You can calculate down from IBO rating, as BPS suggested. At your specs, I would expect about 210 fps. You can also calculate up from AMO specs (60#, 30", 540 gr. arrow), and it looks like 205-215 depending on the amount of stuff on your string, fletching weight, etc. Either way, the Lynx Mag is not a speed demon, but should be an accurate, forgiving bow. You may be getting such good penetration due to the bow being tuned better than your friends' bows. Hard to be sure.