I only have one lever action centerfire rifle, a 336 in .35 Remington I got used in 1978; I love it, deer don't. It's a hunting rifles, not for targets or plinking, so I don't load a lot for it. I got three boxes of Remington ammo for it, 60 rounds and still have most of them.
After shooting most of them up I evened the case lengths and started reloading them. After developing a full power 200 gr. RNCL load I soon had 60 rounds flying at 2,075 +/- fps that would consistently go into 1 1/2" at 100 yards. I love that ugly bullet but Rem has discontinued selling it as a component (I hate Remington). Hornady's 200 gr. RN actually shoots just as well but it sure doesn't expand as well.
Before each season starts, I clean the bore and fire a few rounds to confirm zero and then get one or two deer (one shot each). When I'm about out of ammo I'll refill the empties and keep going. I have now reloaded them maybe ten times each, only sizing with Lee's great little Collet Neck die and their excellent Factory Crimp Die. The still remaining cartridges (I've lost a few of those cases in the woods) in their now ragged ol' green and yellow boxes still feed and chamber slick as a greasy eel; no case has yet needed trimming and none of them have yet split.
I can't see how a .30-30 would be any different but I must be doing something wrong because all of the web experts say not to reload for lever guns exactly the way I always do!