Just about any calibur, properly placed, will do the job.
Funny story, during my ccl class, the instructor warned the women about shooting at the crotch of the man shape target. They did it anyway.
Hey Tex where are you from in TX,I lived in Del Rio from ‘93-’96?
The ladies weren’t aiming at the crotch of the target. They were mashing the trigger as hard as they can. Hand them a camera and they will do the same thing. I’m teaching a lady now and she and I are going to a NRA’s Women on Target class.
Her hits are finally getting higher but it’s been months of shooting. The solution was to have her try to hit clay birds on a dirt bank at 70 yards away. Besides that, she never listened to anyone or their advice. She constantly did it “her way”. Patience, patience.
In my CHL class, there were two different women that said they would aim low if it was an attempted rape. One of them said she would put a round there after the guy was already down. I hope she has a good lawyer....