I know your rifles! I've seen them, and talked to you, at the OAC show. A true artist you are!I check every round I build to ensure it drops into the chamber of the rifle I plan to shoot it in. But for pistols I check the first round for fit and cycling function, and then load them all.
I shoot a lot of old 1800's single shots in long range events, and nothing more embarrassing than to be on the line ready to shoot and have a cartridge that wont fully chamber and I have to fight or struggle to get the action closed. So I'm a bit picky about those rounds for my old single shot rifles.