I have been reloading for more than 40 yrs. Winchester & Remington brass is all I have ever used, never any problems with either of these.
Me too. Except closer to 30 years here!
38 years here, mostly Winchester. Started with Federal for my 7mm RM and still use it - it ain't broke. When Dad gave me his .22-250 he gave me 1500 pieces of Federal brass and a few hundred with other headstamps. Kept the Federal. For the 5.56 it is mostly Lake City. I have other 5.56 brass from pickups but it goes for plinker loads and doesn't get recycled - at least not by me, a reload, fire and forget thing. Starline for my .45-70 and .375 Win. Remingotn for my .280 Rem.
But mostly Winchester for the bulk of shots taken at the range or in the field - .243 Win .257 Roberts, 6.5-06AI (fire-formed from .25-06), .30-30, .308 Win, .30-06, .300 WM and .338 WM. Can't say the choice has been a bad one. The WW brass and handloads have allowed me to hit the steel at 600 pretty consistently and five of my rifles using WW brass have been used to hit clay pigeons at 600 yards. The 6.5-06AI took out 5 with 10 or 11 shots and the misses weren't by much.
No competitive shooting except against my previous results.