Different caps "now",,,

[ugly old guy]

Usually, the #10 and #11 caps are the same diameter. The difference is, the #10 caps are a little longer than the #11 caps. That longer length puts the bottom of the cap further down on the nipple and because the nipple is tapered, the bottom of the cap ends up at a larger diameter on the nipple. That makes it a tight fit on a nipple that would seem to be too loose when a #11 cap is installed.

Incorrect. Number 11's are a couple thousandth's larger diameter.

I have some 10's and 11's, both Remington brand.
The 11's are a hair taller.

10's were originally intended for a revolver, which (allegedly) needed a slightly shorter cap.
(my reproduction "Colt" "1851 Navy" and "1860 Army" and "Remington 1858 New Army" all functioned just fine with number 11's.)

 

[dlidster]

Incorrect. Number 11's are a couple thousandth's larger diameter.

I have some 10's and 11's, both Remington brand.
The 11's are a hair taller.

10's were originally intended for a revolver, which (allegedly) needed a slightly shorter cap.
(my reproduction "Colt" "1851 Navy" and "1860 Army" and "Remington 1858 New Army" all functioned just fine with number 11's.)

There's a link to a complete article regarding cap dimensions somewhere on this forum, but I can't locate it right now. A summary of this discussion, though, is pretty well summarized in this chart.

 

[Grenadier1758]

Here's the link to article on percussion caps. Wish it had the CCI Magnum, but it would be the same as the CCI #11 with a bit mor priming compound.

http://guntoters.com/blog/wp-content/uploads/2018/10/Percussion-Caps-and-Nipples2.pdf

 

[Sparkitoff]

I have a revolver that will only work with Remington #11. Says so in the instruction manual and it has proven true. The CCI's whether 10 or 11 size are too long for the cylinder to rotate.

 

[wb78963]

Uhmm, yes it will. If you shoot competition with muskets and want your score to drop, switch from RWS/Schutzen to CCI reenactor caps.

CCI reinactor caps are trash they are OK for clearing the fire path but will not work in my paper cartridge Sharps. RWS musket caps, on the other hand, work like a charm.
My experience with RWS 1075 caps is they don't work and I have only 3.5K of them on the shelf.
Anyone in central Texas likes them we can make a deal.