Start with Virgin Brass and drive a positive headspaced false shoulder,out of the gate. From there,never move more brass than you have to. Hint.............
This is pretty much my mantra.
But I have purchased a lot of once-fired brass that I've annealed and meticulously sized as little as possible. I also separate ammo by the gun for which it's loaded. I prefer neck sizing in collet dies, as it reduces the need to trim cases.
I don't load any belted-cases anymore, but I never had an issue with them. The belt never caused any problems for me.
