I get 38 Super brass of most species due to lost brass on my range & working as a RO at bigger matches. (In USPSA,,, at most State & regional matches are lost brass matches. The RO's get to pick up the lost brass as part of a reward for working.)
I get a few hundred each of Super, Super Comp & +P annually & let others with guns enjoy the brass.
But since the USPSA started allowing 9mm in race guns & pushing the power level to "Major" power factor,,, many have switched to that. But while they do it all the time,,, pushing the power level in 9mm is higher,,, most Factory stuff isn't quite to the same level. Many normal factory produced 9mm handguns are not quite strong enough to handle the hotter loads. I often worry about some of the hotter competition ammo being put into a weaker handgun.
On a side note,,, we had a race gun shooter who accidentally loaded a 380 Auto case with his 9mm load. I have the single round,, as it was discovered before he actually shot it.
But in the 38 Super arena,,, there are several out there.