I have a S&W M&P 9mm. I have reliable fed 800 rounds through it. both handloads and factory rounds. for the second time in the last 200 rounds i have a handload stuck in the chamber and the slide is stuck and i can not unchamber the round. I do not want to discharge the round for fear it may explode and im worried about forcing the slide. what is the proper method to get the live round out, and any ideas on why this is happening. i measured the rounds and they appear to be exact to all others i fired. it is a reload with hornady tap brass and hornady XTP 145 hollow point. OAL is 1.55 and the crimp at the bullet is .375 and case length of .749. thanks