05-27-2014, 12:34 AM
If i remember right the Grendel use's the 220 russian as the base case dia. which is the same as the 7.62 x 39 and 6mm ppc the 22ppc. So if the rifle company made a ppc gun you can do a barrel swap and have a grendel. If i remember right or someone will correct me if i'm off .
