My bro in law had one of those 25-06. Pretty cool.. Yup, should have said 7.62.
.25-06 is a worth a second look, for sure. Slightly lighter projectiles than .270 WIN (which is the other most common necked down .30-06 (or .30-'03) Springfield, but enough to retain favorable, effective terminal ballistics, the 'getting there' being half the fun...
BUT when talking about the original AK-47 round, it's best identified as 7.62x39. That last is more what you should have said.
.308 is also "7.62".
7.62x51 Nato and .308 WIN, are all but entirely interchangeable. Most any sporting rifle will safely and reliably fire any of the various 7.62 NATO rounds.
There is a 7.62x54R, also.
Please forgive my stridency, but offhandedly referring to the Soviet Kalashnikov round as "Seven six two" is something I hear a lot of young guys do. I serious doubt very many Americans, when in Vietnam in the 1960's, and early to mid-1970's spoke about gook ammo as 7.62, since 7.62 NATO went into M-60's and M-14's...
.30-06 is 7.62 also (7.62x64) although most always referred to as .30-06 Springfield, or just "ought-six".
Please, don't refer to the AK round as seven-six-two. It can be misleading to children. (I hear 'em say it!)