Here is a 9mm Galand with a steel case made for reloading
This snippet is from Album-Galand and states that the downside of these new guns is the expense of having to buy cartridges so that issue is solved with these durable cases that can be reloaded many times with primers and bullets you can make with their mould.
Here is a 12mm Galand with I think a Pertuiset explosive bullet.
a Perrin with a bullet shaped differently than typical
A 9mm Galand shot load which I had not seen before
And another variation of 7mm Galand