What is me38??? And, if apparently it was correct with the Brocockl, how did you get 715 ft sec with other stuff..did you oil the barrel in between?
me38 is one of the models of a brocock revolver.....the one that the peice of shit press went mental about.....never oiled the barrel in between in shots.
try changing the grain on the chrono
Good idea and also measure the weight of each pellet that you test to be sure you get the right grain input into the chrono...