Just got my Bulldog M257 back from Airgun Revisions. Rich did the "high standard tuning" plus installed a de-pinger. Thrilled with the performance now. From the factory, with a 3000psi fill, 5 shots would put me down to 2000psi. Now I get 10 shots before 2000psi. Plus before, I had to hold over 30 MOA at 150 yds. Now only a 20 MOA hold over. Really impressed with how well it shoots now. Can't wait to take it out further.