My primary concern is; Did they fix the bolt extraction timing issue? If not, it's a no-go for me.
Do they offer a faster twist in the .22's and the .243? Given the popularity of heavier bullets and monos where lead is verboten, for those I think it would be wise to go to a faster twist.
I could see a 1:9" twist for a .22-250, allowing the 50gr family as well as up to the 80's to be functional.
My Ruger Predator in .243 shoots 55's through the 107's just fine with its 1:8" twist.
Just my $0.02
Ed
Ed is correct, the primary extraction is non existant on the new RR receivers. The 5R is a marketing thing. Frank Green, Bartlein, has stated such on the net. If people want it, you make it.