Hello all I'm new to the site. I have LAR-8 Predator 20" 1:10 twist. So far I've been able to load 168 SMK, 44.3 & 45.7gr Varget, Fed 210M, COAL 2.8, Win Brass, and get 1/2 MOA at 100 yds. No chrony data. Question, can I get enough MV out of the 175 SMK to perform better at 1000 yds than the 168 SMK? I see the limiting factors as my 20" barrel and COAL limitation. I have searched the net and found a plethora of data for bolt guns but not much for AR. Your insight is appreciated. Have a good one.