There are 5 caps in the #10 and #11 range commonly available today. The RWS 1075 seems to be impossible to find these days and appears to have been "replaced" by the RWS 1075 Plus in availability. The "Plus" cap is actually a "magnum" cap but will work for our purposes. In addition to the five is an entry supplied by Hellgate for an RWS #55 cap, these are also called RWS 1055 caps and I will add to the data sets when I locate a package of them I squirreled away somewhere.
I have now measured:
120 Remington #10 Caps from four distinct manufacturing lots, 20 caps from each package (two lots provided 2 packages)
120 Remington #11 Caps from five distinct manufacturing lots, 20 caps from each package (two lots provided 2 packages)
120 CCI #10 Caps from Three distinct manufacturing lots, 20 caps from each package (3 packages from one lot, 2 from another and 1 from a final lot)
120 CCI #11 Caps from five distinct manufacturing lots, 20 caps from each package (2 packages from 2 lots, and 1 from two other lots)
87 RWS 1075 Caps from one lot
79 RWS 1075Plus Caps from one lot
This is an image from models of the five caps in question, note how all of the caps are arranged to set the height as it would be relative to sitting on the cone face, this will give you some idea of the differences in priming compound thickness between the caps.
These side by side comparisons of the cross sectioned models will help you understand why some caps appear to be "larger" than others on the exterior, but are in fact nearly the same size internally or actually a bit smaller than another cap that might have an overall shorter outer height.
Construction differences are readily apparent between the three manufacturers. The corrugated features show up as a ribs on the inside of the CCI caps, a ghost image of the corrugation shows through on the Remington caps, but are not measurable. The Remington caps have the four "petals" left on them which is part of the forming process. Actually all three styles of caps have these petals at a point in their forming process. CCI and RWS trim the bottom of the skirt and finish them differently. RWS applies an internal chamfer to the skirt to facilitate loading and CCI breaks the outer edge slightly. Only Remington leaves the skirt as formed, this "as formed" condition often manifests itself with petals of slightly different length on the same cap (look at the photo of the Remington #10 cap as an example of this).
Photos in subsequent posts will show the internal features and differences described above.
The external heights are as follows:The #10 CapsThe #11 Caps
(note the RWS 1075s are categorized as #11 caps because they fit the same cones as caps marked as #11)