Took my Mtn Ascent in 280 Ackley out today. Only shot it a few times because it was 14 degrees. With Nosler 140 gr. Accubond factory loads recoil was like my 243 Guide Gun but I had the weedburner on the end of the 280. Cleaned after every shot so really can't tell about the accuracy so far but they are all in the same neighorhood. It's a very nice feeling and shooting rifle. I put a Swaro Z3 3-9x36 w. a 4A reticle on it. Pretty sure I could go hunting with it right now. I have a Montana 300 WSM and a Classic 270 WSM I have had since the 8400s first came out. The 270 short mag being one of my favorite rifles. I've never had any accuracy problems with either of them. The 280 AI may be my new favorite Kimber.
