Taylor I'm with you on the 168 TTSX / 308. It certainly is a penetrator, though I've only used the 165 TSX variety. I don't have a lot of experience with mono's, but enough to convince me the shrapnel effect of copper/lead bullets kill quicker, and I've taken enough elk with a variety of 165 bullets with the 308 to know they will usually penetrate through an elk. I get the benefits of leadless meat, but I'm still of the opinion copper hulls with lead cores kill quicker.