I am also interested. I have a 30" 300RUM 1-8.3 twist Rock Creek barrel on order for Kirby to chamber. I just got a heck of a deal on a 500 pack of the 240 SMK's--$150!! So I guess I'll be doing a bit of shooting with them. I do plan on using US869 as I will also be trying the 265 and 290 gr Wildcat ULD RBBT's.
Thanks,
Sam