I know it's not 8208, but I found a fantastic load for mine with AR Comp. 27.7 grains in a Hornady case with a CCI 450 at 2.250. Five shot groups cluster under an inch at 220 yards. My barrel is a SAAMI chambered Lilja 19". I found the CCI 450 is the key. I tried 41s and my groups opened.
I now only run 8208 in my .223 Wylde and NATO chambered ARs. It's a great powder.