I'm reloading for my Taurus 24/7 Pro pistol in .45 ACP. I have come up with a fairly nice load of 4.7 gr of Titegroup with a 185gr Ranier all copper plated bullet. However, there is some blow by gas showing on the cartridge after ejection. Am I not loading for enough pressure? Could this gas blowby be caused by the case not expanding enough to create a tight seal on the chamber?