Gunsmithing 300 Norma Mag using a Surgeon 1086R action?

The Lawn Ranger

Gunny Sergeant
Minuteman
Oct 11, 2009
1,254
12
57
Northern Kentucky
I have a 1086 long action chambered in 284 win that I am considering converting to a 300 NM.

I am not sure if the .473" (.308 Win W/Remington Style Extractor) can be opened up to .590” (338 Lapua Mag.) boltface.

has anybody attempted this? Is this even possible/safe?
 
I would not open any .705 or smaller bolt diameter up to .590 , I know it has been done before and Remington does it too, but you should read Jim Borden's write up on the matter. I consider him to be on a higher level than Remington anyway