receiver sights for sure... you will be glad you got one...
For most accurate handload, I've found 170's with 32.6 grains of RL15 in Winchester or RP brass very hard to beat.
Be sure to FL size the cases if you handload... and some guns even like a small base die for good chamber fit.
I've never had a deer walk away from a 170 grain 30-30...
Dan