+1 on redding dies, personaly a funnel is a funnel, get a headspace comparator set much more useful than bullet comparator gauges IMO. Ive been fine with calipers to the .005 and all my rifles (that I've kept)shoot .5 or better off a bench, but Im a hunter not a shooter.
Know where your lands are, don't buy 3.99 primers instead of 5.99 primers and go shoot.
Pick one rifle to chase groups with and be happy with all the others shooting whatever it is your capable enough to gain an advantage from a hunting scenario or you'll be a barrel makers best friend.