Not knowing the terrain---whether 300 yard shots across farmfields are normal or a 75 yard shot in thick woods is considered a long shot---its kinda hard to recommend. But heres my 2 cents
I heard the 7400 was being updated, and I would have to study the updates before recommending becaues i've owned the 7400 in the past and would NOT recommend it. This is my personal experience, and I know alot of Michigan guys that love theirs. I do like the 7600 series and can run the pump action almost as fast as the auto with about the same accuracy---and the 7600 is utterly reliable, IMO.
The mini 30 would be a good choice if you choose a GOOD soft point (Rem. 123 grainers)and keep the distances within reason.
I've owned the 44 deerfield also, reliable and accurate UNTIL you remove it from the stock for cleaning (you have to to clean the gas system)---then when you reassemble, you have to RE-ZERO! The forward stock band is the problem, it never tensions down the same--so there is always minor variations in your zero---even if you mark and count your turns of the screw to retighten to the exact same place, didn't matter, it would be 5-6" off at 100 yards.
This is of course with a scope--with open sights I imagine the variance is less, but still there.
I've heard of others having this same problem and others say theirs returns very close to zero.
I would NOT personally use the 30 carbine round on Wisconsin whitetail.
anyways, my 2 cents