Unless you have a love of Lever guns there is little reason to use a 30-30
+s for 30-30
Works in Lever guns
Ammo is easy to acquire
Range medium (200 yards or so with most lever guns)
-s for 30-30
Few actions other than lever or break open
Rimmed (this is not an issue in lever but can be if it was a box mag)
RN (round nose) bullets dominate as most are tube fed a pointed bullet is not a good idea (hornady does make one special)
Few variations on loading (bullet shape / weight / power)
+s for 30-06
Actions of every type Bolt, Break open and Semi auto
Rimless - better feeding from box mags\
Ammo is ubiquitous in many more loadings than 30-30
Spitzer Bullet in Hollow Point, Soft Point and FMJ
Medium to Long Range (600 yards)
Bolt Guns are far easier to scope than a Lever * no mater what caliber
- 30-06
More recoil
Few loading for a lever gun
Longer action than newer center fire cartridges
There are many other cartridges to choose from but for easy of ammo in .30 you really have picked 2 of the best the other is .308 Win which is really little more than a 12mm shorter 30-06
“Bolt Guns are far easier to scope than a Lever * no mater what caliber”
Marlin Leverguns are just as easy to scope as a bolt gun.
I’ve got a weird one for you. At some point the Navy re-chambered some M-1s in 7.62 NATO. Not sure when or why, but I was awarded one while I was in the Navy. It used the same clips as an M-1 in 30-06 and has a little plastic horseshoe at the front of the magazine. You can really tell the difference in recoil. The .308 is a lot lighter.