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Old 30th December 2013, 05:31 PM
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rich rich is offline
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Join Date: Nov 2008
Location: Shebbear, N Devon
Posts: 1,644

Hard to be definite about these things, but the S400 has a substantial barrel band only inches from the muzzle, and the band is lined with a thin O ring so the barrel has little room to move other than in a polar axial direction. If it had been a floating barrel I'd be more inclined to think that harmonics were playing a part.

Having said that, the S400 does have what is probably the Carlsberg of barrels, in terms of thin-ness.....
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