Morrey
Member
I bought a SIG QD 762 suppressor primarily to use on a 300 BO with sub rounds. But I thought I'd try it on my Ruger SR762 .308 to tame at least some of the sound report from standard velocity rounds.
I tested the suppressor on the .308 with the same standard velocity rounds I load and hunted with all last year. The gun was sighted in with no suppressor attached, then when the suppressor was attached - the point of impact changed significantly.
The horizonal axis stayed dead on, but the vertical impact rose almost 5 inches high. The shot groups seemed better, tighter and more consistent with the suppressor attached. I took the suppressor off, shot two more groups and the POI dropped back down in the bull at 100 yards.
I went ahead and re-zeroed the scope to shoot with the suppressor attached. My question is: Is it normal or typical for a suppressor to change POI in this fashion? Is this POI shift due to the weight of the suppressor changing the barrel harmonics?
Thanks for any feedback.
I tested the suppressor on the .308 with the same standard velocity rounds I load and hunted with all last year. The gun was sighted in with no suppressor attached, then when the suppressor was attached - the point of impact changed significantly.
The horizonal axis stayed dead on, but the vertical impact rose almost 5 inches high. The shot groups seemed better, tighter and more consistent with the suppressor attached. I took the suppressor off, shot two more groups and the POI dropped back down in the bull at 100 yards.
I went ahead and re-zeroed the scope to shoot with the suppressor attached. My question is: Is it normal or typical for a suppressor to change POI in this fashion? Is this POI shift due to the weight of the suppressor changing the barrel harmonics?
Thanks for any feedback.