I'm sure they will do the job as woodcock don't need much lead to bring them down, but if you plan to eat the bird and not have to worry about getting all of the shot out I would use #8 shot for less meat damage and better 'pass through' of the shot.

I would never say anything against Morris and our friends at RST but I think the #10 Woodcock Loads are more of a gimmick. Morris gave me a box of 20 ga. Woodcock Loads and I have yet to use them.