You're not the only shotgun reloader on this forum. I reload more 12 gauge ammo than all other calibers combined, mostly because that's what I shoot most. I know I have gone through over 100 pounds of shot and 4 pounds of HiSkor 700X this year alone.
Registered trap will do this to you.
WHEW! Glad to see I'm not alone; but no trap for me - now sporting clays and my screen name - I'm all over those........................