I spent some time at the range today with my Rem 308. Same load I've used before and have put 5 shots into 3/4" easily, when I'm shooting good. Today I was taking mostly 3 shot groups as I didn't have much ammo left from that batch. (165gr Ballistic Tips and Varget)
I didn't go under 1 and 3/4"s at 100 yards! I also had a target at 200 yards and took two 5 shot groups, with the best being 4 and 1/8th". (I did manage to get 3 shots under 7/8" on each group at 200, but the other 2 were way out of the group)
When I got home I decided to check the scope mount screws. Each one was loose. I've been shooting this rifle a lot lately and haven't bothered to check the screws, as everything has been fine until now.
I felt like I was doing my part today, but the groups I was seeing made me feel like I should have stayed at home. Needless to say, I'll be keeping a close eye on the ring screws from now on.