Here is my dillema. I want a 300 RUM and debating on which model to choose, the Sendero or XCR. I know there are pros and cons to each and depending on situations will be the make or break with this selection. So let give you some details. I am 28 yrs old and in really good shape. This rifle will be used for big game hunting, elk, deer, bear, oryx, etc here in NM and AZ. There are opportunities to shoot out to 500-600 yrds. I plan on putting good optics on the rifle (4x15x42). Which rifle model would you choose? Would I regret getting the heavier Sendero?