wild labradar speeds?

davsco

Private
Full Member
Minuteman
Jan 1, 2014
2,223
1,802
NoVa
outdoor range, heavily covered for sound reduction to appease neighbors. breaking in a new rifle. couple shots no problem, around 2950fps. then two 4500fps and later a 6000fps reading then back to normal after that! brass was fine, gun didn't blow, groups were good so clearly the big numbers were a mistake. any ideas? easy enough to go into the series and delete the fliers.