So get a 30/30 and have your levergun. If you're a good shot it will do what a .308 will do (inside 150 yds) those 170 gr flatpoints can be very accurate!
Or if you just can't live with a 30/30 and want one of the coolest things ever in a levergun...get a 45/70 !!
It must be the most versatile lever rifle ever made. Long range, short range, small game, large game, nostalgic, high cool factor, easily reloadable, not finiky, blackpowder, smokeless, lead (bullets!), do everything rifle.
I like my 45/70. Can you tell?