i experienced not so tight groups compared to my old 2 prong set up also . it was a tuning issue. i still cant get the biscuit to group as tight past 30 yards. as far as being a hunting rest with no moving parts its hard to beat. i loved and shot the muzzy zero- but it looks way to c0mplicated. im experimanting with the nap quicktune 360 after the season is over but i had initial problems with that too. it keeps me busy anyway
