Normal Velocity Deviation?

[Roosterstraw]

What is a normal velocity deviation in factory ammo? Out of 8 shots with Hornady ELD-X there was a deviation of 31fps out of the same box and averaging 2978fps measure with a garmin.

In a different box (same lot #) it was was averaging in the 2950’s which is about 25fps difference.

 

[JF_Idaho]

I think in same lots 40-50fps ES seems pretty normal.

I posted recently about 2 different lots of 6.5cm Precision Hunter having a 140fps spread between them. 2560/2700

 

[Roosterstraw]

140fps seems pretty high.