Air barriers with suppressed 300?

[Rikky Lee]

So the rifle is not bedded at all? Have you checked for obvious flexing by pulling and pushing the barrel against the stock (left and right and up and down) and also clearance in the barrel channel?

Also, what are your 50 yard groups like?

Based on what you have described (and without looking at the rifle and shooting it myself) I would suggest a bedding job is required.