Not factory.But I have been using 220gr RN for elk in my .06 for many years and will continue to do so,Don't plan to change just because some yahoo on the fire says you shouldn't.They are great for in the thick timber at slow speeds and will not ruin a lot of meat like 165's or so will. When I hunt out in more open countryI use 180 gr partitions or even (SHUDDER) 180ngr Game kings
