I've got 2. One gets most of the use, a M700 with a Shilen bbl, built by Precision Barrel Work down in Texas.
I've got 271 rounds through it, and it was lightly used when I got it. If I'm having a good day, I can shoot at or sub 1/2 moa with it. It sits in B&C stock with the aluminum bed.
The other is an XTR M70. It is built on a long action with the magazine block installed for the Roberts length cartridge. I've only put 40 rounds through it...just too nice a rifle to "wear" out. Though I have been meaning to put a scope on it and do some load development.
Ruger #1s are nice rifles, but those new M70s are really nice as well. With the machining, new MOA trigger, and the claw extractor, that would be something to look at. Hard.
I figure I'll get one before too long myself.
Looking through a bit of load data, mine shoots 100, 115, gr bullets types really well. Using H414, Rl19, IMR4831. The Roberts really shines when you reload for it.