If you own a 60 Mag Or A 80 March . do your self a favour and get one of Johno's top turrets . Excellent . the standard one used to drive me mad ( madder ) . it is to low when even the small side wheel is used and way to sharp on the edges . just got mine today and it is like driving a Rolls Royce . smooth and good looking , ( bit like me ) recommended .??? HOLLY PS and no i have no connection to AJP .