Customer brought me a single shot rifle for a chamber cast. Barrel is marked "219-22". Anyone have any info on this cartridge?

might be the .219 Zipper; necked down .25-35 from the 1920s. roger

That was my thought as well.I built a 219 zipper in the 80's on a Remington rolling block action. Sold the rifle years ago but still have the dies.

Without a chamber casting, it could be a 219 Zipper or a 219-22 hornet. There are so many weird wildcats in the world it's hard to keep up with all the names.

Yep,cerosafe does'nt lie.(no I don't work for Brownell's [an excellent company btw]nor a perk for them) but they do carry cerosafe + it is the only way to my knowledge to make an accurate chamber cast.You right about all the abstract wildcat calibres that abound.Worth checking but I'll bet you a dollar to a doughnut that that is a 219 zipper.Please post your final findings;that way we all learn something,maybe.

you said single shot did you not? if so is it a Savage mod. 219 single shot, It came in a 22 hornet caliber. stop all progress do a chamber cast, then you will know what you have, its the only way to go. and cheap to chamber cast..