bellringer Posted June 11, 2014 Report Share Posted June 11, 2014 I am thinking of buying a nice browning B25, The proof markings are 18.4 (.7244) The bores measure .730 & .729 respectively . Are they still in proof? I have tried Google to find tables but without success. Does anyone know where I can obtain charts giving max wear dia on proof size? Your comments would be appreciated. Quote Link to comment Share on other sites More sharing options...
wymberley Posted June 11, 2014 Report Share Posted June 11, 2014 Yes. No. Enjoy. Quote Link to comment Share on other sites More sharing options...
webber Posted June 11, 2014 Report Share Posted June 11, 2014 I am thinking of buying a nice browning B25, The proof markings are 18.4 (.7244) The bores measure .730 & .729 respectively . Are they still in proof? I have tried Google to find tables but without success. Does anyone know where I can obtain charts giving max wear dia on proof size? Your comments would be appreciated. What have you measured the bores with and where have you measured them; ( I don't mean on the dining table for example). webber Quote Link to comment Share on other sites More sharing options...
HDAV Posted June 11, 2014 Report Share Posted June 11, 2014 Well if it is out of proof it can't be sold...... Not as a gun at least. Quote Link to comment Share on other sites More sharing options...
Scully Posted June 11, 2014 Report Share Posted June 11, 2014 Is it owned by an RFD? If so, then he should be able to tell you if it's in proof. If it's out of proof and owned by either a RFD or a private seller then it can't be sold but can be 'given'. Your best bet is to have it checked by a professional and take it from there. Quote Link to comment Share on other sites More sharing options...
wymberley Posted June 11, 2014 Report Share Posted June 11, 2014 (edited) If we're going to get carried away by a couple of thou' and a dimension that is actually the nominal boring for a 12, then perhaps we should toss wall thickness into the equation. PS I don't know whether or not it is still valid, but the Fourth Edition, Notes on the proof of shotguns and other small arms has it that, "Guns proved in Europe under CIP Regulations, where bore sizes are marked in millimetres or fractions of a millimetre, become out of proof when they are enlarged by .2mm, that is .008"". Edit: PS Edited June 11, 2014 by wymberley Quote Link to comment Share on other sites More sharing options...
bellringer Posted June 11, 2014 Author Report Share Posted June 11, 2014 Thanks for your replies. The gun is at a local (Bristol) auction house & the figures are supplied by the auctioneer. From what Wymberley says it would still appear to be in proof. Would think there are hard & fast rules somewhere, would be interesting to know. Quote Link to comment Share on other sites More sharing options...
panoma1 Posted June 11, 2014 Report Share Posted June 11, 2014 I am thinking of buying a nice browning B25, The proof markings are 18.4 (.7244) The bores measure .730 & .729 respectively . Are they still in proof? I have tried Google to find tables but without success. Does anyone know where I can obtain charts giving max wear dia on proof size? Your comments would be appreciated. Unless I have my sums wrong? if the gun measures 0.0056 (just over 5thou) and 0.0046 (just over 4thou) over original proof diameter measured at 9 inches from the breech face? if so it is enlarged less than the 8thou (.2mm) allowed and is therefore in proof, anyway the auction house are responsible for the gun they are selling being in proof, therefore if it ain't......there is comeback, they are liable! There are several books available with historic rules of proof in them but you could contact either of the proof houses to see if they have up to date copies of their "notes on the proof of shotguns and other small arms" available? Quote Link to comment Share on other sites More sharing options...
wymberley Posted June 11, 2014 Report Share Posted June 11, 2014 (edited) Thanks for your replies. The gun is at a local (Bristol) auction house & the figures are supplied by the auctioneer. From what Wymberley says it would still appear to be in proof. Would think there are hard & fast rules somewhere, would be interesting to know. Should you not have heard of it and are still not 100% happy, the reference that I quoted is issued jointly by The Worshipful Company of Gunmakers of the City of London and The Guardians of the Birmingham Proof House. The old American standard for the 12 was indeed 0.725". Edited June 11, 2014 by wymberley Quote Link to comment Share on other sites More sharing options...
seeker Posted June 11, 2014 Report Share Posted June 11, 2014 goog a pdf doc called 'NOTES ON THE PROOF ON SHOTGUNS & OTHER SMALL ARMS' seems to have all the references and c is post 1989 ... and mentions auctions. Sorry Android does not want to v pick up the link! Quote Link to comment Share on other sites More sharing options...
bellringer Posted June 11, 2014 Author Report Share Posted June 11, 2014 Thank's everyone, Googled your doc Seeker & it has all the information up to 1989 as you say, makes interesting reading & I will save it for future ref. Thanks Quote Link to comment Share on other sites More sharing options...
wymberley Posted June 11, 2014 Report Share Posted June 11, 2014 goog a pdf doc called 'NOTES ON THE PROOF ON SHOTGUNS & OTHER SMALL ARMS' seems to have all the references and c is post 1989 ... and mentions auctions. Sorry Android does not want to v pick up the link! Well I'll be blowed. Had a look at the link and in addition to the Fourth Edition, I also have a First. Cost 5/- (25p) and worth a bit more now. Quote Link to comment Share on other sites More sharing options...
seeker Posted June 11, 2014 Report Share Posted June 11, 2014 that was when 5/- would buy a box of yellow wizards and leave change for a fish and chip supper .... real money. Quote Link to comment Share on other sites More sharing options...
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