I shot mine a good deal, seems IMR 4198 from memory, and yes blast would be less with a Herrett, and if I wanted to spit 125-130s again, a 300 Whisper just might be the ticket. None the less, back then LOADS of free brass as nobody picked them up at the range.
I did get a 12" 7-30 waters but never fired it, but did shoot a 357 Maximum awhile and it was nice, 12" MT also, the 35 bore might be a tad more efficient and for a deer hunting handgun might be the way to go. Efficient comes to mind.
I.E. my 1894 Marlin spat 158s at 2000-2050 in an 18.5" bbl. Knocking on a 30-30 heels.....a TC in a Maximum just might get real close, the 180 SSP might be the ticket.
I did enjoy the 30/30 for up to 150 yds, then it ran out of gas, but it was simple to load for and once I used a good bit of cheap 125 corelokt bulk bullets.
I'd imagine the blast would bother me more today than back when I was in college......
Again, a Whisper on the 221 Fireball case seems VERY close to 30/30 for light bullets. Lots less blast/bite.
TCUs were always a favorite but you'll possibly split a few case heads at times and once I had a case stuck in the bbl when the head severed off. Flat, accurate, and less recoil with 6.5 and 7 TCU than the 30/30, but no factory ammo. Pros/Cons.
For deer/hog type hunting, I think a 41 mag and the 357s make good sense, simple, effective and moderate recoil, with good punch to 100-150 yds. Under 100 yds the trajectory would not really be an issue IMHO. Longer shots, the 35s likely flatter, and the bottleneck rifle calibers better yet.