I'm having a bit of a problem lads.

Setting up a new scope and having some difficulties. One minute, everything seems to be fine, then it's all over the place. I can stand a little bit of waywardness, which I firmly lay at my doorstep, but I'm getting some real big differences. One minute it can be shooting fine then all of a sudden it will drop a couple of pellets about 3" low (in exactly the same hole), then return to the previous point of impact 3" higher. All this is bench resting.

I've tried all the obvious: Barrel clean, check and tighten everything up, do a string on chrono, select and size pellets. Gun is EV2 mk4 less than a year old, scope is a nightforce 12-42x56. Seems difficult to put the blame anywhere with the kit, so any ideas?

I intend to do a full string of 60 shots over the chrono at some time today as the sudden drop and then return to original POI would seem to sugest a temporary power drop to me. I can't imagine any fault with the scope doing this.