I also had a buddy who taught cww classes. He really got tired of sweeping up all the once fired brass. I just happened to ask him if I could have some of the 38 special brass. He cheerfully handed me the broom and dust pan and said it's all yours. Safe to say I have a 40mm ammo can so won't run out anytime soon and that was some years back. A lot of it has the cannelure on the case so safe to assume it's wadcutter brass. The rest is mostly Remington with no ring. gave up scrounging brass long ago, my back is reminding me of how much I've picked up and inspected then tumbled. Frank