My gun is over engineered, 20+ lbs with a 31" rock creek 5r 1.25" od bbl , my MV runs high RL25 for 250 gr smk and H1000 for 300 gr, both loads are over 2800 fps,Mike Rock hooked me up with the barrel 1 in 10 and Tim Roach did the install at GAP, not knocking any one but at the time it was the...