Barrel Break In...I\'m a believer I had a post a few months ago where I was having trouble with my new 300 WM Sendero when I tried to extract the spent cartridges. They were getting stuck. Anyway, I took everyone's advice and did a true barrel break in and initially the cartridges were sticking, but by the end of 20 rounds interspersed with cleaning, all of the cartridges are flinging out of the chamber effortlessly. I just wanted to say thanks to everyone for the advice on resolving that problem. By the way, I shot a 5 inch group at 600 yards last night and took out 4 bowling pins from the same distance with 4 shots. It never ceases to amaze me what you can do with a good rifle...and I'm still a rookie. One last thing...I was shooting right over the heads of 2 deer that were grazing on the range last night. They were at about the 350 mark and seemed to be enjoying the show. Great night!