Originally Posted by RichWafta
I think if we are using a chrono to ensure that the guns being used in FT are legal, then the chrono itself must be beyond reproach. If this model is battery or muzzle position sensitive, then it isn't fit for purpose surely?
That writes off most chronos. The only one I know that does work pretty well is big, expensive, and you need to stand back from. The shockwave off an airgun still needs to be considered IR or not. That's why we ideally need a minimum distance rod.