I’ve put a lot of 40s/w rounds down range through my G20 factory barrel as well as a Lone Wolf barrel. Never had a single issue. I’ll continue to use 40 for target practice since I have a lot of it.
If you have a Lone Wolf .40 S&W conversion barrel for it, might as well use it. Even if the stress on the extractor hook is only slight, might as well save it even that much stress.
