I'm sure you can work magic with 10mm hand loads, but I've always read that the majority of 10mm factory ammo today is pretty anemic and really no more powerful than .40.
That's one downside. Most of the big ammo producers are still making FBI 10mm lite loads which is what the .40 S&W is based on.
I don't understand it. Once they came out with .40, everyone should have gone back to making their loads like the original full powered Norma loads.
Winchester Silvertips aren't too bad, but for full powered 10mm ammo, you make it yourself or buy it from one of the smaller ammo companies.