| Marrakai |
| (.416 member) |
| 17/01/25 05:14 PM |
|
Re: An unusual 24ga W. Collath Double Rifle
|
Quote:
Perhaps a 600 bpe?
There wasn't one...
...it was the 20-bore BP rifle cartridge, brass case!
If it chamber-casts .600 NE then groove diameter might be .615 to .620?
24-bore should be groove diameter .577 to .580
Not much help, sorry.