My son didn't have a problem shooting an Elk at about 80 or 90 yards with a Rem 700 Synthetic Youth model in 308 and peep sights. Short barrel, one shot, mmm good.
Peep sights should be in a class of their own. I suffer from astigmatism, and stopping down the field of view really helps me get a clean focus on the front sight. With buckhorn sights I'm only good for half the distance, about 70 yards.
With that short of a barrel the bullet will go subsonic sooner, thus the bullet will move about in the transition ... so it is not a palma rifle, but you know that. Other than that, it is up to you and your skill sets for most reasonable ranges I am sure...
Depends on your eyes and what/where/when you hunt. My young eyes didn't need sights under old spike rules, but old eyes and new antler restriction make it necessary to see brow tines. I stuck with sights on my 7600 35 Whelen because bear don't have brow tines. Last half hour of the day in heavy cover the only thing I could truly see was the glow of the sights. Best brush gun is one that misses the brush. Low power light gathering scope is going on the Whelen soon.