Two weeks ago I ordered Bullet Penetration by Duncan MacPherson. I have read this interesting book two times. This book stresses the importance of having penetration in the area of 13 to 16 inches. Duncan claims that when using the heaviest weight in each caliber (depending on type & brand of ammo) you should achieve this desired penetration. Duncan claims that some situations you may need more then the FBI recommended 12 inches of penetration--so if you choose ammo that penetrates say 14 inches and you have to shoot through an arm to get a vital organ shot that you will at least get the minimum of 12 inches. Duncan also claims that a longer permanent wound channel creates more tissue damage.
Do any shooters have any comments on this information by Duncan MacPherson?
I'm starting to wonder if I'm taking his book too seriously --any thoughts on this information?