Boat tails really only start performing well past 500 yards. Any of the quality 180 grain bullets will work and the partitions are good ones. I'd stick to 180 grain bullets as lighter bullets will start giving you dramatic meat damage at the ranges your talking about.
I alway had good luck with 180 grain Sierra Game kings loaded with CCI mag primers and 4831. Just use a good reloading manual and work your loads up. Usually a load 10 percent under max will only loose a 2 percent velocity and almost gives better accuracy than a max load.
I alway had good luck with 180 grain Sierra Game kings loaded with CCI mag primers and 4831. Just use a good reloading manual and work your loads up. Usually a load 10 percent under max will only loose a 2 percent velocity and almost gives better accuracy than a max load.