Carcano

How hot was the temperature outdoors & how often did you shoot? That barrel needs to cool in-between shots during the summer months. Also, what were you using for cleaning at the range & what powder & what powder charge were you using??

Also, Cheap Shot bullets come with Cheap Sabots. Buy some MMP plastic sabots or ones that say " magnum use & easy loading" . Speaking of ' good & cheap" , Windex window cleaner is a good fouling reducer & the " Traditions" line of plastic sabots work well & are cheap also.

Another thing! Those Cheap Shot bullets fragment alot upon impact of an animal. You don' t want to be eating that lead. Thompson recommends you only practice with those bullets... then switch to their same sized/same trajectory 240 grain XTP sabot/bullet to hunt with.