I had a calico .22 once, the old mag had been overtorqued and was only (mostly) reliable up to around 30 rounds. I finally got a new mag from the mfg (on backorder the better part of a year) and it didn't work any better. Fun fact, it appears that the "Calico" bolt is merely a Ruger 10/22 bolt installed upside down.This one is,lol. 100rds of fun!View attachment 503067