A related case to our 585 is the 24ga FH that has 3" chamber and
brass cases reworked 577NE cases, that we reduce the rim down
to .720"... the 24ga size rim...We make minimum chamber so that 24ga
plastic cases, 2.5" long just fit. And min chamber cuts down on a lot
of brass case expansion, which the wears cases out.

The barrels are same bore barrels as our 585 and the hollowbase minie
bullets work great in it, the ones that are .585", 440gr to 540gr.
Makes hairy 24ga gun for deer, etc. Be useful in shotgun only areas.
Guys on GB sells the .585" minies. And the brass cases, we don't have
to wait for them to be made.

[Linked Image]

Here is what 585HE barrel and its monoblock look like before
screwing the barrel in.This one was 585HE, but process same if
monoblocking in 24ga FH...Ed

[Linked Image]


Ed Hubel