I have a browning X-Bolt 6.5CM. I have attempted to shoot Hornady Precision Hunter 143 GR, and Browning BXR 129 GR ammunition. I haven't had any luck with either holding a decent group at 100 yards. Does anyone else have a similar rifle? What works for you? And has anyone else had any flaws with either of these ammunitions. Hand Loading is not an option for me, so please do not suggest it. thank you.