The accurate 43-300N is also a highly recommended bullet mold for the 1:38 AND 1:20 twist Marlins.

It is essentially a duplicate of the Mountain Molds (no longer in business) bullet detailed in Glen's article on the 444 marlin here (complete with Rev 2 reduced diameter front drive band):
http://www.lasc.us/Fryxell444Marlin.htm

I ordered one up, but haven't yet had a chance to cast any or test them. I have a 1:38 and a 1:20 444, and intend to test them out in both at some point when I get a bit of time! I agree though, short nose is a requirement. A long bullet like that originally pictured probably won't allow being seated to the crimp groove without jamming up the action due to being too long of a COL.

Yep.