1911 mag angle

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Tommygun7

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I just bought a Norinco 1911A1 sport and I have a question about the magazine angle. I read about a 1911 build project where the guy said that the frame he got was 17 degrees and that was wrong and it was supposed to be 14 degrees. This got me curious so I started searching. I found blueprints on the internet that show the angle as 17 degrees but then on the same page there is a different view that shows it at 14 degrees. Which one is right, or am I missing something. I checked the mag angle on mine and it is 17 degrees. There is also a good a article about different mags and how they feed. Links to both below.

http://how-i-did-it.org/1911-project/
http://how-i-did-it.org/magazines/
 
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The first link isn't working for me but the second was a good read and I thank you for that.

And while I have no desire to be as vitriolic as Westicle :rolleyes: I'd have to suggest that you're obsessing with something that may not be an issue at all in light of the article and feed differences shown in the different magazines. As that article shows there's a lot of factors that control the feed and how widely different designs can all work just fine.

Perhaps just cycle your own 1911 the same as shown and study how the round behaves. If there's no issue with chambering or failing to eject then don't worry about it.

I know it's not an easy thing to do when you've got a new toy and want to know all the intricacies of it in detail but sometimes it's best to not tinker with a working system or you'll "improve" it into being nonoperational... :D
 
It's 17 degrees, but unless you are engineering a new magazine design for manufacture, it really doesn't matter what the angle is so long as it works. Magazine tuning is usually done by "eye," not with a protractor.
 
Ok, I fixed the link so it should work. The part I was talking about is on the FED UP page close to the bottom. I was not talking about the mag but the magwell in the frame. Sorry about the confusion. When I buy a gun I like to know everything about it. How it is supposed to work and any problems to look for. I'm a millwright so I can't help it, its in my nature. The first thing I do when I get a new gun is take it apart to see how it works. I have a lot of experience with guns so please spare me the negative comments. I just thought someone with a lot of 1911 knowledge might know. I'm just curious. This is the blueprint I was talking about.

http://www.flickr.com/photos/77356801@N00/1387383221/sizes/l/
 
Wow, very interesting. Shows how much work really goes into the 1911, and how much precision. That drawing is dated 1939, it may have been that the mag angle (vs. the grip angle) was changed somewhat over the years, to try to improve the feeding with marginal magazines. (Just a guess)
 
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My monitor must be a little off as I can't read the numbers on this diagram hardly at all, even when I enlarge. But Jerry Kuhnhausen's book, "The .45 automatic: a Shop Manual" has everything laid out very clearly. For someone with your background, this would be an ideal read. http://w ww.brownells.com/aspx/NS/store/productdetail.aspx?p=13805
 
You want both of these books.

The Colt .45 Automatic: A Shop Manual, Vol 1.
colt45.gif


The U.S. M1911/M1911A1 Pistols and Commercial M1911 Type Pistols- A Shop Manual.
m1911.gif


The Volume II manual's pages 177-182 and figures 164-170 are pertinent.
 
Here is a much clearer high resolution blueprint I found. Look for "M1911 frame blueprint". There is a lot of other neat stuff on that page as well. The 14 degree dimension is missing from this one, so 17 degrees must be right. Thanks for the info on the books, I think I will have to get one for sure.:D

http://www.m1911.org/technic.htm
 
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