Optima MPA TS owner. Once I got it cleaned, lubed and broken in no problem. Doesn't really like light loads but functions awesome on Heavy Filed loads, slugs and buckshot. Only complaint I really have about it is that everything that is bolted onto the gun needs to be locktited as the rail, sights and stock all managed to work their way lose after 100 rounds. Very accurate and well made and good bang for their buck IMO.