I have to agree. During my time in the German Army (I was a Panzergrenadier) I was drilled on the G3 Assault rifle. It fires the 7,62 × 51 mm NATO ammunition. I still remember how our instructors demonstrated how you could shoot through a 30 cm thick piece of oak. Of course in close quarters. They also said to us that we shouldnt feel save behind trees even behind house walls you gotta be cautious.