I do not own a beretta. BUT...Benelli and Beretta use the same chokes and such for their guns. My brother has a Benelli SBE and we tested his gun last year with the factory full choke and it was too weak of a pattern i thought. I would definately go aftermarket but hey...shoot it and find out. I shoot my gun every year especially when i get new shells or in my case this year i am using my 870 supermag intead of Ithica 37. I shoot at 10 yds. and then at 35-40. Shooting is really the only way to tell how YOUR gun will shoot.