Hi Jim
The Prime All kit is functional however there are a couple of issues you will run into. The compound is corrosive to the barrel. The compound is explosive when mixed, so follow the instructions and make small batches. Also the cost is very high compared to what you can purchase them for once you know what those chemicals are. Once the caps are made, you must come up with a way to keep the powder in them or it falls out. Try a cheap hair spray and spritz the cups with it. Also thin paper disc like cigarette paper may work as well. Punch it out with a leather punch, one of those with the wheel on it that has several sizes. I have been down that road and had some successes, and failures. You may want to go to this site. It is about reloading primers, .22LR cases, and percussion caps. There are a lot of people there to help, very good folks. Just taking reloading up a notch or two. The EPH 20 is for .22LRs but works for caps, and small pistol primers. Also BPCR. It is easy to do, I put it off way too long thinking it would be hard to do, that was stupid, it is not, requires a couple of things not expensive. Lots of instruction videos, also go to the MEWE social page and join the group Primer Reloading. No cost.
https://rumble.com/vtjboi-reloading-...p-start-3.html
tons of information here by some very knowledgeable people.
https://www.aardvarkreloading.com/