Originally Posted by
sunray
All new firearms require a trigger job due to frivolous U.S. law suits. This doesn't necessarily mean a new trigger. Just changing the springs will help. Wolf Springs, Stateside(bit of a nuisance, but doable.), carries M&P 4 pound(factory is 5 lbs.) striker springs.
Add the W's. .gunsprings.com/Semi-Auto%20Pistols/SMITH%20%26%20WESSON/M%26P%20SERIES%20-%209mm,%20%20.40/.357%20/cID1/mID58/dID262
You really should try a box of as many brands and bullet weights as you can to find the ammo your pistol a shoots best. Or get into reloading your self.
Buying ammo on-line gets expensive quickly and any cost savings will be negated by shipping costs. Shipping costs are not set by the seller. They're set by the carrier with lots of government interference.