I shoot a 30/06--180 grain bullets--"Core-lokts or Hornady". To be honest after I shot---- The work starts, I really have not paid that much attention. I'm busy getting the hide off, quarter the elk & looking forward to that LONG PACK OUT !! 9 times out of 10 it's uphill !! I don't think I do get many pass thru's. I do know that the heart/lungs are generally blood pudding.