There's a sticky in the Reloading section on the ASSRA website about making 25-20SS brass from common .223 brass.
In that thread there are also some responses about making .22-15SS brass from the above converted brass.
Nibbing is the process used to draw out the case to a longer length.
An involved machinist type project that requires a lathe and some special tooling for holding and forming.
The 'drawing out' process is done with a roller in the tool holder. Something like the knurling tool, but smooth faced roller(s) instead.
An involved project for sure, but the reading may be interesting in itself.
I want to try the 25-20SS brass conversion for a rifle I have,,just need one more thing to start and that is Time.
The .22Hornet case might be able to be 'retubed' to meet the great length the 22-15 demands. I think the 22-15 is a 2" length case.. The Hornet is something like 1.4"
That would make it a BP only case I believe. Retubing is generally kept for BP loads.
I don't know if there is enough wall thickness in the 22H to allow for drawing it to that 2" length and still have a case wall near the mouth that is sturdy enough.
Old cartridges and making them from common brass can be a fun project if it wasn't so frustrating at times.
Last edited by Kutter; 08/26/26 09:54 AM.
