Assuming your Marlin is a lever-action... Hornaday came out with a new tip bullet that is pointed just for tubular magazine rifles. It really extended the range on my Marlin 336 30-30. It's called the Leverevolution. It delivers a much higher ballistic coefficient result than the older round nose tip bullets. It's a spitzer bullet with a new elastomer flex tip on for better ballistic performance and allows pointed bullet to pointed bullet alignment in the tubular magazine. Might be worth a look and I recommend it.
iSnipe