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Ultra Mag boxes

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Unread 04-02-2006, 04:49 PM
Junior Member
Join Date: Mar 2004
Location: parkland, SK
Posts: 22
Ultra Mag boxes

Can somebody give me the lowdown on longer mag boxes? I'm specifically interest in 338 UM in a remington action. What is involved? Where can you get one? And what would be the new Max. over all lenght. [img]/ubbthreads/images/graemlins/confused.gif[/img] Thanks again
For what it is worth, Eh!
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Unread 04-02-2006, 09:09 PM
Bronze Member
Join Date: Jan 2006
Posts: 33
Re: Ultra Mag boxes

Longer mag boxes can be purchased at Brownells, they are made by Wyatt Oudoors. You have 2 choices for the 338 RUM, one of the boxes is .110 inches longer that factory or there is a center feed model that is .300 inches longer. The action has to be milled out at the rear of the mag port and the floor plate on BDl models must be notched. In my experience, the shorter box is long enough to accommodate most bullets for the 338 RUM, if the 300 RUM (which is slightly longer) is being used, I would reccomend the longer box. Installing the shorter box can probably be done with a dremel, however, the longer box needs to be installed using a milling machine. Hope this helps.
Todd Bettin
Bettin Custom Guns
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