Shot my BRX prone rifle Sun. 200-16X with irons on the MR-52 target while fire forming. All 20 shots landed within a 2.25" group. The 16Xs all are in a 1.5" group. Nine of those are in a 1/2" group.It splintered 4 golf tees in that string. Two thousand rnds and it still shoots quarter minute groups.