I am getting my 20 guage ''TAMER'' shortly-the primary use will be a truck gun for potting grouse-but I chose the 20 guage over the 410 because I wanted to shoot slugs,if I chanced on a deer.The Tamer has a 20 ''full choked smooth barrel-what would be the most suitable slug for this gun-what sort of accuracy can I expect,and what is the practical range?