FWIW: I have used the H-48 formula and it works fine for reloading cap-n-ball revolver caps (i.e. tap-o-cap ) and also recycled Winchester small & large pistol primer cups.
What I found is that you MUST do for 100% reliability: (Rugers, Uberti, and Pietta cartridge guns)
- After removing the firing pin dent ("nipple") you need to anneal your primer cups.
This is a must as the area under the anvil is now much harder than before.
- Cover the primer compound with a small circle of nitrated paper (cigarette paper) you punch out with a leather punch
- Seal the primers with a small drop of diluted shelac
- Seat the anvil so that it doesn't appear to "proud" above the cup
I've had really great success using this method with non-plated primers.
When I started out, I was getting 1/3 of my primers were dudds with plated ones.
But then I started to anneal my primer cups and I've not had a single misfire.
Care must be taken to avoid any moisture during this process, as that will directly impact the reliability of the ignition.
Lastly, and this one should be obvious, you need to run a cleaning patch with your favorite moose-milk through your bore after a shooting session.
Please take care. This is NOT a fast process and you need to reserve at least an hour to dedicate to the process from start to finish. Do not try and do more than 100 primers at a sitting until you have your technique down. But, desperate times call for desperate measures...