Same with the 15 or so Kimber Montanas I have owned. Not a one of them was tinkered with, other than my trigger weight preference, and all were and are tack drivers.
Did you shoot the rifle I bought from you? It has been far from from a tack driver for me..
I don't know if you'll see this response as it has been 4 years; but, I never saw your post until today. I went back and checked my records and notes. That particular rifle shot exactly three boxes of factory Nosler ammo and was right at an inch for the rounds that were shot on paper. It successfully, and accurately, hit, one gallon water/milk jugs filled with water out to 300 yards. So, 100 yard paper targets were at 1 inch and, as common sense dictates, unable to be measured on exploded water jugs at varying ranges randomly placed between 150 yards and 300 yards.
_________________________________________________________________________ “Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
