.562 vs .564 slides

[pwrjam]

Hello! I've got a couple old Reynolds Bass trombones that I love, but with one caveat: the slides are really heavy. I'm considering trying to have a custom carbon fiber outer slide made from Butler trombones, but Reynolds basses supposedly have .564 bore slides. My question is this: How different is .564 vs .562 really? Has anyone ever put a .562 outer on a .564 inner? Are they that different? Is it just some kind of difference in measuring techniques? How big a difference can 2 thousandths possibly make? On a semi related note; anybody ever replace their .522 bore Conn inners with more common .525 inners? Did it work?

[BigBadandBass]

If you talk to Butler about it I’m sure he can help and can custom make a carbon outer for you. I’m guessing you’re gonna have to send in the slide but he does custom work consistently

[Doug Elliott]

Outer slide dimensions are based on fitting the stockings, not the bore size.

[pwrjam]

Ahh so it's probably doable! Thanks for the responses!

[blast]

Fine to use as the .562 standard....I've done it...Edwards outer on Reynolds inner.