I have never seen a difference in trajectory (lets say in the 275-305 range) out to 30 yards, but at 40 yards I did see a drop when I would go from my 356 grain pro 22's, to my 416 grain hunting arrows last season with the Patriot. It was around 1-2", not much...................but noticable to me and also able to throw me out of a 10 ring on a poorly judged 35 yard 3D. Shooting at a 10 ring on a dreaded bedded McKenzie buck, at 312fps like my current allegiance, I can shoot that target for 35 yards when it is really at 30 yards, and still cut that 10 every time. At 275 fps it falls out of the top of the 10. I have done this a couple times on different targets just to learn what you can get away with, and shooting at 312 is noticable. This is what I think I will be competing in HC with this year except for ASA.