In the real world... 12” isn’t enough
After poorly placed shots, the most common “failure“ I’ve noted over the decades...
Poor penetration
I said "at least" 12''
The Federal link I included in my post.
Lets compare two popular heavy bullet options in 9mm & 40 Gold Dot and HST:
Heavy Clothing:
9mm 147 Gold Dot - 14.9'' / .57
9mm 147 HST - 12.5'' / .69
40 S&W 180 Gold Dot - 13.2'' / .70
40 S&W 180 HST - 12.5'' / .80
Steel:
9mm 147 Gold Dot - 19.4'' / .42
9mm 147 HST - 17.5'' / .43
40 S&W 180 Gold Dot - 19.6'' / .50
40 S&W 180 HST - 11'' / .45
Auto glass:
9mm 147 Gold Dot - 12.9'' / .56
9mm 147 HST - 11'' / .68
40 S&W 180 Gold Dot - 12.7'' / .61
40 S&W 180 HST - 14'' / .62
180 gr. Gold Dots (in my Glock 23 & 35
) penetrate at least 12'' through various barriers and expand, tested by the manufacturer.
No way I'm carrying FMJ, as long as I have HP that performs like that.