My answer to that question was to buy a 9 twist Hawkeye in 223. It's a sweet little rifle.
I would really like a M70 CRF fwt 223 as well!
How does your Ruger shoot? Good groups? That could be an option
Have one that a friend borrowed for awhile and had Barnes 62s going +/- an inch at 100. Heavy for such a little gun and balance is off. Their bottom metal contributes more than a little.
Considered trying to find a lighter floor plate assembly, but haven't. Nice rifle for the most part.