25lieb
You don't say if you reload or not but if you do here is a suggestion.
I have done this for a few of my Military surplus rifles including my 7.65 Argentine Mauser as well as a Mas 7.5 French Semi.
Get ahold of some military surplus ammo in the caliber you need.
They make a little thing that looks like plastic hammer which is a bullet puller and is pretty cheap and easy to use, I think they still sell them at Mid-Way.
Junk the old powder and bullet. Now you have a primed case to load anyway you wish.
Here a few years back we got ahold of a huge lot of 30-06 surplus and did the exact same thing and are still shooting them today. Most of this surplus has FMJ which is not a good hunting bullet and should be discarded or melted for cast bullets.