Gelatin tests: 9mm DRT 80 gr & .357 mag 158 gr JSP from carbine

[chopinbloc]

9mm DRT 85 gr frangible fired from Glock model 22 with 4.5" Lone Wolf 9mm conversion barrel into calibrated gelatin.

BB: 584.5 fps, 4.7"

Impact velocity: 1,452 fps
Penetration: 11.7"
Retained weight: 14.1 gr
Max expansion: N/A
Min expansion: N/A

I forgot the denim on this shot but I doubt it would have made a lot of difference.





.357 mag Speer 158 gr JSP over 13.0 gr AA9 fired from Rossi M92 carbine into calibrated gelatin.

BB: 584.5 fps, 4.7"

Impact velocity: 1,618 fps
Penetration: 22.6"
Retained weight: 127.8 gr
Max expansion: 0.508"
Min expansion: 0.453"

I also tested this load from the revolver but the shot exited the block. Penetration was greater than 23" and velocity from the 4" Model 13 was 1,002 fps. I intend to increase the powder charge and test this projectile again at a higher velocity.

 

[strambo]

Cool test. The penetration of the frangible surprises me, of course it is only 14 grains so a really small cavity. Looks like the large fragmented wound channel happens just before it would be hitting organs.

That 158g JSP would probably be about perfect at 1800-1900 fps, I think you are on the right track.

 

[hardheart]

Looks like the large fragmented wound channel happens just before it would be hitting organs.

I've wondered about this, because overcoming the elasticity and durability of skin is supposed to equal 4 inches of gelatin penetration, so does anything within the first 4 inches of ballistics gel equal an occurrence immediately beneath the dermis as opposed to halfway into the torso?

 

[chopinbloc]

I'm not sure if there is an exact comparison but nominal penetration for the calibration BB is 2.95"-3.74" @ 590 +/- 15 fps. I don't think a 600 fps BB usually does much more than break the skin for a person. That said, the experts (Dr. Tackler, Dr. Roberts, et al) advise that properly prepared and calibrated gelatin produces "wounds" that are very consistent with those observed in human and porcine tissue.

 

[eldon519]

Perhaps I am overlooking it, but I don't see what brand the 158 gr JSP bullet is?

 

[chopinbloc]

Sorry about that. It's Speer.