testtest

penetration predictions

benstt

Professional
Founding Member
My friend and I are going to do some testing on 140gr extreme penetrator rounds in .357 mag and 10mm. We're looking at a case of printer paper, a 3/8 inch plate of 1018 steel, pine 2x4s, and some other undetermined materials as well. What are your predictions? Which round penetrates deeper through the paper? How many 2x4s does it take to stop each one? Does either of them get through the steel? What other materials would make an interesting test subject? The handguns are a 6" 686 and a 5.25 XDm. I'm undecided about chronoing the rounds, since I only have 20 of each.
 
I've done that with textbooks before. I found the rounds went farther through the wet paper that dry paper. Probably something about having to continually impart a new transfer of energy to each sheet of paper as opposed to having the water in filling the pages providing better transfer of energy through the entire mass of paper. Or because the water breaks down the paper a little and decreases resistance.
 
That is a good match up for sure. I'm interested in the outcome. I'm leaning to the 357 side in this match up. I'd love to own a 10mm, just hasn't happened yet.
 
Yep I used to soak old phone books in water and load them into a paper box end to end. They worked wonderful to get HP to expand perfectly. Dry phone books just made hollow points clog and become FMJ like.....

Hollow points need liquid to work...liquid doesn’t compress, fills the cavity and presses out on the inner walls, causing expansion.
 
I've done that with textbooks before. I found the rounds went farther through the wet paper that dry paper. Probably something about having to continually impart a new transfer of energy to each sheet of paper as opposed to having the water in filling the pages providing better transfer of energy through the entire mass of paper. Or because the water breaks down the paper a little and decreases resistance.
Textbook? What's a textbook?
 
Back
Top