I ordered a 700 Mountain LSS in .270 win, but I'm concerned about the light weight barrel not performing as well as a standard medium weight barrel. I'm wanting at least 1 moa groups. I have not shot the Mountian LSS yet, he'll let me bring it back as long as it in still in new unfired condition. I had thoughts of swopping it out for a Browning A-Bolt Stainless Stalker. What do you think ? Keep the Mountian LSS or swop it for the A-bolt SS ? Please help me make up my scrambled mind !