When I started hunting in a non-rifle county here in Wisconsin I almost went the slug gun route before settling on a centerfire handgun. How far do you figure you can hunt with your slug guns?
Pretty easy to figure the BC of the slug if the mftr does not give it by using any ballistics program.
From there simple wind drift numbers for 100 yard and 200 yard at 10 mph is all I use.
I make a simple BDC diagram chart with exact ranges for each circle with wind drift for 100 and 200 yds. Laminate in credit card size and that is all you need.