I have shot 3 gun and USPSA since 2009. I recently wanted to get into DMR matches. I shot my first DMR at K&M last weekend. I took my 16" 5.56 3 gun AR with a Vortex PST 1-6 Gen 2. I had the weakest scope at the match. There were static targets 300-520 yards with many of the 520 yard targets being 12" plates and moving targets at 150 and 300.
I did ok, I had a lot of hits, hit all the movers, but it was hard making out the long shot coyote and bobcat steel targets, reading wind and seeing misses with a 1-6x. I was much slower than the better glass.
I am building a DMR 5.56