I am looking for 357 SIG and 45 ACP ammo with good penetration. I see the Lehigh Xtreme Penetrator and Hard Cast Flat Nose. Does anyone have any experience with them?

Not an answer but I am looking for what 357sig fmj rounds are loaded to the original specs. Basically, I'm looking for practice ammo that will give me 1425+ fps out of my Glock 31 for an upcoming class.

I would like to see how the round works in/out of cars when not watered down.

Ok. Nevermind.
I see Underwood has a 1475fps fmj selection.

Underwood is a good choice.

Consider going on youtube and looking up tnoutdoors9 channel. He has the most extensive 357 sig tests out there.