Well I can't say about Bobcats , but I can speak about handgun sjotshells and rats. ( I didn't wish to put bullet holes thru my barn.)

"Close range" really means close. As in single digit feet. Rats have been known to suck up a hit from a .22Mag shotshell , and run off at full speed. CCI .45 Colt shot shells will put down rats reasonably well from within a 10' x 12' stall, but that 's the outside limit. For anything larger than a grain feed rat , I would use a real bullet.