Hey guys I need your help. I went this weekend to sight in 2 new rifles, a Savage 10 & a Remington SPS Varmint, both .308. The Savage was shooting 3 round groups at 100 yards under 1" easy with 2 types of ammo, Hornady & Berger. The Remington was all over the place. Groups were low, high, & everywhere. I triple checked all screws were tight, disassembled & still the same. I'm a very proficient shot & this was frustrating. I'm ready to send to gun back to Remington. Could it be the junk SPS stock ? Any suggestions ? Both rifles were cleaned prior to shooting also.