It has to be a contradiction to believe that you act for the best interests of the shooting public as a whole and also represent a trade association.
Of course the trade association wants a buoyant market and it would be foolish to think otherwise, but at the individual level the interests of the association will be paramount above the interests of a lowly shooter.
I deal with a very similar issue almost every day in local government where an elected councillor is there to represent his or her ward and has to declare a register of interests so that the public can decide for themselves the veracity of the line the member takes. Sometimes a member is carried away on a tide of enthusiasm and rhetoric, and such niceties as declaring an interest get overlooked. But those interests are still there.