As mentioned, their are limited uses for a shotgun where a Full Choke is needed, hunting Turkey, Crows, shooting Trap would be about it. Since steel doesn't really pattern any tighter through a Full Choke then a Modified, most Waterfowl hunter rarely use it anymore. That having been said, one can reduce the density of your patterns through a Full Choke by handloading(spreader loads(which open up the pattern), lighter shot charges(which have the same size pattern but with less choke in it)).