My Merkel 140A 500NE rifle will double if you pull the rear trigger first - it's always done this but luckily I've always pulled the front trigger first. I actually discovered this when firing single shots out of each barrel in turn - the cocking indicators and firing of the ejectors provided evidence that both barrels have "fired" if you've only loaded and shot out of the LH barrel.

From various forums it appears that the larger calibre Merkel doubles (not sure of the models affected) such as 470NE and 500NE may do this, not all but not that uncommon either. Has anyone had this happen to them and have they managed to get Merkel to fix (and admit fault)? Would be very interested in replies from any other aussies in particular.

[Mine will do this with 570gn loads when shooting offhand, but not with the lighter 450gn loads. I also found out the other day that it will do it with my 430gn cast loads (light) when shooting off a bench.]