RE: Newbie Shotgun hunter, slug for Encore 12ga?
Hornady SST
Remington Copper Solids
Remington Core Lokts
The SST's will be the cheapest and should certainly provide adequate accuracy for 75-100yd shots. If you have the time and eneregy I would also try the Copper Solids as they are often particularly accurate in a wide variety of guns. Finally, if you are lucky and the Core-Lokts shoot well in you gun then you have hit a home run as they are some of the best quality, flatest shooting, slugs in the market.
JC