If you want .327 in a 3" you'll likely have to go with an SP101. As far as I know Ruger doesn't offer a 3" .327 LCR.
Printable View
The other reason I recommend 38 Special guns over 357 Mag is that if we accept all we're going to be shorting is 38 Special, it makes more sense to get the shorter cylinder, which is less freebore to jump. I know that it doesn't really make the guns that much more accurate, but in my stupid head it's worth it. Plus, you can zero the adjustable sights on your 3 inch 38 Special gun for 148 grain wadcutters and have a carry gun that's actually pleasant to shoot.
I'm thinking I might be better off getting a pair of magna grips for my M66-2 and calling it good for now.