Thread: 308 ELD-X 178gr experiment - bullet or powder manufacturer?

I have the standard 22.5" Tikka barrel and the drop tests calculate to ~2700fps vs a book value of 2450fps.

That's using the Strelock+ trajectory validation function and checking it in the Hornady 4DOF calculator online.

That's a huge difference in velocity and I don't really believe it to be honest, still looking for reasons it could be wrong. I did three drop tests, all came out the same. Zooming back and forth on the bike, measuring, shooting, measuring, shooting. Like, wtf is going on here? I mark each target with the anticipated drop before I shoot and I could see they were hitting well high from the shooting position.