#11 vs #10 percussion caps

[Cypress Sam, SASS #10915]

Is there any reason that #11 caps couldn’t be swaged down to #10 size?

[Sedalia Dave]

@Prairie Dawg, SASS #50329 has a white paper on the differences between the different caps. 
 

[Cypress Sam, SASS #10915]

5 minutes ago, Sedalia Dave said:

@Prairie Dawg, SASS #50329 has a white paper on the differences between the different caps. 
 

What is a “white paper”?  Assuming it’s a write up on what the differences are, how can I access it?

[Warden Callaway]

46 minutes ago, Cypress Sam, SASS #10915 said:

Is there any reason that #11 caps couldn’t be swaged down to #10 size?

 

 

It works.  I used a drill bit that measured .154. Drilled the wire tool out. Pinch cap and turn 90 and pinched again to remove slight ridge formed from first pinch. They run through the Ted Cash capper fine. Fit tightly on Pietta nipples.  Shot maybe a 100 without issues. 

[Sedalia Dave]

1 hour ago, Cypress Sam, SASS #10915 said:

What is a “white paper”?  Assuming it’s a write up on what the differences are, how can I access it?

 Not at home so I can’t access it but PD had a pdf article another SASS shooter did several years ago detailing the dimensions of each brand and style of caps. 

[PaleWolf Brunelle, #2495L]

8 minutes ago, Sedalia Dave said:

 Not at home so I can’t access it but PD had a pdf article another SASS shooter did several years ago detailing the dimensions of each brand and style of caps. 

 

I found this in my reference files from 2011

 

Percussion Caps and Nipples

[Warden Callaway]

Here is a video where a guy is "bumping up" Treso nipples to get a tight fit with #11 caps.

 

 

[Nickel City Dude]

I believe that Ampco nipples are made out of Barilium.  Please excuse my spelling.  I was told that this substance was a very dangerous metal and should not be filed or drilled.

[Sedalia Dave]

39 minutes ago, Nickel City Dude said:

I believe that Ampco nipples are made out of Barilium.  Please excuse my spelling.  I was told that this substance was a very dangerous metal and should not be filed or drilled.

AMPCO is a safe replacement for beryllium copper in many uses

[Clueless Bob]

I've been running Remington #11 caps on Slix nipples for over a year without any issues.  Never had a cap fall off either.

[irish ike, SASS #43615]

Pale Wolf's attachment shows what I remembered. Remington #10 & 11's the difference is length not diameter. Thats why the 10's stay on better, they grab more of the nipple.

[Cypress Sam, SASS #10915]

Thanks everyone for your input.  I learned a lot about percussion caps and nipples.  Turns out what I was “assuming” was completely wrong.  I may even break out the 1860 Armies and give them another chance!