Racepres Posted October 13, 2006 Report Share Posted October 13, 2006 Saw a barrel for sale that has been rechambered from '06 to 308. I had thought that this left the possibility of a "ring" in the chamber. How would one determine if a ring exists, short of mounting, firing, and measuring the case?? Any ideas? Thanks.. MV Link to comment Share on other sites More sharing options...
Doble Troble Posted October 13, 2006 Report Share Posted October 13, 2006 Chamber cast. Link to comment Share on other sites More sharing options...
Racepres Posted October 13, 2006 Author Report Share Posted October 13, 2006 Chamber cast. Duh??? Is that what that cerrosafe I have is for??? My poor abused brain aint in gear!! Now Is there a method, like w/ a paperclip as done w/ a ctg. when checking for incipient head separation?? You know something a guy can do on site at the show or wherever?? Thanks.. MV Link to comment Share on other sites More sharing options...
Clemson Posted October 13, 2006 Report Share Posted October 13, 2006 If the barrel was recut from .30-06 to .308, it was cut back and rethreaded. The .308 is a half inch shorter than the '06. That would probably take care of any shoulder issues. The problem would be the reverse situation where someone tried to lengthen a .308 to make a .30-06. And yes, a Cerrosafe cast of the chamber would be a good idea no matter what. Clemson Link to comment Share on other sites More sharing options...
AzRednek Posted October 15, 2006 Report Share Posted October 15, 2006 If it is a US mil-surp barrel make sure the conversion wasn't done by useing a plastic spacer in the chamber. I guess it is even possible to have used the US GI spacer in something other than a GI barrel. Link to comment Share on other sites More sharing options...
Racepres Posted October 15, 2006 Author Report Share Posted October 15, 2006 I would not doubt that it may be a us mil. barrel, [springfield perhaps, not 1917] I will try to "see" an insert. Having never heard of such a device, could you elaborate , or drop a link?? Thanks. MV Link to comment Share on other sites More sharing options...
AzRednek Posted October 15, 2006 Report Share Posted October 15, 2006 I would not doubt that it may be a us mil. barrel, [springfield perhaps, not 1917] I will try to "see" an insert. Having never heard of such a device, could you elaborate , or drop a link?? Thanks. MV I don't know alot about them, sorry I don't have a link and haven't seen one for many years. They hit the Shotgun News surplus market in the early to mid 70's. Best I recall they were used by or expermented with by the US Navy after the US adopted the 7.62. I bought a pos National Ordnance Tankers Garrand in the 70's that was caliber stamped 308 Win (not 7.62) and a gunsmith discovered the spacer and it was easily removed with a broken shell extractor. A guy I used to shoot with on one outing used the spacer that came out of my M-1 in his 03 Springfield and M-1. The cheap 7.62 Spanish surplus ammo we used had a tendancy to hang up in the M-1 but a couple of clips US GI 7.62 functioned fine. I gave him the spacer and he was going to try milling it down to use 7.62 in 7.65 Argys. I don't know if he ever followed through. Link to comment Share on other sites More sharing options...
Sailormilan2 Posted October 16, 2006 Report Share Posted October 16, 2006 Cut about 1/2" off the threads, rethread, then rechamber and you can convert a 30-06 to a 308. I have two 1912 Steyr Mausers that were converted to 308 by using converted 1903 Springfield barrels done that way. Link to comment Share on other sites More sharing options...
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