Was doing a search on building a rifle rack and came up with these designs on Google. You can download the plans for them as well.
http://sketchup.google.com/3dwarehouse/cldetails?mid=e6f2afe55e03f63a2188b28c690bd7fb&ct=mdcc&start=0
http://sketchup.google.com/3dwarehouse/cldetails?mid=e6f2afe55e03f63a2188b28c690bd7fb&ct=mdcc&start=0
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