Some caps don't fire the first time...

RWS 1075 caps are #11.
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??
Which No. 11, CCI or Remington?
CapSizes.jpg

It's neither; it's just an RWS 1075.
 
That I dunno. All the #10's I've used have been Remington and RWS is bigger than those. All the #11's I've used have been CCI and they "seem" to be about the same size. Your chart has Remington 10's bigger than CCI 11's and that is not the case.
 
Tried out the RWS caps yesterday and it was a complete bust...way too big. I suppose I'm not going to take stop-gap measures and just replace my nipples.

I got the gun sighted in pretty well as well...5 of 6 shots on a tin can at 45'. Not bad for only having 60 rounds through this Pietta 1860. In fact, I'm having so much fun with this whole black powder thing that I just went ahead and bought a Cimarron 2nd model Dragoon a couple days ago! :D

And a parting shot coming up the ridge near my shooting location...

IMAG0152-1.jpg
 
Your chart has Remington 10's bigger than CCI 11's and that is not the case.
Click to expand...
It is for all the caps in my inventory. And so far, 4 other people have verified the relative sizes (although not the exact measurements) in that chart.

Those numbers are averages, of course, of many measurements made from different batches of caps. The opening diameter numbers have significant error terms ( +/- 0.004") because of the method of measurement, but the heights are good to 3 places.
 
All I know is I've never seen a 10 be smaller than an 11. Mine that take 10's have to have 11's pinch fit.:confused:
 
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