I purchased a bunch of reloaded 9mm (Luger) ammo (115gr FMJ bullets) at a gun show in Sacramento, CA years ago. It was from a commercial reloading business in the area. The company had a good reputation. I have fired some of this ammo from a Glock 17 with no problems. I now have a S&W M&P Shield, and I want to use this ammo for practice in this pistol.
Out of curiousity, I weighed some of the loaded rounds. There are, of course discrepancies in total weight. What I have weighed so far (15 random samples) varies from 180.5gr to 181.9gr. I'm sure this ammo was loaded on a commercial type reloading machine and I don't expect each round to be the exact same weight. Considering I am weighing finished rounds and that weight of brass, bullets, and primers all may vary (as well as powder charge of course), is this an acceptable variance in weight? Any thoughts from the group is appreciated.
Thx, Brad