Thanks em,
My rem lite varmint has a 1:12 TWIST and doesn't stabilize 60gr anythings.  Good luck on your slam.  I finished mine a few years ago.  Still trying to finish the exotics slam (fallow, sika, axis, red deer, aoudad, corsican, mouflon, catalina, black buck, ibex)....still need a aoudad.
GL!