I own 6 Ruger rifles topped with Leupolds and have never had a problem with any of them. One is in .308 andit hasmade groups on an 8 inch bullseye at800yds. The only negative things that I've heard about Brownings is the factory trigger is very weak and they're not consistant at long range. So no problem if you shoot medium range and don't ever mistakenly pull the trigger with the safety on. I personally prefer .308 over .270 after having recovered many .270 bullets from hogs and no .30 calibers. But a deer isn't as tough as a hog.