While at the range this past weekend, I noticed a something odd down range. Shooting ends of five arrows, with consistent groups of 4 to 6 inches at 20 yards, one arrow was askew from the rest. The arrows are all numbered, so I know that the that it was not always the same arrow. The arrows in question are gold tip 3555, full length with 125gr up, front shot from a 44# recurve. Any ideas as to the cause of this anomaly?