I used to get quite a bit of leading, with the store bought reloads, before I started reloading my own. As you, I hardly get any after many rounds, of course I'm a clean freak, and clean after each trip to the Range.
I buy my lead at
www.mastercastbullets.com in case you want to check Mike out. Great product, at a great price, plus he really knows shooting. At least that's what I think!
SN