Yes, it's a 20 gauge. I'm sorry I bought the 20 gauge. Finding ammo for it is painful. I'm slowly buying it, when iI I find it. I haven't shot it with the bandilier yet, so I'm not sure. It's very accurate without it. When I shot it, looking down the barrel, it's off target, by about a quarter inch. But that could just be me.Is that a 20ga 870? Do you have any issues with the weight of the bandolier swinging around and affecting aiming?