Leupold scopes have been in my inventory for over 30 years now and have been the most consistent scopes I have ever owned. Rarley do I ever have to touch the adjustments from season to season unless the scope takes a pretty good bump.

I would be looking at other factors other than the scope.

Look at the bedding on the stock and forearm. When your shooting on the bench where are you placing the forward bag? Is there any touching of the forearm to the barrel? Have you done any shooting off the bench on paper to see where its hitting? Other than at game animals?

Once I get a load worked up and a zero I get off the bench and start replicating how I will shoot in the field. I will shoot from standing, sitting , braced kneel and prone to see how my muzzleloader is shooting.

If you have not done all of that with your rifle... don't be judging the scope harshly yet.