That's what I'd check first, just to rule it out if nothing else.
C.O.L. range from 2.33 to 2.36 out of the 20 or so pull-downs I sampled.
Are these measurements using the Hornady gauge, if so, not a lot of help to us here.
If they are actual COL, cartridge overall length, (base to tip of bullet) then something is wrong.
It has been asked a couple times here, but I have not seen your answer.
How are you neck sizing?
Neck die, brand?
FL die backed out, brand and how it was set up?