ORIGINAL: Korak

What I mean by bruising is that when a bullet hits meat traveling at whatever velocity it's carrying energy and that energy is transfered into what it hits.There are way more learned individuals on this site that can give you specifics and calculations I just call it bruising.Tree rats are small(at least in my neck of the woods)and a body shot that's just a little far back will catch a rear leg and there will be bruising.Hitting one in the rib cage is not so bad as there's not a whole lot of meat there but it doesn't take much error with iron sights to make a "bad" hit thus the reason for a scope.My squirrel rig has a Wal-Mart variable scope on it{3x-9x}and high rise scope mount but I'm fixing to change the mounts cause my eyes are not as good as they used to be an I very rarely use the iron sights any longer.
I hope I'm helping you and not "confusing" you tree rat hunting is a blast and will challenge your stalking skills and your patience and besides that they taste great.