Anybody have one of the Guncrafters 1911's in .50GI, or the Glock top end conversion in this caliber? Any experience at all with this round? From all the data I've found it's performance, velocity wise, is just a bit better than a .45 ACP with the same bullet weight. Where this round starts to shine is with the heavier bullet weights (.275 gr. and 300 gr.) that still fly out of the barrel at .45 ACP velocities. What are your thoughts, both good and bad, about this round?