I set-up my phoenix this weekend as the nice weather will make outdoor shooting much more enjoyable. I dialed in the scope as directed. And it shot excellent spreads.
After about 10 shots, the spreads started moving an inch to the right and up a half inch.
To eliminate the human accuracy variable (as much as possible), I always steadied the bow on a railing while shooting the same distance.
Previously I had a cheaper (tasco .22) scope mounted on my crossbow. It shot perfect every time after calibration. So I know it's not the bow.
Take it one step further,by taking it all apart and using Loctite,either permanent or removeable,and then re-install the base and the rings.
Make sure your scope is vertical and then allow to dry before setting it up again.
All us old timers have been through that with scopes on shotguns and rifles,before the days of the crossbow!!
Nothing worse than missing that key shot dues to a loose scope,and I am speaking from personal experience.
Bob.
Like digger said, check all the screws first. My buddy had the same problem and it turned out that the screws holding his scope base to the action would loosen every 30 shots or so. Solved it with BLUE Loc-tite.
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Exocet 165 retrofitted with Magtip Limbs
Boo Custom String
Big John's Custom Arrows
Slick Trick 100 gr. Standard broadheads
Groundpounder Quiver Mount