Have a custom edge and was kicking around a light weight carry 338.. Have a chance to get a new 700 ss 338 Rum 26" barrel. First i would install a break but wondering of opening it up to a edge how it would perform with that light factory barrel. Second thing would be let it alone and work witht he standard 338 rum. It would be a lr and elk rifle thinking the 300 smk would be to much what would be another choice of bullet for this purpose?