David,
You can get a "b" sized bell in standard weight copper on an X4 body - remember that they build to order and are a custom shop. Also keep in mind that if you have a tunable bell model, Schilke bell options are near endless...
To answer your second question I will defer to a little bell history for Schilke:
Paul Jeniga was an employee at Schilke that came up with the process of creating 1 piece brass bells. ON PIECE - NO SEAMS! To make a long story short, Schilkes brass bells are made by the Jeninga Brothers in Wisconsin now.
I know that Anderson Plating makes the light copper bells for them and possibly the regular copper ones (unconfirmed). The light ones are fabricated electrolytically. I would surmise that they do not have a setup to form the larger bell flair version. Of course with Schilke being a custom horn builder I am sure anything is probable, I did not push the question because I was confused and calling a "beryllium bronze" a copper one - to Schilke this mean I want a standard weight copper bell.
You can always contact their Sales Manager Phill to inquire about the possibility of a one off bell of this fashion. Phil can be reached via email at
Phil@schilkemusic.com or by phone at 1.708.343.8858
let us know what you end up doing!
-marc