We recommend our Classic Cast Press to be used in conjunction with the 338 Lapua due to the large case diameter. If you choose to use the factory crimp die, this press will allow you to accept both the 7/8x14" die set and the 1 1/4 x 12" factory crimp die.
Pacesetter 2-die set
https://leeprecision.com/338-lapua-mag-2di-ldt.html
Large Series Factory crimp die
http://leeprecision.com/fact-crmp-lg-series-die-338-lapua.html
Note that this Large Series Dies will only fit into our Classic Cast press, and some competitor's larger presses.
This die is made into the large series configuration 1 1/4 x 12" thread, due to the case falling within these dimensions:
Bullet diameter .300 - .577 (minimum - maximum)Case length gauge
http://leeprecision.com/gage-holder-338-lapua.html