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223 vs. 556 (Weatherby vanguard)

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Old 03-29-2013, 04:42 PM   #1
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Default 223 vs. 556 (Weatherby vanguard)

I have a Weatherby Vanguard in .223 caliber. As far as I know, I'm not supposed to use 5.56 ammo in it. But in looking at several web sites, it shows up as .223/5.56 . So now I'm confused. I never would have cared but with the ammo shortage 5.56 is more available. I know the barrel pressures are far greater with the 5.56 ammo. Don't worry, I'm not trying it until I get some good facts from you guys.....send them in please.
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Old 03-29-2013, 05:12 PM   #2
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Have you called Weatherby?

Weatherby Customer Service representatives are available to assist you Monday through Thursday 6:30 a.m. to 5:30 p.m. (PST) at (805) 227-2600.
When in doubt, the folks that made it should be able to clear things up.
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Old 03-29-2013, 05:36 PM   #3
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Originally Posted by Overkill0084 View Post
Have you called Weatherby?

When in doubt, the folks that made it should be able to clear things up.
+1. Check with the manufacturer. Some AR variants will shoot both but you almost have to buy (or have modified) a custom bolt action that will shoot both. I checked into getting a bolt action 5.56/.223 a couple of years ago with no luck. Here's the discussion if you're interested:

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Old 03-30-2013, 06:50 AM   #4
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from what i understand that if its chambered in 5.56 it shoots either. in a .223 you should not use 5.56 due to the increased pressures. a check with the man would be a wise decission.
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Old 03-30-2013, 11:16 AM   #5
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The Weatherby Vanguard is actually a Howa 1500 so use that for your research online. If the barrel is stamped .223 like my Howa 1500 in .223 is then you should not shoot 5.56 ammo from it. However these rifles are overbuilt and you likely would never experience an issue by doing so.
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Old 03-30-2013, 02:31 PM   #6
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More reference here
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