Thread: Bipod, uphill shooting issue.

If I've Interpretted "go down to the range, all good" correctly you have confirmed zero after the miss.
I was going to suggest potential of forend touching barrel when loaded on bipod but doubt that would make you miss at ranges close enough to throw rifle at, has me more thinking it's to do with recoil pad position against your shoulder when shooting on a steep uphill angle (taking from your post the rifle was on a steep upward angle relative to your body position) and the butt of the rifle dropping under your shoulder under recoil resulting in shot going high.

The best thing you can do really is find a spot to shoot at a target on steep angle, from bipod, with spotter and do some practice and comparison of results (bipod vs bag) in that scenario. Otherwise you will just be left with speculative answers about what the cause was.
If the miss was from as close as your post suggests I'd be most strongly suggesting it was a body position/shooting technique issue.