HD that surprises me. That is a bit slower than the IBO rated speed of 335-345. You're shooting 1/2" longer draw and an arrow that is only 35 gr over the IBO std. You should be getting somewhere around 330 fps. Is your ATA length OK?
Using the below calculator with my new Onza III by plugging in my draw length and draw weight the IBO rating, I came up with a figure on my chrony that was just a hair above the lower IBO rating. You can read my posts on the Onza in this forum.
http://backcountrybowhunting.com/articles/calc/