A few weeks back I had taken my rifle into a gunsmith to have the riveted extractor swapped out on my .300 Win Mag Sendero. The gunsmith, who I was very impressed with, said he took the liberty of fixing a couple other things (at no extra charge) he had noticed. One of those things was tightening the stock down to 55 in/lbs. I have a McMillan Game Scout on my Sendero, and had it tightened to 45in/lbs, but he claimed for the magnum calibers it should be at 55. Having spent a little time at the range this past weekend, I wasn't shooting as tight groups as a typically do. I don't want to make excuses, and I may have been just having an off day, but it brings to light a couple questions. Does changing the torque on the stock to action change point of impact, and do rifles have a "sweet spot" when it comes to torque that will have an effect on groups?