A potential problem with loading a spitzer type bullet in a 30-30 is that the bullet is usually designed to perform at a higher velocity. When you factor in the low operating pressure of the 30-30 and the short barrel of the contender, a standard 170gr 30-30 design bullet would probably give the best results.

OK...let' s put it to a vote...
Pick one load, to be used out of a 14" Contender for deer/hogs out to 100yds.
[ul][*] 30-30[*] .44 mag[*] 7.62x39
[/ul]

44 Mag is probably the best bet. 7.62X39mm and 30-30 Win are not great out of a rifle, much less a handgun.

I' d go with the .44Mag in that length BBl just because you are in the lenght range most powders for it were designed to burn in. I know there is pistol data for the other 2 rounds but there should be more options in loading for the .44Mag.

id go with the 44mag out of those choices. but id take the 35rem i think over them all