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Old 04-24-2013, 18:09   #24
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Join Date: Mar 2012
Posts: 17,068
Originally Posted by Bullman View Post
Oh, and I read an article on this. they had a device that had a number of insertable rifled tubes you could put in the barrel, let you fire different rounds , some pistol,some rifle. The bad part about that was that it was only about 7 inchs worth of barrel inside your 12 gauge tube, so I doubt you were getting a whole lot of benefit from a 308 fired from a 7 inch barrel.
With no manual barrel selection that idea loses some utility.

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