I've got a book that talks about how to reprime primers, if people want me to write down what it says I can.
Please do, I didn't think that was possible.
I'm going to copy what the book says word for word, things in parentheses are things I've added to say what the pictures from the book show.
I think you can to skip the first two steps since you mentioned your already reloading your own ammo so I'm going to assume you've got the tool that can remove the primers, but I'm going to include it just in case.
Reusable Primer
A method of making a previously fired primer reusable.
MATERIALS REQUIREDUsed cartridge case
2 long nails having approximately the diameter as the inside of the primer pocket
"Strike-anywhere" matches - 2 or 3 are needed for
each primer
Vise
Hammer
Knife or other Sharpe edged instrument
(It doesn't mention this but a file should also be on this list.)
Procedure1. File one nail to a needle point so that it is small enough to fit through hole in primer pocket.
(Next to this is a picture of the nail being filed, and a picture of a nail with a pointier tip.)
2. Place cartridge case and nail between jaws of vise. Force out fired primer with nail as shown.
(The picture shows the nail being inserted into the cartage case in a way that it sticks into the primer, then put into the vice in a way that allows the primer to be pushed out when the vice is closed.)
3. Remove anvil from primer cup.
(Next to this is a picture of the anvil it looks similar to a three leafed clover.)
4. File down point of second nail until tip is flat.
(Next to this a picture of a nail with the tip flattened.)
5. Remove indentations from face of primer with hammer and flattened nail.
(Next to this is a picture of the flattened nail in the primer cup with a hammer striking it.)
6. Cut off tips of the heads of "strike-anywhere" matches using knife. Carefully crush the match tips on dry surface with wooden match stick until the mixture is the consistency of sugar.
(Next to this is a picture of a match with the pieces labeled.)
CAUTION: Do not crush more than 3 match tips at one time or the mixture may explode.7.Pour mixture into primer cup. Compress mixture with wooden match stick until primer cup is fully packed.
(Next to this is a picture of the match stick compressing the mixture into the primer.)
8. Place anvil in primer pocket with legs down.
(Next to this is a picture of the bottom of the cartridge case with anvil placed in the primer pocket.)
9. Place cup in pocket with mixture facing downward.
(Next to this is a picture of the cartridge with the anvil in it and the primer cup with mixture being placed in to it.)
10. Place cartridge case and primer cup between vice jaws, and press slowly until primer is seated into bottom of pocket. The primer is now ready to use.
(Next to this is a picture of the cartridge in a vice with the primer slightly sticking out.)
Hopefully this can help you, if you want to see the pictures I can scan this for you.
If you want to know what you can do with the left over match bits the book contains a use for those as well.