chambering 338 W
 

If using Lapua brass, do you guys ream the additional length into the body of the chamber and fire form,or trim the additional length off the case :confused:

Could you elaborate on what you're asking? I presume you're talking about a 338 Whisper, but what Lapua cartridge? Are you talking about making the equivalent of a 338/7mmBR out of a 308 case? I'm confused too.

Got it figured out Lou, Lapua brass was just short of .040 longer than the Rem 7 BR brass in the neck....trimmed the brass and it worked with the BR headspace guage.