Thanks. Lots to consider. Always fancied a rook rifle. I do have black licence, but a 22 hornet might be nice.Unless it’s worn out, don’t change it.
Obsolete calibre is just that, once it’s on FAC (a simple variation and statement to FLO) you can make small quantities of ammunition, typically for study and testing.
You may have to make the cases and also often for those you mentioned, have a special mold made and custom dies..
If you want something you can feed easily you can buy a .410 converted rook and have it sleeved to something like .32ACP. Cost can be high, like any other re-barrel but the doner (.410) should be very cheap or free.
Trouble with most old pre-1900 is that it’s only really suitable for black powder and frequent use with nitro powder will excessive stress the metal. i.e. it’s fine for black powder and occasional use but not frequent and persistent target shooting. Needs to be selected carefully.


