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Originally Posted By: 6mm06

(2) I read somewhere that the Ruger American Predator that is threaded from the factory, has a barrel size that won't group well with the added weight of a suppressor, especially once a few rounds have been fired.  Is that true?  And if that is true, then what about my rifle that has the .680" diameter barrel? 

 


It's not specific to suppressors.  Adding a weight, any weight, whether it's a suppressor or a tuner or a muzzle brake or a banana, to the end of any barrel, WILL effect the harmonics. 


What effect that will have, is not very predictable.  Other than, it's probably going to change POI.  Effects on accuracy, you just have to find out.  It could as easily improve groups as make them worse.  Or, it might not make a noticeable difference for a particular barrel and load. A few variables are in play and it just depends on how they line up.


That thinner, less stiff barrels might be more likely to show the effect, is intuitive enough.


Load tuning "should" bring the accuracy back, if the weight makes it worse at first.


Only point being, that hanging a weight off the end of a barrel, does change the harmonics.  And that can effect the accuracy.  All anecdotal evidence to the contrary that you might hear, not withstanding.


- DAA


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