I just received a Winchester Model 250 in my gunsmithing shop. The action had some issues that boiled down to a flaw in the breach block. There is a pivot pin in the H shaped breech block locking piece that fits into the breech block. Apparently, there are models with and without this piviot pin on the locking piece. This particular rifle has the pivot hole on the breech block cracked out. I found another replacement block, but it is lacking that hole. Are these interchangeable otherwise. I plan to weld over the crack and remill it out to make it original. Otherwise, I will use the part that I purchased as a replacement. Any information would be appreciated.

A few details on the rifle: I am thinking that it is a later model 250 with the pressed checkering in a beech or alder wood stock, ie, not walnut. It has the steel magazine tube. I am not sure what other variations might exist.

Thanks ahead for the help

Jon