I too must be in the "lucky" group.....

My Kimber 8400 325 WSM Super America shot factory Winchester Supreme 200 Grain Ballistic Silvertips into 5/8 - 3/4" groups. A buddy I bought it from took it to Africa and shot 13 African plains game animals with 14 shots.

My Kimber 280AI Mountain Ascent shoots 1/2 - 3/4" groups with 3 different handloads.

NO ISSUES with either rifle.