I've been a varmint (digger squirrel) hunter in Central/Eastern Oregon for 26 years now and have been saving the majority of my .223 brass. This is all Black Hills Blue Box Lake City, approx. 5k+ rounds. I'm just starting to sort it out and a quick inspection shows head stamps from 87-06. I'm under the assumption that Lake City is for the most part decent .223 brass. Is there known years of exceptional or mediocre Lake City brass? Is weighing a method of determining quality? I'm not shooting formal sanctioned competition just a monthly 100/200yd match at my local range. The important serious competition is with my annual varmint hunting group of 26 years. I recently bought a new Tikka T3x .223 Varmint and put it in a KRG Bravo with Athlon Ares ETR scope with a lighter trigger spring and the gun is shooting respectable off a Harris bipod with 69g Federal GMM (7-shot .73" @200y) so it's accuracy potential is baiting me back into reloading after a 30 year hiatus of centerfire rifle reloading. I've spent many hours researching new reloading equipment and techniques since the last time I had the band together loading for my '84 Ruger M77 Varmint in 22-250. To date I've purchased Hornady headspace, comparator, and OAL tools for starters.... but the foundation of it all starts with the brass in my opinion. This forum possesses a wealth of experience and knowledge and I genuinely respect and appreciate what I've learned to date. Your input is appreciated.