Hi all, I was wondering if a 410, would be effective enough for turkey, because I am going to take my cousin hunting with me, and this will be his first yr...I have plenty of shotguns, but they are all 12's(and a old 20g), and he isnt a "big" twelve. I almost said no but I found the 410, and I was wondering if it would be plenty within 20yds? Thanks in advance