+10 would only add .00788, or .008 rounded up. You'll end up with .014, not .016, and certainly not .160.
To my knowledge HK never made +10 rollers and you've probably discovered one reason. First, they never designed the rifles to make use of them and second, the window in the bolt head is only so big. If your trunnion isn't cracked or excessively worn and your locking piece isn't excessively worn, I'd say your barrel needs removed and repressed. At this point about the best you can do is go for +8 and see if they will work. You'll have a gap of .012 but that's still in spec in the ideal range. IIRC, minimum is .004. Ideal range is .010-.018.
If you do get rollers installed that work I advise to keep a close eye on the gap. If it continues to shrink stop shooting it and send it to someone for repair.