See that's where you're very much wrong, I shoot 1000 yard F class NRA matches. I know what my ammo can and cannot do.
I'd be willing to bet you start measuring with micrometers, (not calipers) Neck turning your brass, ordering reamers with specific neck dimensions, checking runout, you'll see the difference. like I said, you use what you like. To me Lee is nothing but a starter set and made for mediocre production ammo.
And by the way, you don't crimp match ammo.... Ever.



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