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Re: Gruen 460 Auto Bumper [message #5343 is a reply to message #5332] Fri, 27 March 2015 19:33 Go to previous messageGo to previous message
JackW is currently online  JackW
Messages: 1225
Registered: May 2013
Location: Denver
Gruen Authority
General pain in the rear
Site Admin
When you say "Installed new mainspring" did you use a vintage Gruen blued-steel spring or a new white-alloy spring? If blued, then it is possible it is also set. What size/length did you use? Could be too long and thus not fitting the barrel correctly.

All I know is based on hard work & writing by others. I can only aspire to augment this body of knowledge. If I am wrong it is because of my own failings. -me

"If I have seen farther it is by standing on the shoulders of giants." - Newton
 
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