I recieved a Smith & Wesson M&P9L for Christmas. I've recently noticed shooting matches that when I do a tactical reload (IDPA) or any reload with a round in the pipe, the gun jumps out of battery. It only moves about and 1/8 of an inch, but enough to take the gun out of battery. I can bump the slide forward into battery. I've been talking to my dad about it (who also shoots a M&P), and we both think the recoil spring is weak. The factory recoil spring was changed to an aftermarket one. I'm not sure if I want to take it back to a factory spring. Does anyone make recoil springs for M&Ps? If so, what is the best poundage for a recoil spring? If you need to know I shoot Winchester white box ammo and slightly lower charged ammo, that still makes power factor
