On live game, only if shooting over a pointing dog and engaging in 10-15 yards. 10 shot does not hold energy over the same distances as other shot. I do not argue that some may effectively push it out to 20 yards, but advise you test in tighter.
That said I almost exclusively shoot over a point and have moved to larger shot as my standard (#7). I did this to reduce number of shot hitting the bird and to ensure solid hard clean kills.
I would never use #10 for wild birds except under prefect conditions. If you pass shoot much (something I am not particularly good at) I would definitely stick to larger shot. My solution when going to blocking (the rare time I block on pheasant) is to increase charge size (from 1 oz to 1 1/8) and leave everything else the same shot size and velocity (about 1150 for everything)
You owe to live game to use the most effective killing load within the constraints of the type of shooting you are doing and your individual strengths and weaknesses.
