Corrosive caps?

Did you ask the all knowing about the brand name.
Google the brand name.

Do they brass cups? A dull gray or brown surface to the prime, no foil or paper cover? They are chlorate primed ,power full and corrosive. Once fired they tend to stick real hard on the nipple.I had to use pliers to get them off. All from Italy usually CVA or DGW marked. Clean like you are using pyrodex.You will be ok if you are doing that right. Many of us making our own using prime all or toy pistol caps are in the same boat.
Black Jack Shellac

Pafts826 said:

Does anyone know of any corrosive caps and what brand they are. I have some from the 1970’s and don’t recall where they came from. Several tins are made in Italy.

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I believe that these brass CVA caps with black primer material and Fiocchi caps are corrosive [if they're also brass].
I agree with Black Jack Shellac that Fiocchi's were also sold with a Dixie Gun Works label,, and possibly in DGW blue and/or red plastic tins.
They were also sold in the UK labeled as "Harness caps by Fratelli Summonte."
But not all DGW caps were the same.

Yes have some in a "Dixie" red plastic container. Good caps and they stay on after firing and --- NO CAP JAMS!

All caps and muzzle loading propellants should be considered corrosive. Clean the firearm promptly and you can sleep soundly.

Those CVA caps were terrible. I had some in the late 70's, kinds wish I would have saved the boxes.

AtiqueSledMan.

arcticap said:

I believe that these brass CVA caps with black primer material and Fiocchi caps are corrosive [if they're also brass].
I agree with Black Jack Shellac that Fiocchi's were also sold with a Dixie Gun Works label,, and possibly in DGW blue and/or red plastic tins.
They were also sold in the UK labeled as "Harness caps by Fratelli Summonte."
But not all DGW caps were the same.

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I had a friend buy a couple tins of these for me up in Montana from an old timer. I wanted them for backup supply, but now I can’t bring myself to shoot them! Way too rare and cool.

Since black powder and all of its substitutes contain compounds, or generate residues, that are hygroscopic, and therefore are prone to create corrosion, the corrosive properties of percussion caps are not really relevant to firearms maintenance. A firearm utilizing black powder or its substitutes should be cleaned with hot water and a little dish soap as soon as possible after use. Doing so not only removes any corrosive salts or hygroscopic residue generated by black powder or its substitutes but any corrosive salts or hygroscopic residue from percussion caps. Moose milk or Ballistol probably do all that is necessary to neutralize the corrosive properties of post firing residue, so liberal application in place of a good clean with hot water and a little soap may allow postponing such cleaning for a bit, but probably not a good habit to get into.