Building a lightweight rifle and wonder how light i can go and still safely hang a suppressor off the end? Id like to go with a #3 at 26" long but not sure it wont flex with the suppressor. thoughts?
The weight of the suppressor flexing the barrel causes the shift from what I've seen. In my experience (5 suppressors on about 20 different rifles) as long as it's a good quality suppressor, and the barrel is threaded correctly you should not get much left/right POI (I've seen no more than 1/2 MOA on any of my rifles), but you will get a lower POI based on the flex of the barrel. On a short/fat barrel I've seen as little as 1/2 moa shift downward. On the long thin barrels as much as 4-5 MOA. This is mostly with a Thunderbeast Ultra 9 and Ultra 7, so these are among the lightest weight suppressors out there. I would expect significantly more POI shift with heavier suppressors, but I haven't personally tried anything other than the Thunderbeasts.So the suppressor caused the shift or the weight of the suppressor pulling on the barrel?
I guess I'm more worried about the weight rather than muzzle diameter. 30 cal