Been working up a load for my Kimber 308. Switched from 150TTSX to 130TTSX and the point of impact changed about 6 inches at 100 yards. Change was high and to the right. Don't recall the difference between 150's and 165's but think it was similar. I've gone through the rifle per the Montana Tinkering thread and it will shoot MOA although it is finicky to find a good load for. Just curious why this rifle would change so much when most others I have will shoot almost any load without ever changing the scope settings.
Is this just a quirk of light rifles and skinny barrels? Anybody else have a similar experience?

I am continually astounded at how quickly people make up their minds on little evidence or none at all.
Jack O'Connor