04-04-2011, 05:29 AM
I was just wondering..... since 7.63x39 can be necked down to a 6.5 grendel case could the 6.5 grendel with a 123 gr bullet do the same damage as the mother case. Non reinforced wall with standard building cement brick. I'll do a search on youtube and see what I come up with. Thanks for everyones input.
