Woody,
Please reconsider. Don't do this. The main reason that Remington ceased making this firearm was reliabilty. You increase chances of problems if you deviate from an already suspect design. That's one reason why Remington no longer produces new 742 barrels/actions. In gunsmithing school, ALL my instructors called this the 'Jam - O - Matic'. I have worked on several and while they function OK, I have revised my opinon on working on them. They are now on my 'guns I won't work on' list. For me, it's a liability issue. I don't want to ever speak with the widow of a 742 owner (or worse yet, her attorney). Jim