Lopezni,
Little off-topic, but to respond to your post, when Savage made the Strikers and H-S Precision who continues to make specialty pistols chambers their handguns for the WSM cartridges.
I use SAUM, WSM, Dakota, and yes, a 338 Lapua Improved (338 Allen Xpress - Hence 338AX). I do have a couple of 6.5-284's and a 6mm-284. These are chambered in XP-100's (rear and center-grip) and in a MOA Maximum.
I hunt, compete, and just have fun with these specialty handguns.