Quote Originally Posted by mapper View Post
Ok, mike..
Can you stabilize a 77 gr? (Sierra says 1:8 twist) some say it will work in a 9 twist, others say no.
If so, I'll swap some sierra match king 77 gr, that can be loaded to mag length.
I've used the 77 SMK's in a 1:9 16" mid length upper loaded to fit a mag and they shot great out to 250 or so. I never tried them farther out. Trust Sierra when they say that they are not suitable for game. They do not expand, tumble or fragment. They just punch a tiny clean hole.