As a simple test you can take some very true shims to change the orientation of the suppressor on the barrel. Try a number of different locations by changing the thickness of the spacers. Put a line on the top when you start and try at least 90, 180, and 270 degrees from there. If the baffles are truly the problem you will find that the stringing changes each time but remains a measureable issue. If its just a weight or ammo issue than it will change but not necessarily in the same order or arrangement. Suppressors normally change the point of impact in relation to the point of aim unsuppressed. I have heard people say that the baffles and jets in the can will create issues with accuracy but I've not seen but very few cases where that seemed to be the real cause.
Good luck and keep us posted as you find things.
Frank
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