Over the last few years, I've picked up several of the Ruger Mark II stainless/ brown laminate sporter rifles. I really like the look of them.

All of them shoot lights out (3/4" or better) at 100yds.

I've been watching for a couple calibers that I'd like to add to the collection specifically 243, 25-06 or 257 roberts, and 260. I know Ruger did these calibers in walnut/ blued but havent found any in the stainless/ laminate.

I contacted Ruger and they were no help at all.
Am I looking for the impossible?