i've got a pair of beretta o/us that i use quite a bit. one is in 30"06 the other in 9.3x74R with a set of 20 ga barrels that fit either action. The 06 is the most accurate double i have, groups into 1" consecutive barrels, the 9.3 does about 2.5". none of my sxs will do that 1" thing. my old evans will to it pretty close but not consecutively. the merkel will go almost alongside of the 9.3. couple of points - the o/u is much easier to scope, and eventually everybodys eyes get old enuf to need that. the o/u for reloading is slower than a sxs because you have to open the action so much further. Once opened all the way cartridge length is not a problem, but if it isn't quite open all the way the bottom barrel is a problem. having the xtra shotgun barrels is a big plus when on a trip. its always nice to be able to do a bit of bird shooting, or in africa they get used at night on the small cats