I can save thousands of Estate shells anyone wants. The shooters at my club shoot and throw them away. Let me know if you're a cheap shipping address to zip 02359. I'll send them for the actual postage.
I use the Claybuster 2100-12(12SO) for both 1 oz and 7/8 oz loads. These wads are made for straight wall cases like Estates and Top Guns but there is load data for and I use them in tapered cases (STS, AA types)as well. It has become my favorite I use them for everything and have had excellent results, very consistent.