Ammo for RAPC. 45 ACP

[2tall79]

Just picked up one of these "gray" pistols and headed to the range. I went thru 100 rds of 230 gr RN without a hick-up. But when I loaded up some handloads with Hornady XTP's it wouldn't feed them at all.
What defensive ammo are you guys using in you RAPs? Thanks