Re: how much work do you put into your plinking ammo?
I run 50gr bullets over AA2460. Shoots MOA in all my .223s, and I'm a lazy man. I buy 1X brass in bulk, run it through the Dillon swager to open up the primer pocket a little, and crank out rounds on the 650. It's minute-of-rat accurate out to 300, steel plate accurate out to 450, and that's as far as I've pushed it. Gets a trim after the fourth or fifth time, or if I notice any problems. I load in batches of 1K or more, usually, so if any in that batch are too long they all get a run through the Giraud.
That said: The precision rifle load gets: flash hole deburred, primer pocket uniformed, sometimes neck turned, and each load is individually weighed. If I miss, it's not the ammo or the rifle.
Oh yeah- this morning at 2am I collected a nice coyote with that load, downhill across a canyon while my buddy held the light. Dropped her DRT, bangflop, about 250 yards. (Night hunting of coyotes and bobcats is legal here.)
1911fan