Any 30/30 load has better velocity, energy, and trajectory than any 44 magnum load which looks good on paper. But in my actual field experiance hunting Wild Boar with both rounds over the past 30 years favors the 44 mag. I have never had to shoot a Wild Boar more than once with my 44 mag or had to track it, but with identical shot placement at similar ranges Wild Boars shot with the 30/30 have at several instances needed to be tracked with following finishing shots needed. I feel the Taylor Knock-out value more accurately reflects the power of the .44 mag versus the 30/30. I've owned, and hunted with both, and feel they are both great rounds especially for hunting the woods but i'll always grab my 94 Marlin 44 mag when I it's pigs i'm after. Here's a comparison of figures for both:
30/30 150 grain x 2390 = fpe 1902, tko 15 @muzzle, fpe 1356, tko 13 @ 100yds
30/30 170 grain x 2200 = fpe 1827, tko 16 @muzzle, fpe 1355, tko 14 @ 100yds
44Mag 240 grain x 1760 = fpe 1650, tko 25 @muzzle, fpe 1015, tko 20 @ 100yds