There was a time when shotguns were regulated with a specific cartridge to produce a required pattern. Most guns today are choked to a certain constriction and we either change choke tubes or change shell types to get required results. The ‘Choke in 20 ga. and smaller’ thread pointed out that chokes are all over the place. How to we fine tune performance of the barrel constrictions we are dealt?
Using B&P shells my favorite 20 bore double gives me gives me a nice 30 and 40 yard pattern, but it is a handicap in the woodcock alders. My experience with spreader loads is that while they produce an open pattern the shot distribution is clustered with considerable gaps. What do the considered gentlemen of this board use in the way of shells to produce a more open pattern? Do fibre wads contribute to open patterns?
