I took my new sbr and suppressor to the range for the first time today and got very confused. I shot a mix of handloads hornady 110 sp, nosler 125 bt, Sierra 220 mk, and factory Remington 220 subs. I was shooting at 50 yards. groups without suppressor where pretty good around 1.5"-2". Once I put the suppressor on I wasn't even on paper! I had to aim around 2' low to get paper? I did not have a lot of time so I didn't mess with it too much but once I pulled the suppresor off I was back on paper. I shot un suppressed, suppressed, un suppressed, suppressed every time repeatable. I also noticed that with the sub loads it looked like the few bullets I got on paper with suppressor key holed they didn't keyhole without. Gun details are seekins upper/lower cheap mil spec bolt, Houston armory 8" 1 in 8 twist barrel. Please give your input going to load up some more ammo and try again next weekend.