one thing to check for is to examine the bore carefully the full length
Ive seen two in last two years with odd problems
one had bright shiny with typical rifling tool machine marks that follow parallel the lands and grooves and looked mint new however it had a squeezed semicircle line at 90 degrees to the bore centerline indicating an insert rod was not used and too much pressure was used to hold the barrel during install
the other one was perfect except for an area near center that resembled a spiral nebula and must have been some event with barrel obstruction - but barrel looked ok external - nebula area seemed a bit bluish color - looked like a reflection but was not
wierd stuff - but brite shiny mint can be misleading
also if the slide to frame fit is loose it is often result of buffing the fitment slide areas rather than protecting them - and is often a tip that some reblue has occurred
Bill
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