Going from a 22" to a 32" barrel with trapdoor loads would probably lower the recoil due to the added weight of the barrel. Velocity increases from 22" to 32" barrels is rather low, typically resulting in diminished increases because pressures have already started dropping substantially even with stout loads. Trapdoor load versus per inch of barrel increases dont gain much in velocity to increase recoil much, and the added weight of the barrel could offset that gain.