I cut my own wads for 12 ga., the Late V. M. Starr used card board and so do I. I use a lot of milk carton boxs for wads Get a gasket cutter in .75 and it should work well . IMHO cushion wads are a waste of time and Money, unless your selling them.

Use 2 card board wads over powder and 1 for over shot. My son has a NE 12 like yours, we have killed hundreds of pigeons at the farm with it. and My H&A, set you measure at 70 gr and use that for shot and powder is hard to beat. I have also harvested 3 Turkeys with #5s using my crud CB wads David has more, My brother Bryan and Nephews have taken close to 15 birds with an old origonal 16 Ga single using 60 gr V for Both shot and powder.

I have a 12 ga barrel for my H & A Underhamer and that is the load we use for it also.

Read and learn: http://members.aye.net/~bspen/starr.html