Very dissapointed. Poor muzzle velocity.

Bought 80 rounds of this ammo locally Saturday to test and ordered 800 rounds to use for tactical matches where we occasionally have up to 750 yard shots (typical 50yd -600yd). In testing the ammo with a Spike's 1:7 16" LE barreled upper with an Odin adjustable gas block I only averaged 2440fps & an SD 40 using a magnetospeed over 25 rounds fired. I tried 10 rounds through my daughter's 16" 1:8 PSA upper and averaged 2401fps. It was 102F out so I would expect a bit less velocity when it is cooler. It is advertised to produce 2790fps out of a 20" barrel. Only in their dreams. This is marketing hype B.S. as you only lose 25-50 fps per inch of barrel in .223. I saw another study showing they only got 2450fps from a 16" barrel and I should have believed it. Groups were OK probably sub moa (had a 12-15mph gusty cross wind so was not really trying after getting my scope dialed in). No issues shooting it once I dialed in the gas system. Will try this ammo in my 26" WOA upper to see what kind of velocities I can achieve but I am not too optimistic on the 2790 fps...