Okay people here's the first report on my findings with my 340 st's. My bow is set at 65lbs and my arrows are cut to 30". I shot a flight of my PSE carbon force 300's and yup they're lightning quick. Then I shot a flight of my 340's and unfortunately they are a tad bit slower. At 9.5 grains per inch though I should have seen it coming. BUT (this is the best part), I shoot tighter and more accurate with them. I was told the heavier the arrow the more forgiving they are. If this is true, I'll take the Axis any day of the week. Now, I'm still waiting for my GT Pro Hunters, so that will be the next trial run. For now I'm loving my new found pin point accuracy. Gonna shoot em some more tomorrow or friday. I'll let ya know if I find anything else.