lasttombstone
Kinder, Gentler LTS
Maybe I shouldn't read so much but I saw this on another forum and wasn't sure about it. I know there had been some discussion here a while back about the 1898 ruling on metallic cartridges but this seems to be something different in defining the ignition system. Basically, from what I can understand, in in-line which uses a modern type primer will now be classified a firearm and be subject to the same regulations as a modern rifle. Here is a brief excerpt from the ATF memo.
However, muzzle loading weapons with “in line” firing
mechanisms designed or redesigned to use modern conventional firearm
primers do not meet the definition of antique firearms and are
subject to regulation as a firearm. Primers are not an antique
ignition system and are ammunition for firearms subject to regulation.
For anyone who wants to read the entire thing it can be found here: https://www.atf.gov/file/83981/download
To save you some time, it is almost at the bottom of the memo.
However, muzzle loading weapons with “in line” firing
mechanisms designed or redesigned to use modern conventional firearm
primers do not meet the definition of antique firearms and are
subject to regulation as a firearm. Primers are not an antique
ignition system and are ammunition for firearms subject to regulation.
For anyone who wants to read the entire thing it can be found here: https://www.atf.gov/file/83981/download
To save you some time, it is almost at the bottom of the memo.