OK, here's my preliminary review of the Polish Capper:
After I unwrapped it I looked it over and was pleased with the overall manufacture of the product. Only one sharp edge on the lower portion of the lid, by the head. I'm sure that just a quick pass with a stone will correct that.
I used it first on a Colt 1851 and it worked perfectly. Easy on, easy out with the caps seated nicely. I use Slik-X nipples and they seem to be the perfect size. There was enough clearance on both sides of the head to for easy operation.
Not quite the same experience with the Ruger Old Army, the capping head is just a bit too wide, (I haven't taken a micrometer to it yet.) But the sides of the capping head were gouged by the nipple opening of the ROA's. I believe if I narrow the head a little, this will fix the problem. More about that in the future.
Middling success with Pietta New Armies. I was using stock nipples, and often the caps would not stay on the nipples, but stayed in the capper head. I'm going to switch out to Slik-X nipples and I'm confident that will fix the issue.
Be sure to watch the Polish Capper Videos, they do not function the same as the Ted Cash Snail Cappers or the Straight Line Cappers. This is a different product, and operates a little differently. I managed to send a fair amount of caps to the floor until I got the hang of it.
As I said, this is very preliminary, I've only had the capper for two hours, and I plan on spending much more time with it, and ever-so-slightly modifying it for easier use with the ROA. Meantime, I'm all set to go with any of the Colt-type percussion pistols. I'm looking forward to giving it a run at a match, Saturday!
~Duc~