Originally Posted By: Fleetmon
Mine is an "E" and has been flawless. Like you, mine is a pocket back-up....typically accompanied by a PM45 or, if tighter jeans, PM9.
Mine is a YE serial also. I have yet to break it in yet. As of now mine is sitting in the safe with the lock mechanism wedged in the breach in effort to break in the extremely tight recoil spring.
I can tell already which ammo it will cycle based on how a round seats in the chamber of the barrel when it is removed from the gun. I have several different brands of 9mm and when seating a round in the chamber certain brands in which the bottom of the round is wider at the top of the case will stick. Others will move in and out freely and seat all the way down.
For instance I shoot a ton of NATO 124gr IMI (Israeli) rounds in my PPS and SR9C because they are very accurate and consistent loads, however they are not a long nose round like a blazer brass or UMC round and they stick in the barrel of the DB9, which will make them hard for the extractor to fully remove. The blazer brass and UMC rounds slide in and out with ease and seat well, as they are long and skinny bullets.
I believe this along with an extremely tight recoil spring is the reason this gun is finicky. I will test this theory when I go to shoot this weekend.