I would much rather shoot my cast reloads out of any of my guns than shoot TulAmmo through anything but my AK/SKS. Make sure the bullet is "Hard Cast" and not swaged. Swaged lead is too soft for 9mm. A good hard cast bullet should not cause any undue leading of your Sigma
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball