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February 17, 2008, 08:40 PM | #1 |
Member
Join Date: June 30, 2005
Posts: 58
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New SIG 556 Rifling Imperfection
Hello all,
I just broke down my brand new SIG 556 to clean it out before heading to the range and I noticed that the rifling has a small scratch/imperfection in the rifling about 4 inches from the muzzle. The scratch is not very deep, but is this something I need to bring to the attention of SIG, or just nothing? I know the barrell will get hot, and thought that this could be a weak point in the barrell that could later cause problems although I know nothing about the engineering/design of barrells on semi-auto firearms. Thanks! DV |
February 17, 2008, 08:57 PM | #2 |
Junior member
Join Date: April 21, 2006
Location: New Orleans
Posts: 2,450
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Shoot it and see how it groups. If you get shotgun patterns, something is wrong. If it puts them in nice little clusters, don't sweat it. I have a few very ugly bores that work great and the imperfection may be polished away after some use anyway if it is not too deep.
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February 17, 2008, 10:33 PM | #3 |
Senior Member
Join Date: October 25, 2001
Location: Alabama
Posts: 18,540
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Where is this imperfection in relation to the gas port?
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February 17, 2008, 11:22 PM | #4 |
Member
Join Date: June 30, 2005
Posts: 58
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Well, I don't have it in front of me, but I guess that if the imperfection is in the right spot, it is probably just the gas port. Good thinking!
Thanks, DV |
February 17, 2008, 11:38 PM | #5 |
Junior member
Join Date: April 21, 2006
Location: New Orleans
Posts: 2,450
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Yeah, the gas-port will be something to watch out for.
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March 6, 2008, 03:55 PM | #6 |
Member
Join Date: November 29, 2004
Location: Minnesota, USA
Posts: 43
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Yep. That port bears watching all right. If it gets too big, the bullet will divert iself up into the gas port instead of out the muzzle and blow off your entire gas block. Very Bad JuJu.
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March 6, 2008, 04:19 PM | #7 |
Junior member
Join Date: November 25, 2002
Location: In my own little weird world in Anchorage, Alaska
Posts: 14,172
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Actually, there was a rifle with a removable gas block and a diverter...you took the gas block off and shoved the diverter in the barrel...the bullet would exit the gas port so you could shoot around corners....
Sort of like a krumlauf WildfantasylandAlaska ™ |
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