.35-30 is the more common designation. Usually a .30-30 case necked up to .358 with no other changes. Very accurate with cast bullets and a decent midrange black powder round.

Main use was to rebore shot out .30-30 and .32 Win Spl. bores, but sometimes perfectly good Rem 788s got the treatment because somebody liked .358 bore for cast bullet shooting. Less commonly there is .35-30 Ackley Improved which becomes a sort of rimmed .35 Remington.

Both of these were vastly more practical when almost no weekend deer hunter ever reloaded and you could find once-fired thutty-thutty cases everywhere. Not true anymore, in my experience.