Win is very good 308 brass and used by a lot of shooters in competition. It is tough brass and has a larger case volume which is very handy when trying to get more oomph on those heavies.
Neck thickness is also much thinner. Annealing can be spotty but that can be said for other brands and comp shooters anneal often.
If you can find Win brass that was not produced more then 2 yrs ago, let me know cause I have been backordered since 2012.
Watch neck thickness on cases. Some are over 15 thou and that can cause fitment issues in many chambers. Also, confirm that the necks are even. Some of this thick stuff can vary all over the map. Same goes for case weight which may or may not affect case volume but check anyways.
Some chambers are designed to work with 12 to 13 thou thick necks.
As for bullets, there is a lot of competition going on right now. All major brands are trying to take a chunk out of the F TR world. Huge volume shooters willing to pay for match bullets. Don't discount brands like Nosler and Hrn. Their QC have improved.
Sierra is steady despite not updating their product in decades.
Berger is still the top choice for FTR competitors and their bullets are superb for both QC and ballistic performance.
Due to a lack of supply, I started testing PRVI brass. Is economical and looks a lot like another brand. Built like a tank, thick necks, no burr in flash hole, etc, etc. Sizing and volume have been super consistent even as weights have varied. Complete neck prep including reannealing and it is shooting very nicely in my new FTR rifles. Case volume is less then Win but performance is similar.
Less money too...
Jerry