I just got my 45gap Winchester Ranger sxt 230gr Hp LEO only ammo. Since the service model 45gap is my CCW I have been collecting as many different ammo choices as I could. This if my testing goes right will replace my speer gold dots. I will Chrono the stuff in both the 4 and 5 in xd and let you know what I come up with. Also I am going to do a water jug test to see how the round opens up or if it even works in the gap.