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Posted: 4/8/2002 3:56:08 PM EDT
I am modeling the barrel and chamber of an AR-15 for some stress/thermo analysis in one of my college classes. I need the dimensions for one so I can model it accurately. Specifically, I am looking for the 5.56 chamber dimensions. If anyone has a drawing they can email/post or a link to an online source, I would be very appreciative.
Link Posted: 4/8/2002 8:28:17 PM EDT
Forgot to mention, I need it rather soon, by Wednesday if possible.
Link Posted: 4/8/2002 8:46:01 PM EDT
check out SAAMI's website www.saami.org.

they might have something.
Link Posted: 4/8/2002 9:27:21 PM EDT
I checked, with no luck. Thanks, though.

Link Posted: 4/9/2002 12:39:53 PM EDT
[Last Edit: 4/9/2002 12:51:17 PM EDT by twr6444]
Link Posted: 4/9/2002 1:03:18 PM EDT
That helps a lot! The only thing it was missing was length dimensions, but I might be able to fudge those by measuring a 5.56 cartridge. Thanks.
Link Posted: 4/9/2002 1:39:32 PM EDT
Ammunition 5.56 x 45 - SS109
Link Posted: 4/9/2002 2:01:59 PM EDT
I meant the lengths of the individual parts of the cartridge, not just the overall length (45mm).
Link Posted: 4/9/2002 2:27:09 PM EDT
You need to find a reloading manual - borrow one, or get one at a library. You might be able to ind a manual a gunshop that you can copy the dimensions from.

Idealizing a cow as a sphere ...
Link Posted: 4/9/2002 8:17:20 PM EDT

Originally Posted By AeroE:
Idealizing a cow as a sphere ...

oh, god, what horrible memories that brings back. my environmental chem prof told us to figure the cow as five (or six if you want to do the head separately) cylinders: one for the body, and four for each appendage. yuck. i hated that class.
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