Originally Posted by
mudgripz
If you are using ( may have misread here) some type of full overbarrel suppressor, these often entail porting of barrel and your ammos may run alot slower. Even 1200fps supersonic can end up subsonic - so charts may not be accurate.
I agree with earlier comments that if you wish accurate 50-80m shooting, a ruger is not the rifle of choice. Also agree would be good to just set up some paper and see what does shoot well in your rifle. I have found some hyper velocity rounds have half the bullet drop (much flatter), but also half the accuracy.