Today's percussion caps are as much to do with the problem as the cone, hammer & mainspring (of a PROPERLY manufactured revolver). Unfortunately that doesn't seem to drive better caps. Cap quality for the consumer is based mostly on luck. Whether intentional (cost cutting) or merely haste to make product (would the 2008 election have anything to do with
), the quality has been somewhat inconsistent (IMO). I've had more cap problems occur during one match than I'd had in the previous 10 years. This with the same pistols, no aftermarket parts.
I like my pistols to represent the real deal of the 1800's, so I use no special add-ons or tricks...except to increase hammer strength via the mainspring....and to substitute other factory nipples, sometimes making them more conforming to my standards for shape size, etc..
The bad news.....Cap manufacturers have at times made batches of caps that have less priming compound than the norm. I know this because I've collected data on all makes and sizes commonly available (& some not so common). I've exchanged numerous scolding emails with one company regarding the "light" priming mix in one batch - (I have a couple thousand from that batch). But, I put no noticeable dent in their attitude. A cap which is light on primer mix will be slightly harder to set off, and will have a bit less "oomph". This is when you get a "pop", but no "bang"....or an annoying hang-fire (fraction of a second). Old caps were waterproofed by using a shellac sealer and often a very thin foil (adhered with the shellac), to add durability...sort of a brand-marketing thing. But, I don't think modern caps are waterproofed..BTW, one would want to "up" the priming compound if adding a waterproofing sealer as the sealer would tend to "deter" the flame of the prime charge.
The good news.....caps have seemed a bit better than the "lows" I encountered a few years ago. Now, if we could just increase production....and get Forster to bring back their cap making kit. BTW, if you haven't done so already, leave the Forster folks a comment requesting they bring these back to market.
Speaking of old caps, I had opportunity to use up the contents of a dozen or so tins of very old caps, estimate 1870s to as late as 1930.
A local collector was selling the tins (Internet...Ebay ?) and did not want to bother with hazardous shipping and/or Ebay rules on such...anyway, I got the caps for free. All but a few went bang, certainly worked as well or better than new ones. This was before I got into measuring priming compound & collecting stats. The caps were all mixed together, so I didn't know brand or even size. I hand sorted according to approx size.
An odd mechanical problem with revolvers I've encountered once included a bad angle between the face of the nipple and the hammer. Literally allowing the fired cap to be blown between the hammer & frame - all the way into the works on nearly every shot.
It was obvious after I looked closely...makes me wonder effect if it is only visually "close enough" not to notice.
Trodding along....
Oh-well, what else can we do
Slim