444 all day. There ain't no flies on the Marlin 444.
The "flies" I can see are the Marlin's 1:38 twist and micro-groove barrel. I solved that problem with a Winchester 94 BB "Timber Carbine" in .444. Can load it hotter than a Marlin, and it's size compares to a 10/22 Ruger. Can even mount a scope to it (it is drilled & tapped), due to it being an angle eject.
