My 2 cents, You'd probobly be well served by any 357 mag for yotes. Hogs on the other hand are notoriously meaner and harder to drop. For those critters I'd vote a 44 mag with a 4"-6" barrel. ( A 41 mag or even 45 LC would be OK too but the ammo costs are going to be considerably higher and more limited.) As for size, 357's can be had well below 20 oz in the high end, short bareled scandium S&W's. However, your average steel medium framed 357 isn't going to weigh but 10-15% less than a simularly built 42-46 oz , 44 mag. As mentioned , S&W does make a lighter 44 mag but it's not cheap.
hth