Sounds like a sweet set-up. What speed did 30g provide?
IIRC I was around 2900avg with 29.5 of 10x in my 18" ARP. Accuracy was good, but ES was pretty wild. At 6.8 ranges it was plenty acceptable. I'm going to keep hunting with the 120SST for now until they prove to not perform. Never had the warm fuzzies on Barnes at moderate MVs, but sure have heard good reports on the 95TTSX. They claim is was made to open well at 6.8 speed.
Thinking hard on a 20"+ bbl for hunting. Prob a target crown. May just pull a 223 bbl and go for it to see if it works out. Have a few spare lowers as well, so may do a full build...
