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Joined: Oct 2008
Posts: 190
Sidelock
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Sidelock
Joined: Oct 2008
Posts: 190 |
I think the recommended paper is a high quality cotton rag bond. I would imagine that lower quality paper could have abrasive dirt mixed in its' fibers. Also, the exposed ring of lubed paper on the loaded cartridge could collect dirt which would act as a lapping compound. For years, I used a wad of hornets nest material over my black powder in my flintlock rifle after I'd read that it would slightly increase velocity and protect the patch from burning. After a decade of that, I believe it may have contributed to a fairly sudden (and premature) loss of accuracy. I think mud is the binder for the hornet nest paper and it would of course be abrasive. You could actually feel that the sharp edges of the lands was gone in comparison to the replacement barrel. This was not just ramrod wear as shortening and recrowning did not help at all. Even so, this probably took upwards of a thousand shots to seriously affect accuracy. I have several friends who shoot muzzle-loading "slug guns" that require the use of lubicated paper "cross patches". These guys usually figure that a barrel, so loaded, has a maximum accuracy life of approximately 500 shots. The offender is the clay that is used to "size" the paper in the patches.
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Joined: Jul 2004
Posts: 287
Sidelock
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Sidelock
Joined: Jul 2004
Posts: 287 |
There was a very detailed article here on Paper patched bulletts recently, that basically told the story from go to woah, can anyone give me alink to it
Regards
Hotrack
Life is too short to drink cheap wine
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Joined: Oct 2008
Posts: 190
Sidelock
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Sidelock
Joined: Oct 2008
Posts: 190 |
I think that I may have "miss-spoke", a bit. The clay sizing in patch paper is, indeed, abrasive. But, then, so is just paper and cloth. Muzzle loading round ball target shooters very often find that their barrels will "shoot slick", after a fair amount of shooting. Then, larger balls and thinner patches, and/or patch lubes with less lubricity are often employed to re-establish optimal patch/bore friction levels.
I am not aware of anyone who has manipulated variables such as bullet size, bullet temper, paper patch thickness or composition, and/or patch lube in order to compensate for the inevitable bore wear that results from the use of paper patched bullets. For all I know, somebody has, however. Experimentation along such lines might be interesting.
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Joined: Jan 2004
Posts: 6,755 Likes: 437
Sidelock
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Sidelock
Joined: Jan 2004
Posts: 6,755 Likes: 437 |
Dingel, I shoot many thousands of paper patched rounds per year. They are the only kind of bullet I use in centerfire rifles and they are the predominant bullet I use in muzzleloaders. I find no evidence of wear after years and years of shooting. It is a nonissue so far as I'm concerned, and I am pretty particular as most of those rounds are for competitions at ranges from 200-1000 yds depending on the game.
Some folks have tried to measure bore wear, but everyone to date has gotten old and died or bored and given up before wear could be detected. I can still see the reamer scratches in the throat of my most often used rifle. That barrel is right around 15 yrs old and I cannot even guess at how many round have gone down range from her.
Brent
_________ BrentD, (Professor - just for Stan)
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Joined: May 2006
Posts: 625 Likes: 1
Sidelock
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Sidelock
Joined: May 2006
Posts: 625 Likes: 1 |
Just a personal opinion, but I would have thought that the white hot and high pressure gasses resulting from the burning of the powder charge would have been more destructive to the barrel of any rifle than the paper patch bullets that were fired in it.
Harry
Biology is the only science where multiplication can be achieved by division.
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