Saturday was the opening day of rifle season here in NC. I bought a Ruger M77 MkII in 300 WM to hunt elk out west and since I sold my 270 to help pay for the beast, that's all I have to shoot deer with. I took it to the range a couple weeks ago and put about 20 rounds down the barrel to make sure it was sighted in where I wanted it and to get used to the recoil.(Not too bad after I got used to it) I got into the stand Saturday morning and proceeded to miss a nice fat doe(I'm hunting meat, not trophies). Since it was pretty foggy, I thought I must have hit a branch that I couldn't see in the scope. A little while later I picked out a little yearling doe and made a nice neck shot on her and she dropped in her tracks. I got her cleaned and quartered in the cooler and thought I might as well hang out and see if I could nail a bigger animal later in the day. About an hour before sunset, 8 does and a spike walked out into the shooting lane. I waited until the buck was out by himself and lined up for another neck shot. I missed again! (I actually found where the bullet hit the ground in front of him). When I got back to the stand I started looking my gun over to see if I'd busted the scope (a cheap swift 4-12) and discovered that the rings had come loose from the gun. I'm using the rings that came with the rifle from Ruger. The scope was tight in the rings, they'd just come loose from the bases. Should I put some loktite on them to keep them from doing it again or just keep an eye on them and double check them before I go out?

Thanks in advance.