Sir, I bought my Pietta second hand, I think they were the factory nipples. No. 11 primer caps fit on some of these original nipples. Yes, I think that they may have been dry fired and this was part of the problem. Then, I bought from Track-of-the-Wolf the PIR-I Nipples. Their description specified for Pietta Colt and for Nr. 11 CCI Primers. When I got these replacements, No. 11 Winchester Magnum primers did not fit either. Just like some of the nipples that were on the Pietta when I bought it. The problem was that the Primer Caps would not seat until stuck one time by the hammer, the second time they would fire. So, I filed down these Track-of-the-Wolf nipples. Four I filed just right and they seat correctly and fire the first time. One I filed too much and the primer slips off. And one I did not file enough and has to be hit twice by the hammer. If No. 11 is too tight, would Nr. 10 be bigger or would Nr. 10 be smaller still? Thank you.
Thank you "Grenadier 1758." I understand "Height" but not "Cap-Face-above-Cone." I don't think "Cap-Face-above-Cone" is diameter. For example I measured my Winchester No. 11 Caps: I get Height of .166", that matches the chart general measurements. I measured the diameter of the caps and get .178" (outside diameter). If as you say, "#10 caps are slightly smaller" and I assume you mean height and diameter; than for sure they would not fit the nipples I have had experience with. Nevertheless, thank you very much for the help. I get the impression that this is a problem. Track-of-the-Wolf got defensive when I called them to inquire about the fit problem. So, this fascinates me and will take some more research.
The only times I've had #11's not fit have been when the hammer had substantial strikes on the face of the nipples and it flared the ends. Well, I'm gonna say but... When I had a percussion revolver that had previously been used as a stage prop, it had seen a whole bunch of dry firing and had the nipples faces bradded. So I replaced the nipples. It was a very nice Euroarms .36 Remington and sadly was lost to a thief who stole it from the smith I had doing work with it (to convert it to .40 bore). What can you say about someone who steals and isn't even a crack head? So, any way, some revolvers do smash the ends of their nipples. There's ways to fix that. For me it never has been much of a problem. I use #11's for everything, never having a reason to buy #10's.
Thank you for the clarification. This helps. Now I understand, and I measured the I.D.; The I.D. of the Winchester No. 11 caps I have is .165". Also, thanks for explaining Cap-Face-Above-Cone.
In the meantime, something as occurred to me. What I have been talking about is that the caps I have tried, do not have the correct I.D., the height is OK, but they are too tight to go down all the way. Once I filed down the sides of the nipples/cones, the caps seats down properly. The height is OK.
What I had hoped for in my discussion with Track of the Wolf, would have been an answer like this: "yes, we are aware that sometimes primers don't fit, we offer four different kinds for your pistol, they are PIR-I, PIR-LI, PIR-LS and PIR-S. If PIR-I does not fit let me recommend another (fill in the blank)." or "try the larger primer with and I.D. of .166 instead of what your are using."
This is the kind of exchange you and I are having. So Thank you very much indeed. George
I've had CCIs not fit but the same size Remington fit fine. I think it was #10s of both. The CCI would require two strikes of the hammer even when I tried to seat them well. The Remington's works fine. I use both types. This was on a Pietta 1858 revolver even after I bought new nipples.
Is this common?...Yes, but I`m very picky about my tuning. No problem peening nipples to a larger size cap or filing to a smaller size. Have had to do one or the other on all my cappers nipples. Best to stick with the same brand and size afterward...c
Buy a couple tins of different caps and see what fits and works best with your nipple. #10 or #11 effectively means nothing as their is no industry standard for percussion cap sizes. You just have to experiment a little.