It penetrated 2 jugs for a BG penetration of 6 inches.

Only half the penetration recommended by the FBI.

The jacket and other pieces were in the second jug.

How about the .40 S&W out of my Glock 22.

It penetrated into the second jug and broke into pieces.

Then a round of the .45 ACP out of a 1911.

It penetrated 2 jugs with a piece of lead making it into the third jug.

Lessons learned:
1. As is usual with light/fast bullets, these rounds made spectacular explosions on the first water jug. But then they fail to penetrate much farther.

Might these rounds work? Sure, they might.

But why trust "might", when bullets are available that will meet the 12 inch minimum penetration standard?

2. Recoil was indeed light, due to light bullets.

3. All rounds, except for the .32 ACP, functioned just fine.

4. If I didn't know much about bullet performance, the violent explosive effects on the first water jug would be very impressive. But I know that penetration is also required and these rounds do not meet the 12 inch minimum penetration standard.

5. It's hot on a July morning down in southeast Texas. But it's still fun to shoot stuff.

Thanks to my friend Aim4myhead for the ammo to test, and thanks to Tman for the water-hauling help.