Originally Posted by RobF
I did have some on... I could try it again... i only used it for balance before.
If you try an overly heavy muzzle and the poi shift disappears then you can safely say the problem is muzzle position on firing, if it makes no difference then you can rule that out, so it's a step by step process.
only way your going to solve this is to try it in stages, I would start with the muzzle weight, then alter hold and test for shift with different holds, after that it's different firing cycles.
As Sherlock said,
Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.