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July 24, 2012, 11:28 AM | #1 |
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Magnum Research Barrel Polish
A friend of mine was showing off his Magnum Research 9mm. He was so proud of how clean and polished the inside of the barrel was. The inside of the barrel looked just as blued as the outside. The lands and grooves were so polished you barley could tell they were there at one time. I am totally not familiar with Magnum Research. The 9mm appears to be a 1911 clone, more or less. I told my friend that his barrel is really unsafe and he should have it replaced. He insists that it is the "great quality" of Magnum Research as to why the barrel is that way.
I told him that the lands and grooves should be cut at a 90 degree angle, he insists that I am wrong. I told him that he was "sold" on a worn out gun. Unless, barrel lands and grooves are not supposed to be cut at 90 degrees and instead a very rounded bump? Looks to me like someone had too much fun with a bore brush. I will see if I can get some picts. |
July 24, 2012, 11:44 AM | #2 |
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are you sure its not poly rifling? We need a bit more detail and the actual model of gun.
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July 24, 2012, 11:57 AM | #3 | |
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Quote:
Cheers, C
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July 24, 2012, 12:02 PM | #4 |
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Sorry, it is the magnum research baby eagle II, 9mm . This may be my first encounter with polygonal rifling. What are the benefits?
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July 24, 2012, 12:17 PM | #5 |
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Plenty of info on the net. H&K, CZ, Glock... and of course Magnum Research have been using polygonal rifling for years.
Here's a brief overview of the subject on the USCCA website. Cheers, C
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July 24, 2012, 05:10 PM | #6 |
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I've had several guns with polygonal barrels. They do look different, but most of them had visible grooves that let me know the barrel had "rifling."
A while back I picked up my first CZ-82, and when I examined the barrel thought something was wrong -- as it looked almost like a shotgun barrel: there was no rifling to be seen. Turns out, it was fine, and shot very well. Some of the polygonal barrels just don't LOOK RIGHT, but most of them shoot quite well. |
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