Throwing another 25 grains onto your arrow weight would bring my speed estimate down by about 5 more fps...which should put you right at 303-304 fps...give or take a fps or two.

Anytime after tomorrow we should get together and have you fire a few through the new chrono to see what speeds it gives you. Heck, I should have you fire a few through my Radarchron to see how it compares to Lonnies.

You might just be a bit overdrawn....half inch or so. Shortening the loop might help but shortening the draw length itself is probably the better solution. Give it a whirl when the time comes.