No not caliber my lil rifle is a model 600 35 Rem Today was next to last day of our Pa season so I took the day off work , perfect morning about 20 degrees and a fresh inch of snow on the ground . Got in my stand about 7 fired the shot at 7:15 . That was my fastest ever ! Was a 70 ish yard shot . Load was the 190 gr ranchdog and 37 gr 4895 . Hit her a hair high behind the should exited at the top of the blade opposite side . Still got the top of the lungs she ran about 50 yd then crashed . Exit hole was about 1" . Been using this lil gun for many many years now the last 6 with cast only and once again she hasn't let me down .