Originally Posted by RobF
Think mine is doing 2-3 fps standard deviation over 20 shots with exact express from the tin.
Standard deviation isn't the max difference between each shot, it's an average of the difference between them. So on average the shot difference is 2-3 fps.
mmm...that's really good. Even disregarding the crazy readings at best I'm getting a range of 10fps. But I'm not sure that would constitute a problem with the reg. So I'll guess I'll carry on with it.
However, I think the problem these days might be finding someone in the Midlands who can/will service a Walther.