It's been a while since I was this extravagant even with .22LR ammo, but I did try to see how nasty I could get my 4" 617, so I didn't clean it between trips to the range. It took nearly two months to get through one bulk box and half way thru the second 550rd Box of 36gr plated Federals - over 800 rd total - before vanity won over me. Even then, I had to try a cylinder of CCI Stingers - nothing would chamber after shooting them! I've never been able to shoot more than a couple of cylinders of Stingers - even immediately after cleaning - before they would render my 63's or 617 too nasty to reload.
Stainz