So the 10x bushing came in today. I pulled then stripped the slide and stuck it in the freezer. The stock bushing was very fond of the slide, it did not want to move. So I put a little Kroil on the outside and inside of the slide, let it sit for a bit and after some more encouragement it finally released. The new bushing went in comparitively easy. The 10x bushing measure .002-.0025" over the barrel diameter, quite a bit tighter than stock.