Recently my MP9compact went to Smith for a repair because it was not firing some ammo. I went to the range today and fired about 50 rounds of Winchester White box 115 gr. 9mm. All was well except for one round that fired but did not eject. The case was in the chamber, so I cleared the weapon and the shell came out. I noticed that the case had the primer blown completely out of the brass. Is this just a bad ammo situation or a bad weapon? I fired more rounds, and the weapon worked fine. Any input would be appreciated.