I abhor the idea of using "mixed range brass". I have sorted brass I want and reload. I have anorher bucket for everything else. I do sort. I do keep "batches" separate. A batch, for example is a multi-hundred LC is a 2 or 3 year range. They can always be identified as such. I personally do not believe you can load consistent ammo wirhout using consistent inputs. Have you ever noticed you cannot buy mixed range brass loaded ammo (except at a range that keeps the brass, and it is very tame loads). It would not be a quality, and consistent product. With 38 Special wad-cutters light target loads, sure, it is done. All police ranges were doing that.
I know some people load "any brass" 223". I have over 1,000 of ~usable brass, but choose not to load that. Not when I have plenty of good SORTED brass. Different head-stamps need different treatment. LC will require one time service of the primer crimp. So I buy LC, remove crimp, and have good brass with good consistency. Now if you want to grind out boat-loads of mixed brass blasting ammo, good for you. But I think a lot of knowledgeable reloaders do not. Sorting can also remove your steel Wolf cases and TAA, and FC headstamps which go into my "do not bother with" bucket.
High quality sorted brass is not that expensive. I am very cheap (CPA). But using mixed range brass is an illusion of false economy, or, maybe reloader lazyness. I choose not to.