Originally Posted by Welsh Wizard
I was at the chrono when some chap went 806 with 8.4 on first shot. His muzzle was very close to the chrono as no dought he was trying not to shoot it!
He loaded again but this time I made him move his muzzle back about 6 inches. His reading fell by 25 fps!
Caldwell and infared would have worked better!!
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?