interesting read.i have just bought one too.a 20" sps with a mtc genisis 5-20x50 with leup mounts.never fired a .223 like this and was surprised at how loud it was and there was also a lot of felt recoil.nothing compred to my .44 but it does kick.not being a prone shooter and never having shot past 50m.so today at severnside was a bit of an eye opener.shooting spinners at 50m is a lot of fun but no challange,100m out was a first for me and i shot about 1/2 groups.fairly happy but i thing a stock change will follow soon.the silencer is on order so that can not come soon enough.hopefully with pratice i will be able to improve my very inexperienced technique and do the gun some justice.