My only gripe is the rough action and it doesnt want to feed all that well in the 6mm creedmoor I bought for my daughter. It shoots stupid accurate though. Maybe I just need to cycle it much harder than I do other bolt guns?
I have the same rifle with the same issue, it's getting sent back to Ruger tomorrow. I think it's a feed ramp issue, on mine if you manipulate the mag by pulling the front back/down (so tilting the cartridge angle down) the case contacts the feed ramp and pops up into the chamber perfectly. If you slap the mag in with an open bolt and rack one (like the manual says) the tip of the bullet will hit the back of the barrel and jam before being popped up into the chamber. So driving it home makes it feel smooth, but you'll notice deformed tips because it's still happening. It didn't bother me much because I usually only shoot at the range, but now my niece hunts with it and she had a jam last year. No bueno.
I'll report back with their conclusion. I sent it in once a few years ago when I bought it and they said it passed their inspection, but I recently read another thread on here where another member with the same issue sent his in and they fixed it. So I have hopes.
I guess that would be my gripe. But for a cheap ass rifle it sure shoots great.