I have had M65s in 6.5X55, 7MM Rem. mag, 300 WM, and 338 WM, all excellent, very well made rifles superbly accurate.
The only downside is that they are a tad heavy.
Now I'm down to a Mod.55 heavy barrel in 308 and its wicked accurate in spite of a very high round count.
All in all, they are an awesome rifle even after not being produced for many years.