I have a Mossberg that has interchangeable barrels and I have the riffled and muzzleloader barrels for it. I picked up a new Mueller 3-9x40 which is the perfect all purpose scope. It gathers alot of light, it has a unique reticle design for fast target aqusition and dark targets. Standard fine cross hairs on other scopes are fine until your in a dark swamp hunting a bear 15 minutes before dark. It is by far worth every penny they are selling it for and I expect to see them wide spread soon. This scope will easily compare with some of my $200-$300 scopes and are on sales right now, they can be purchased direct at www.muelleroptics.com and I highly recommend this scope for a multi purpose rifle combo. It has a lifetime warranty and fixed parralax setting of 100yds.