Pentration depends on the bullet being used . At a Linebaugh seminar my 416 Rigby shootinging 410 rounds nose solids Federal Factory load at about 2386 FPSpenetrated 46" of wet pac. My 500 Linebaugh revolver shooting a hard cast WLFN flat ponit at 1091 FPS penetrated 50"
There are many many variable that dictate penetration
That "research" has been around for some time. Take a look:
http://470mbogo.com/PenetrationComparison.html
