Cleaning Patch Sucker

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I've been working on an old CVA Pennsylvania rifle with a 40" barrel for resale. I took it to the range and every time I run a cleaning patch down, it sucks it back in as the jag is exiting the muzzle. The hammer is at half-cock and the nipple is brand new, so the breech is not blocked. I've seen this happen once in a while on other guns. It's almost 100% on this one. It's a pain because then I have to grab a patch puller and swap it with the jag. I don't want the next owner to have to deal with this problem.

Does anybody have an idea why this happens?

Thanks!

Walt
 
It sounds like the flash channel is blocked by fouling, creating a vacuum. That sucks the cleaning patch back into the barrel.

That's what I thought. At first, I thought maybe I had the hammer on the nipple. Everything is clean as far as I can tell. Of course, it doesn't do it when the nipple is removed, and the breech is in a bucket of hot soapy water. The nipple is an MSM Spitfire Magnum. I have them on all my caplocks and have never had them do this before.

Thanks!

Walt
 
Hmm... "Patch Sucker" Sounds like a good nickname for someone--not me, of course..... ;)

the flashhole in a nipple is pretty tiny, and may not be drawing in air as fast as you are pulling out the patch. Wait a second or two before pulling the jag out of the muzzle.
 
Pulling the rod out slowly is what came to my mind as well. I've occasionally had vacuums that pulled and compressed air buildup that pushed stuff right back up. If I slowed down all that stopped.
 
I've been working on an old CVA Pennsylvania rifle with a 40" barrel for resale. I took it to the range and every time I run a cleaning patch down, it sucks it back in as the jag is exiting the muzzle. The hammer is at half-cock and the nipple is brand new, so the breech is not blocked. I've seen this happen once in a while on other guns. It's almost 100% on this one. It's a pain because then I have to grab a patch puller and swap it with the jag. I don't want the next owner to have to deal with this problem.

Does anybody have an idea why this happens?

Thanks!

Walt
Swap nipples with one of your other rifles and you will know for sure whether it is the nipple or not?
 
It's not the rod, just the patch. What bothers me is water gets on top of the patch and squirts all over the basement when I pull it. Made me slow down a lot.
 
It's not the rod, just the patch. What bothers me is water gets on top of the patch and squirts all over the basement when I pull it. Made me slow down a lot.

That's normal and one of the reasons using a bucket, etc. is great in that it sucks solution up into the barrel to help clean it.

I know what you mean about liquid going everywhere. Sometimes I have to wrap a towel around the muzzle so that doesn't happen.

Walt
 
I pull the rod up to just the muzzle when cleaning and force the water back out through the nipple hole with the nipple out. It does a good job of cleaning the breech area.
 
Have you tried a tighter patch or cutting your own slightly longer patch that grips the jag better. For thorough cleaning one should remove the nipple anyway, or are you speaking of just running a patch through ever so many shots at the range. I would try another nipple if this were the case.
 
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