John,
Did you go to the video link I booked marked in my post?
No cylinder reaming is to be done.
S&W says the bore of the cylinder for the 45APC and the 45LC are the same? I understand what you are saying and I understand how important cylinder to barrel alignment is but, but, but that still does not explain the members shooting results.Unless the conversion he had done messed with his alignment.
Please, look at the conversion process video, I know you are unfamiliar with this type of conversion by the questions you have asked through out this thread. I will still have a fully functioning 45LC, the conversion does not affect that.
Thank you
Penmon