Yes I do, and yes it does.
A floating barrel allows for repeatable, consistent harmonics. The only variation to this is a well designed, thoroughly tested pressure point... which no one really uses anymore, because they typically didn't stay consistent for extended strings of shooting.
You don't have to handload, but the quality of loaded rounds that you can produce, with experience and practice, can exceed the quality of the most costly factory match loads.
PM me... if you're interested, I have something you might like to read.
C