what's the best action for a 338 lm build?

With respect to opinions, I checked with Kirby Allen and J E Custom via private message. Both were comfortable with 1.250" breech diameter. I now understand that your personal recommendation starts at minimum 1.300".
 
With respect to opinions, I checked with Kirby Allen and J E Custom via private message. Both were comfortable with 1.250" breech diameter. I now understand that your personal recommendation starts at minimum 1.300".

They and a lot of others are willing to use a 1.250" breech with a 1.125" thread. Many people are satisfied with marginal shoulder widths, some are not. I'm one of the ones who isn't.
 
Am I mistaken, or do the Weatherby Mk-V actions have a 1.0625
barrel thread tenon ? The 378 series magnums have the same
boltface diameter as the 338 LM.
 
Warning! This thread is more than 11 years ago old.
It's likely that no further discussion is required, in which case we recommend starting a new thread. If however you feel your response is required you can still do so.
Top