rich_morris Posted April 21, 2013 Report Share Posted April 21, 2013 Hi All, I have just picked up a replacement Browning 725 under warranty. I notice after I got it home that it comes with a certificate stating the bore diameters. 1 barrels is 18.27, the other is 18.70 according to the paperwork from the proof house (I guess) Both barrels are stamped 18.7. Having paid for back bored vector pro barrels, I was kind of expecting an open bore of 18.7. Can anybody tell me what 'normal' barrel diameter range is please? Is 18.27 a bit on the tight side? Should I trust the paperwork, or the stampings? Will I notice any difference?!?! Thanks Rich Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted April 21, 2013 Report Share Posted April 21, 2013 18.4mm would have been the average barrel dimension 20 plus years ago and nowadays 18.7mm or 18.8mm would be regarded as overbored. Quote Link to comment Share on other sites More sharing options...
rich_morris Posted April 21, 2013 Author Report Share Posted April 21, 2013 So 18.27 would be 'tight' then? Especially considering the barrels are supposed to be over-bored/back-bored! 18.4mm would have been the average barrel dimension 20 plus years ago and nowadays 18.7mm or 18.8mm would be regarded as overbored. Quote Link to comment Share on other sites More sharing options...
bornfree Posted April 21, 2013 Report Share Posted April 21, 2013 I think its a type error its probably 18.72. 18.27 would very tight. Quote Link to comment Share on other sites More sharing options...
TIGHTCHOKE Posted April 22, 2013 Report Share Posted April 22, 2013 The best way to solve this would be to take it and get it measured! Quote Link to comment Share on other sites More sharing options...
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