The whole theory of proof loading is subject of great debate. The typical position in the U.S. is to proof the design, but the proofed piece is never used again, and is saved for reference. Very specific measurements are taken before and after the proofing. Proof loads are carefully calculated to predetermine pressures and produce specific values. Proofing stresses the pieces and creates weakness. Once the design is proofed that is usually sufficient. Further proofing of each piece of the design is not considered necessary
When I went to gunsmithing school, in our business law class as well as some of the gunsmithing classes they told us there are no U.S. standards for proofing. If you proof a firearm and then transfer it to someone else you are liable for it if it fails. There are proofing procedures as part of destructive testing. But those pieces are never used except for further testing.
Proofing as done in Europe is done to every piece under strict controls. Here's a link to
The Birmingham Gun Barrel Proof House the talk about how proofing is done in England and Europe.
Sounds like you took prudent action for firing you first shot, I would continue taking those steps for a few shots until it's clear you have not broken anything from the overload.
But post some pictures, we all want to see your gun!
