How about a Redding Type S with .334 or appropriate bushing. Take the decapping pin and expander ball out and throw it somewhere. Get you a mandrel die with the appropriate sized mandrel for your brass thickness and desired neck tension....then get an LE Wilson 300PRC Bullet seating arbor press die.I’m being lazy here, what’s the consensus on reloading dies? I mostly use redding or forsters dies but I don’t see 300 prc dies on forsters site, I can get redding type s which I‘m good with just not sure if the seating stem works with A tips. Saw hornady’s match grade set they look ok they have a seating stem for the A tips but no one has a .334 bushing for sale.
Want to talk about near perfect rounds...these things will eliminate any excuses for shooting poorly....atleast from that part of your reloading/shooting.