Ditto the graybeardoutdoor.com forum, they have alot of good info. on the NEF on that site. Besure to read all the stickys on the NEF Centerfire forum. I own a couple of rifles and different barrels to fit. My most accurate is the 25-06 Ultra in 26'' barrel,223 standard in 22",450 Marlin,and the 7mm-08in 22". The first 3 shoot to my liking but the 7mm needs some more tinkering. Some shoot good out of the box and some will make you pull your hair out. I forgot the 50cal Huntsman,it shoots a 3" group with iron sights. Zeak