RE: Need help selecting choke tube for 870 Rem. mag.
Hastings .665 with 3" mags & 2oz. of # 6
Comp N Choke .665 3" mags & 2oz. of #6 or #5 both work good out of my 870
out of my 1100 mag I use a hastings .660 with 3" mags, 2oz. of #6 or #5.