Hey guys, just picked up a Mini and it had the stock bolt installed. The guy I traded with forgot to include the Boss bolt so I played a game with it the other day and was not disappointed but not overly impressed either.
Put the Boss bolt in today and tuned per Boss instructions, gun was shooting just over 300 FPS and accuracy improved. Don't ask me why, maybe due to reduced kick but same paint/barrel combo shooting 160 psi/ dwell of 3.5 brought my grouping in significatly @60 ft
BTW, this thing shoots like a bat out of hell.......the trigger is amazing for the price of this gun