primers and caps.. interesting info

[cayugad]

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I thought this was very informative so I want to pass it along.

On page 83 of DaveEhrig's book "Muzzleloading for Deer & Turkey", he lists some information on percussion caps and primers.

#11 standard cap - 6.53 cc of gas at 3,024 degrees F when fired.

#11 magnum cap - 7.59 cc of gas at 3,717 degrees F when fired.

U.S. #2 musket cap - 14.36 cc of gas at 3,717 degrees F when fired.

#209 shotgun primer - 21.98 cc of gas at 3,024 degrees F when fired.

#200 rifle primer - 11.68 cc of gas at 3,024 degrees F when fired.


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Reese, a member of the Modern Muzzleloader Forum was kind enough to share this information he came across from a book he read. I find this very interesting as for a long time I have claimed that a #11 magnum cap is as hot as a musket cap. Well technically it is. It's the volume of gas that hits the powder charge that must make the difference.

The shotgun primer was a real surprise. Not as hot as a musket cap but almost double the volume of gas. So again, the heat is there, and the quanity of heat is what is making this the better ignition system.

I just thought you all might find this interesting.. thanks again to Reese...

[TNHagies]

Very interesting! Thanks for that. I too always assumed that the musket was hotter than a #11. I also assumed that it was temp that made the biggest difference. w/less than 700 degrees difference, it would appear that the amount of gas is the deciding factor. Very eye opening.

[Semisane]

Good stuff Cayugad, thanks for posting.

[goatbrother]

I would like to see the readout on the RWS 1075+ caps.

[lemoyne]

Very good, I have often thought that a Magnum Large rifle primer would actually be the best source of ignition as it is a lot hotter than a regular rifle primer. Lee

[cayugad]

goatbrother.. I know what you mean. When all other caps fail, the RWS will set the rifle off. How or why I do not know, but I got turned on to them a long time ago by an old (now passed away) muzzle loading friend. He did a lot of turkey shoots, and Rendezvous shoots in Wisconsin. He always shot RWS and actually refused to shoot anything but them. He told me that they RWS will not fail me. Other then they are tight to load on one of my White rifles, they are all I use "when I can find them."

[gleason.chapman]

Along the same lines, this is thechrony measure fps of a sabot without a bullet shot out of a MLer with different primers (same sabot and no powder load every time).Reason, it takes a lot moreheat and volume to ignite smokeless than BP or BP subs. This will make a difference with Blackhorn, which is closer to Smokeless than it is to BP (Goex, Swiss, Elephant).

Most folks that shoot smokeless use Federal or Winchester 209a, nobody uses the Remington Cleanbore or other Lite primers, I recommend they don't with Blackhorn to get good ignition.
Chap

[goatbrother]

Cayugad, I got to pop a lot of caps last fall when working on my pivot hammer conversion for my White. I had to test the thing to see if it would pop a cap. So I started with the cheap stuff first, remingtons then cci because I didn't want to use up all of the RWS I was saving for hunting. But in the end I ended up using all the cheap stuff and had to use the RWS. First thing I noticed with the RWS, poping them off in the house, that the RWS were much louder than the others, and the caps would disintegrate (RWS) where the others would go pop but still be intact. Try it sometime, get some different caps and pop them of in the house or garage, it will be appearent which ones are more potent.

[cayugad]

That Triple Se7en Winchester primer is really light compared to the others... very interesting as I shoot Winchester W209 for most or the Remington Kleenbore when I can get them on sale.

[bronko22000]

I would have to agree. The volume of gas must be the reason for the so called "hotter" ignition. I'm glad I got some #11 mag caps for the pyro RS. The 700* hotter and almost 14% more gas should definately give better ignition.