I'm having my barrel re-chambered. I ordered all new brass to start over with, dedicated to this chamber.
I'm hoping to up my game somewhat, so I'm considering outside neck turning.
My question is, would I see enough difference at 500 yds. to warrant the expense and effort?
I currently de-burr flash holes, FL size with .002" bump, trim, chamfer, de-burr mouth and clean primer pockets.

new chamber is .223 with a slightly longer throat to accommodate 80gr bullets in a Shilen SM 1/7 bull barrel.
Brass will be Winchester ( I know, but can't afford the good stuff)