81% | 2648 fps | 98.9% |
| Bofors RP5 | <<locked>> | 94% | 53,287 psi | 87% | 2671 fps | 99.7% |
| Bofors RP7 | <<locked>> | 84% | 54,012 psi | 89% | 2569 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 52,692 psi | 87% | 2664 fps | 99.5% |
| Hodgdon H414 | <<locked>> | 84% | 53,098 psi | 87% | 2618 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 52,460 psi | 86% | 2579 fps | 99.6% |
| Hodgdon H4831 | <<locked>> | 92% | 53,519 psi | 88% | 2621 fps | 98.5% |
| Hodgdon H4831 SC | <<locked>> | 92% | 52,315 psi | 86% | 2602 fps | 98.3% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 52,547 psi | 86% | 2546 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 52,576 psi | 86% | 2766 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 53,113 psi | 87% | 2651 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 36,985 psi | 61% | 1617 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 52,156 psi | 86% | 2556 fps | 99.8% |
| IMR 4451 Enduron | <<locked>> | 82% | 52,185 psi | 86% | 2543 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 51,706 psi | 85% | 2559 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 92% | 54,679 psi | 90% | 2608 fps | 98.8% |
| IMR 7828 SSC | <<locked>> | 96% | 55,071 psi | 90% | 2713 fps | 99.3% |
| Lovex S065 | <<locked>> | 84% | 52,518 psi | 86% | 2539 fps | 100% |
| Lovex S070 | <<locked>> | 86% | 54,099 psi | 89% | 2585 fps | 100% |
| Lovex S071ᴾ | <<locked>> | 100% | 54,172 psi | 89% | 2598 fps | 100% |
| Norma 204 | <<locked>> | 86% | 52,765 psi | 87% | 2605 fps | 99.4% |
| Norma 217ᴾ | <<locked>> | 100% | 37,782 psi | 62% | 2477 fps | 98.2% |
| Norma MRP | <<locked>> | 92% | 53,040 psi | 87% | 2690 fps | 100% |
| Norma URP | <<locked>> | 86% | 53,490 psi | 88% | 2598 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 51,677 psi | 85% | 2674 fps | 99.1% |
| Ramshot Hunter | <<locked>> | 86% | 52,301 psi | 86% | 2608 fps | 100% |
| Ramshot Magnum | <<locked>> | 98% | 53,766 psi | 88% | 2667 fps | 99.9% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 37,797 psi | 62% | 1657 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 54,911 psi | 90% | 2638 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 53,229 psi | 87% | 2664 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 53,069 psi | 87% | 2766 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 47,877 psi | 79% | 2657 fps | 97.5% |
| Rottweil R 903 | <<locked>> | 82% | 55,114 psi | 90% | 2566 fps | 100% |
| Rottweil R 904 | <<locked>> | 90% | 53,447 psi | 88% | 2592 fps | 99% |
| Rottweil R 905 | <<locked>> | 92% | 54,665 psi | 90% | 2651 fps | 99.8% |
| Rottweil R 907 | <<locked>> | 84% | 54,012 psi | 89% | 2569 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 52,518 psi | 86% | 2539 fps | 100% |
| Shooters World SW4350 | <<locked>> | 86% | 54,099 psi | 89% | 2585 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 51,706 psi | 85% | 2497 fps | 99.9% |
| SNPE Vectan Tubal 8000 | <<locked>> | 92% | 54,230 psi | 89% | 2648 fps | 99.7% |
| Somchem S355 | <<locked>> | 82% | 54,868 psi | 90% | 2559 fps | 100% |
| Somchem S361 | <<locked>> | 90% | 54,940 psi | 90% | 2589 fps | 98.6% |
| Somchem S365 | <<locked>> | 88% | 53,751 psi | 88% | 2602 fps | 100% |
| Somchem S385 | <<locked>> | 92% | 55,042 psi | 90% | 2625 fps | 100% |
| Vihtavuori N150 | <<locked>> | 82% | 52,634 psi | 86% | 2490 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 51,692 psi | 85% | 2543 fps | 100% |
| Vihtavuori N165 | <<locked>> | 96% | 54,708 psi | 90% | 2608 fps | 99.9% |
| Vihtavuori N550 | <<locked>> | 86% | 54,389 psi | 89% | 2598 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 52,997 psi | 87% | 2618 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 53,026 psi | 87% | 2687 fps | 98.7% |
| Vihtavuori N565 | <<locked>> | 98% | 52,431 psi | 86% | 2667 fps | 98.8% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 49,211 psi | 81% | 2664 fps | 97.2% |
| Winchester 6.5 StaBALL | <<locked>> | 86% | 54,694 psi | 90% | 2556 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 53,301 psi | 88% | 2621 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 51,706 psi | 85% | 2720 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 94% | 55,056 psi | 90% | 2621 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% | 32,866 psi | 54% | 2234 fps | 97.7% |
| Accurate 4350 | <<locked>> | 80% | 44,512 psi | 73% | 2464 fps | 100% |
| Accurate MAGPRO | <<locked>> | 86% | 41,800 psi | 69% | 2500 fps | 95.5% |
| ADI AR 2209 | <<locked>> | 80% | 37,275 psi | 61% | 2356 fps | 96.5% |
| ADI AR 2213 | <<locked>> | 84% | 38,072 psi | 63% | 2398 fps | 95.3% |
| ADI AR 2217 | <<locked>> | 92% | 36,521 psi | 60% | 2362 fps | 95% |
| ADI AR 2225 | <<locked>> | 90% | 30,501 psi | 50% | 2270 fps | 95.7% |
| Alliant Reloder-16 | <<locked>> | 80% | 42,859 psi | 70% | 2470 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 49,632 psi | 81% | 2579 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 37,289 psi | 61% | 2349 fps | 96.6% |
| Alliant Reloder-22 | <<locked>> | 80% | 33,040 psi | 54% | 2293 fps | 95.1% |
| Alliant Reloder-23 | <<locked>> | 80% | 31,792 psi | 52% | 2264 fps | 99.8% |
| Alliant Reloder-25 | <<locked>> | 80% | 27,601 psi | 45% | 2178 fps | 96.2% |
| Alliant Reloder-26 | <<locked>> | 80% | 34,534 psi | 57% | 2388 fps | 99.3% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 48,979 psi | 80% | 2539 fps | 95.4% |
| Bofors RP15 | <<locked>> | 84% | 35,114 psi | 58% | 2343 fps | 95.8% |
| Bofors RP30 | <<locked>> | 90% | 35,128 psi | 58% | 2375 fps | 95.1% |
| Bofors RP5 | <<locked>> | 80% | 33,040 psi | 54% | 2293 fps | 95.1% |
| Bofors RP7 | <<locked>> | 80% | 47,558 psi | 78% | 2470 fps | 99.4% |
| Hodgdon H1000 | <<locked>> | 88% | 34,896 psi | 57% | 2329 fps | 95% |
| Hodgdon H414 | <<locked>> | 80% | 46,311 psi | 76% | 2510 fps | 99.6% |
| Hodgdon H4350 | <<locked>> | 80% | 49,139 psi | 81% | 2526 fps | 99.3% |
| Hodgdon H4831 | <<locked>> | 84% | 40,582 psi | 67% | 2405 fps | 95.6% |
| Hodgdon H4831 SC | <<locked>> | 84% | 39,958 psi | 66% | 2392 fps | 95.4% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 40,451 psi | 66% | 2365 fps | 100% |
| Hodgdon Retumbo | <<locked>> | 86% | 32,822 psi | 54% | 2359 fps | 95.5% |
| Hodgdon Superformance | <<locked>> | 80% | 45,832 psi | 75% | 2536 fps | 99.4% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,630 psi | 45% | 1444 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 43,033 psi | 71% | 2408 fps | 98.8% |
| IMR 4451 Enduron | <<locked>> | 80% | 48,921 psi | 80% | 2493 fps | 99.7% |
| IMR 4831 | <<locked>> | 80% | 42,395 psi | 70% | 2415 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 39,813 psi | 65% | 2352 fps | 95.5% |
| IMR 7828 SSC | <<locked>> | 86% | 39,117 psi | 64% | 2434 fps | 95.9% |
| Lovex S065 | <<locked>> | 80% | 46,485 psi | 76% | 2448 fps | 99.9% |
| Lovex S070 | <<locked>> | 80% | 44,657 psi | 73% | 2438 fps | 99.5% |
| Lovex S071 | <<locked>> | 80% | 28,152 psi | 46% | 2119 fps | 95.9% |
| Norma 204 | <<locked>> | 80% | 42,960 psi | 71% | 2444 fps | 97.9% |
| Norma 217 | <<locked>> | 94% | 30,806 psi | 51% | 2306 fps | 95.4% |
| Norma MRP | 74.1 gr | 80% | 34,476 psi | 57% | 2356 fps | 97.2% |
| Norma URP | <<locked>> | 80% | 43,845 psi | 72% | 2454 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 35,897 psi | 59% | 2375 fps | 95.1% |
| Ramshot Hunter | <<locked>> | 80% | 42,685 psi | 70% | 2454 fps | 99.6% |
| Ramshot Magnum | <<locked>> | 84% | 31,865 psi | 52% | 2267 fps | 95.5% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,268 psi | 46% | 1480 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 44,512 psi | 73% | 2487 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 42,815 psi | 70% | 2503 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 29,660 psi | 49% | 2274 fps | 95% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 41,046 psi | 67% | 2530 fps | 95.5% |
| Rottweil R 903 | <<locked>> | 80% | 51,547 psi | 85% | 2516 fps | 100% |
| Rottweil R 904 | <<locked>> | 80% | 38,696 psi | 64% | 2336 fps | 95.8% |
| Rottweil R 905 | <<locked>> | 80% | 36,564 psi | 60% | 2336 fps | 96.5% |
| Rottweil R 907 | <<locked>> | 80% | 47,558 psi | 78% | 2470 fps | 99.4% |
| Shooters World Long Rifle | <<locked>> | 80% | 46,485 psi | 76% | 2448 fps | 99.9% |
| Shooters World SW4350 | <<locked>> | 80% | 44,657 psi | 73% | 2438 fps | 99.5% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 45,266 psi | 74% | 2398 fps | 99.5% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 36,260 psi | 60% | 2333 fps | 96.4% |
| Somchem S355 | <<locked>> | 80% | 51,561 psi | 85% | 2513 fps | 100% |
| Somchem S361 | <<locked>> | 80% | 39,189 psi | 64% | 2326 fps | 95.1% |
| Somchem S365 | <<locked>> | 80% | 40,756 psi | 67% | 2411 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 37,043 psi | 61% | 2320 fps | 97.5% |
| Vihtavuori N150 | <<locked>> | 80% | 49,240 psi | 81% | 2444 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 45,353 psi | 74% | 2451 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 31,981 psi | 53% | 2205 fps | 95.3% |
| Vihtavuori N550 | <<locked>> | 80% | 44,570 psi | 73% | 2451 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 35,578 psi | 58% | 2329 fps | 99.7% |
| Vihtavuori N560 | 77.8 gr | 84% | 40,059 psi | 66% | 2461 fps | 95.7% |
| Vihtavuori N565 | <<locked>> | 88% | 37,130 psi | 61% | 2392 fps | 95% |
| Vihtavuori N568 | <<locked>> | 96% | 42,699 psi | 70% | 2546 fps | 95.4% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 44,382 psi | 73% | 2415 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 46,499 psi | 76% | 2513 fps | 99.6% |
| Winchester StaBALL HD | 73.3 gr | 80% | 27,992 psi | 46% | 2277 fps | 99.9% |
| Winchester Supreme 780 | <<locked>> | 80% | 33,721 psi | 55% | 2251 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 77 powders for .338 Lapua Mag. loaded with the .338 | 260gr | CutEdge Maximus. Hodgdon Retumbo delivers the highest muzzle velocity at 2,766 fps; across all powders the maximum-charge window runs from 1,617 fps to 2,766 fps. ADI AR 2217 gives the best case fill at 100 %, and 77 of the 77 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 260.0 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 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 | 260gr | CutEdge Maximus 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.