When Teetop mentioned the 5th round flying I ran into a bit of that with mine. These barrel ring carbines can do that. I let mine cool down a bit before continuing. I have an old Marlin that has taken deer and it will start going South as the barrel heats up. AS its 4 shots for 4 deer I don't get excited about that. WE measure accuracy by 5 shot groups. With some rifles you may wan to rethink that. Down loading to get 5 shot groups may not be as wise as just trying 3 shot groups. Old saying, one shot we eat, two shots maybe, 3 shots nothing.
DP