Just cracked my Dux open for ya, Short. Red main, red valve, fluted hammer, and standard powertube. Never had to re-chrono it, and I get at least 35 at 270-280, but it dies quick. I always change out at 30 regardless. Only thing I need to do before starting is size my paint, usually with a small underbore.
It still gets a good amount now with the colder weather, but I never actually stopped and counted while being shot at lol