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Bushmaster Varminter

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Unread 09-06-2007, 11:45 PM
Silver Member
Join Date: Jan 2007
Location: Billings, MT
Posts: 210
Bushmaster Varminter

Can you use the stock Varminter barrel and have it chambered in .223 AI, and what would the cost be?
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Unread 09-07-2007, 11:33 PM
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Join Date: Mar 2007
Location: MN
Posts: 1,219
I'm no expert at this but I believe that AI is simply straightning the case and increasing the shoulder angle so there should be no problem in using a factory barrel. However, if you are going to spend the cash on AI, you might think about purchasing a better barrel and having it chambered for the AI.

one other thing, if you are talking about a semi auto rifle, you should ask some people if they work w/ AI rounds without further adjustment. The straight case could lead to feeding problems. DPMS does offer a 300 SAUM in their AR rifles though.
I used to re-load but now I "hand-load".
-- Well, at least I try --
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Unread 09-11-2007, 06:49 PM
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Join Date: Jul 2002
Posts: 2,855
The short answer is NO , you will end up with a chamber with excessive headspace , kinda like a short Gibbs chamber. Now this can be done if you single load your ammo and use specail loads to fireform you cases but I would recomend against it.

The the true Ackley Improved desgine is slightly shorter at the neck shoulder junction than the standard case , this is why some guys get worried when they first shoot factory ammo in the properly cut Ai chamber because the bolt takes a little pressure to close.
Si Vis Pacem Parabellum
Molon Labe
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