Sort it and save it. Eventually I will load some of it up for use in those times where it's hard to collect your brass. Like in the woods or something.
I use the small primer brass along with moon clips in my 45 ACP revolvers, the small primer is easier to set off than the large so I can get a slightly better trigger pull using them.
It was a dumb idea to take a 100 year old design and arbitrarily redesign it. It was the classic answer to a question no one asked.
I throw them into the recycle can and bring them to the recycling station. Brass is brass to them.
I have a about 5k small primer and about twice that many large primer. I keep them separate. I will go out and shoot only small or large but never together. Really not that hard.
I have not loaded any small primer 45acp brass for the simple reason that I have thousands of large primer brass and I don't seem to have any small primer 45acp brass.
I save them up until I have a couple hundred of them. I then load them. I save those to shoot for places I know I am going to lose it anyway. I also have a few hundred steel cased rounds for going to the places that won't let people pick their own brass. They can have the steel cases.
I'm with the "chuck 'em" class. I have so much large primer that it's not worth it to me. Don't even want to worry about the possibility of missing a small one.
I use it for woods walks with my .45's where I don't plan to pick up my empties. In actual range testing, I've found no difference in accuracy with small primers vs. large primers. Rod