Here is a good source for reclaimed shot for reloading. It's 7 1/2 & 8's mixed. I have used it for trap & quail hunting. It's clean and works fine.
Sold by www.leadshotrecovery.com Clubs can get together and buy it by the 3,000 lb barrel for $.80/lb. Also avail. in 50 lbs boxes shipped free to 48 states for $59.99
It's also for sale on e-Bay at
Give it a try.