Yes, I have a Double in one.

Very rare chambering - as most you see are
360 2 1/4" - as 7/16th is only a little bit longer.

Alex Henry made a heap of 360 2 1/4"s so it needs to
be stamped to be 360 2 /16th.

Most 360's use around the .366 bullet diameter
but it pays to check / slug the bore.

Bullet moulds are available from anyone who makes
bullet molds - you just order what you want to order.

Brass cases - Bertram, others in the US, I have used I think
9.3 x 72R (or 74R, can't remember which).