I am a first time firearm owner and I purchased a M&P Shield 9mm. Last Sunday was the first time I took it to the range and I put 100 rounds of Winchester FMJ 115gr and I only had 1 stove pipe. Yesterday I went back and put another 50 rounds through it and had 1 stove pipe and 1 casing got stuck in the chamber. Today I put another 50 rounds through and had 2 stuck in the chamber 1 live round and 1 shell casing along with 5 stove pipes. I have also put 25 Winchester hollow point with no issues. Am I doing something wrong or should I just keep shooting it. Also I live in Mass so it is Mass compliant. Thanks