Any reloading data for a Ruger no. 1 in 416 Rem. Mag with ELR bullets ?

[bfoosh006]

As the title says...

I can't seem to find any data concerning a setup like this. I realize this is a uncommon setup, but I am wits end looking online for info.
So I thought I'd ask the collective minds here.

I have a friend that has spare time on his hands, and has caught the ELR bug.
Currently he is pursuing Barnes projectiles... however I mentioned there are considerably sleeker .416 bullets available.

Any help is greatly appreciated.

 

[Maliclipse]

Your issue is going to be twist in that rifle. All the 416 cal ELR bullets are going to need a twist faster than what the standard was on those guns.