Re: 338 Lapua dies
I use the #2 combo. I only use the body die (since I'm only shooting my 338 out of one rifle) to set the case shoulder back when required, this die DOES NOT size the neck. You will use the S bushing die for the neck, it works by reducing neck to the predetermined inside neck diameter you want, say you want .003 neck tension you determine size you need as follows: measure the thickness of the case neck with a caliper let's say it's .015, take that and multiply by 2= .030. Your bullet is .338 diameter since you want .003 neck tension subtract .003 from .338 ='s .335 now add .335 and .030='s= .365 that is the bushing size that will get you .003 neck tension. There will be brass 'spring back' also minute variations so I always purchase 2 ea larger and smaller. Your last question I don't know the answer too. Hope this helps.
