A
Alaninga
Guest
I don't think I've seen barrel dimension question like mine before so I hope it's interesting as well as informative.
I have a Shilen barrel, chrome moly sporter 24" as I left it after contouring on my own equipment.
A bit of info: I chambered it to .250 Ack Improved. I know better now, but then I used a solid pilot reamer of a friends, an older Clymer. The flutes measure .470", I cut a .472" dia head [some slope in my setup]. The pilot was not the best fit but that's not the reason for the .472" head area. Ok,,,present day Winchester .250 Savage brass is about 0.464". Loading hot in a 0.472" chamber is not a good idea.
I'm thinking of chambering to .25-284 to get a correct chamber and clean up the old .250 chamber. HOWEVER, in polishing the OD {EXTERIOR} of the chamber section of this barrel, I turned it down a bit past 'standard' for a Ruger 77 Mark II action. I'll go check the measurement, but my QUESTION IS:
What is the minimum safe OD of a CM barrel chambered in .284 Winchester? I'm talking the OUTSIDE of the barrel at the chamber end. How much steel is necessary for any particular cartridge?
I guess I could call/e mail Shilen, too.
Thanks, and ask anything you need to know if I've left it out.
I have a Shilen barrel, chrome moly sporter 24" as I left it after contouring on my own equipment.
A bit of info: I chambered it to .250 Ack Improved. I know better now, but then I used a solid pilot reamer of a friends, an older Clymer. The flutes measure .470", I cut a .472" dia head [some slope in my setup]. The pilot was not the best fit but that's not the reason for the .472" head area. Ok,,,present day Winchester .250 Savage brass is about 0.464". Loading hot in a 0.472" chamber is not a good idea.
I'm thinking of chambering to .25-284 to get a correct chamber and clean up the old .250 chamber. HOWEVER, in polishing the OD {EXTERIOR} of the chamber section of this barrel, I turned it down a bit past 'standard' for a Ruger 77 Mark II action. I'll go check the measurement, but my QUESTION IS:
What is the minimum safe OD of a CM barrel chambered in .284 Winchester? I'm talking the OUTSIDE of the barrel at the chamber end. How much steel is necessary for any particular cartridge?
I guess I could call/e mail Shilen, too.
Thanks, and ask anything you need to know if I've left it out.
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