John if you built this in the winter slacken your scope mounts then retighten and rezero, it may have some tension between scope tube and breech due to the ambient temp rise and different rates of expansion of different metals since you built it. Once normalised it should minimise any further movement.
If the breech is going to flex it will be in the middle where it is weakest, if you had both mounts on the back as some do with the connect scopes i wouldn't put it down to that, but worth a try.
HFT, for people with only 2 buttucks!
VooDoo TwoTwo The next chapter.
Last edited by Tench; 7th June 2015 at 02:19 PM.