The 308 and 7-08 M48's seem to be pretty scarce. Most of the production runs look to be 6 and 6.5 CM's, with a few 22 Noslers sprinkled in.
My original plan was to pick up a 308 Win M48 when I switched over from Encores. I could not locate one for sale. I ended up with a 6.5 CM for deer then a 22 Nosler for mainly paper punching.
I may still own a 308 one day. The last nearly 8 months I have spent working on an XP100 build, and I have not been looking at Nosler M48's.
Both of my M48's are tack drivers. I am sure that your 308 shoots very well also. Enjoy working with it.
What Bullets and powders are you working with?
I was using 150 Speer SP's in my 7.62x54R Encore. Probably not the best for long range, but worked fine on deer.
Bob R