I have ultimate ultra light weight tubes and the shoot very well, as you know they are rifled and have long forceing cones. For the money the regular light weight tubes should work fine. I believe if it were mine I would just get the short tubes or even chambers. I see biginers shooting chambers at skeet and the 28 in a 12 works great at skeet. A 28 in a 20 should be even better.

bill