I have been using AMP Tactical bb's in the system, both .25 and .28's, and have had no real problems. .28's are my go to bb now due to the weight and better accuracy. I am getting out to 200 ft right now with a spread around 150, 170 that gets shotgunned out. Its an estimate using Google Maps. Not the best I know but its all I got hehe.
DAS is sending me a new nozzle to try out, a plastic one, that should help with the accuracy to my understanding. They have two new types out right now, plastic and aluminum, and then mine and probably other limited edition users, steel. The aluminum