Where can I shoot 100 yards plus near Fort Wayne? I go to Roush Lake range in Huntington, but can only shoot 100 yards there. I have a Spike's AR-15 and just got my used ACOG TA31f-RMR!!!!!! scoe!!!!. Its the first time I have ever sighted in a scope. I got it adjusted to where I could hit about every thing in a 10 inch circle from 100 yards, just resting the rifle on the magazine. I used about 100 rounds. I know I can do better after I get a bag or a good shooting rest. Is a front bag O.K. or should I get a good shooting rest? What should my group be at 100 yards with a 4 power ACOG? I didn't shoot with the RMR red dot site, thay have no adjustment? I wiil call Trijicon for an owners Manuel. Thanks.