I'm not new to casting but here's an example of what to expect when others load for you:
Friend of mine I've done a lot of work on his guns for, loaded me up 99 357Mags (why only 99 and not 100 I still haven't figured out). They had a 110gr HP "J"'s and the guy insisted they had 9.2gr of Unique.
I pulled all the "J"'s and found that the charge varied from 5gr to 12gr, and there were many that had "NO" powder in them at all. The crimping was also in question because what initially made me wary of these was two of them I could push the "J" back into the case with minimal pressure.
Found out the guy was using a Lee Loader and the scoop Kit that Lee offers.
The guy honestly thought he was doing a good job, but he had almost "ZERO" experience. I shoot Rugers and they most likely would have handled the 12gr loads, but the squib loads (ones with only a primer and NO powder) would have caused problems.
SO, if in the future one of your buds load some ammo for you, PLEASE be sure that YOU know that THEY know how to load properly.
Lesson well learned, but at least I ended up with 99 primed 357 cases.