I've been using them since they came out, currently have 3, a trapper, 1 built on a 375 top eject action and a 24 in barrel version. Have tried several bullets and have settled on factory 200gr when not in brown bear territory, 250gr Kodiaks over imr 4064 when hunting moose or in brown bear country. The Kodiaks open up on deer, are very accurate and hold together/penetrate well on larger game. Have predominantly taken most shots under 200yds as hunt rain forest for most part. One unique trait is all bullets used hit same point of aim at 100yds. Found the hard way that the 250gr power points do not open up unless shoot shoulder even on brown bear. Recommend peep sights with a narrow front sight.