I have seen tests online for Winchester PDX1 rifle rounds i.e. .308 and .223 but they also make a 7.62x39 round. I have not been able to find a good ballistics gel test online for this round. The other rifle rounds in this line seem to perform quite well in terms of FBI standards for penetration. This one seems like it should but I haven't seen any evidence. Seems like it would be the best round to load into your AK mags if you plan on using it for defensive purposes. After all, most FMJ rounds in this caliber penetrate like 30 inches in ballistic gel and JHP and soft point rounds go well over 20, which is not at all good for an urban setting. We can debate all day whether this round is good for home defense, or whether any modern sporting rifle should be used for home defense but that is not the intended topic in this thread. Please try to stay on topic.