I think 220gr bullets in a 10mm is a malfunction waiting to happen. If you want to tinker and set up a 1911 or whatever to run on them, that's fine, but I'm guessing 220gr ammo was never included in striker fired production guns' testing regimes. Talk about boutique ammo, this is it. And like someone else said, there are other calibers that push this amount of lead around a lot safer and more efficiently.
