beardy_bradderz Posted July 23, 2005 Report Share Posted July 23, 2005 (edited) At the CLA Game Fair today bought an old 'Master' Spanish s/s 12g for £45 (bargain!). The gun has many proof marks on it (presume its been reproved several times as it looks old). The chambers are marked 70mm and they are proved at 900KG. Is it safe to use any modern / nitro 70mm cartridge in this gun? Brad Edited July 23, 2005 by beardy_bradderz Quote Link to comment Share on other sites More sharing options...
dodeer Posted July 23, 2005 Report Share Posted July 23, 2005 yes upto 36g. Quote Link to comment Share on other sites More sharing options...
beardy_bradderz Posted July 23, 2005 Author Report Share Posted July 23, 2005 thanks :( Quote Link to comment Share on other sites More sharing options...
beardy_bradderz Posted July 23, 2005 Author Report Share Posted July 23, 2005 (edited) Just out of interest, my other gun (a Baikal 27 O/U) has 76mm / 3" chambers and is proved at 90MPa (about 900 bar). Is this magnum proof ie. can it handle the really heavy 3" stuff over 42g? (Not that I'd ever want to fire something that heavy in such a light gun :( ). I just wondered as several 3" guns I have seen are proved at about 120MPa / 1200 bar. Brad Edited July 23, 2005 by beardy_bradderz Quote Link to comment Share on other sites More sharing options...
plexer Posted July 24, 2005 Report Share Posted July 24, 2005 According to this BASC Article standard proof is 850bar and magnum is 1200bar Quote Link to comment Share on other sites More sharing options...
beardy_bradderz Posted July 24, 2005 Author Report Share Posted July 24, 2005 thanks again Quote Link to comment Share on other sites More sharing options...
beardy_bradderz Posted July 25, 2005 Author Report Share Posted July 25, 2005 Originally thought it was magnum proof, but that confirms it is obviously not. Oh well no great loss to me anyway. Brad Quote Link to comment Share on other sites More sharing options...
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