Hubert

I have two scoped Doubles. A 9.3 x74 Francotte and a 400 3 1/4 Alex Henry. The Francotte was built with a scope and shoots both open and the scope to point of aim with the same load and no difference in the grouping.

The AH had the scope added with claw mounts sometime after it was made and will not shoot the same load from both. I have two different loads for it depending on what I am doing. I will say the scope stays on 90% of the time.

If your rifle acts like the AH you will need to start at the beginning to develop a load and always shoot through the scope.