I bought one a while back to shoot in Plainsman side matches, and I've been pleased with it.
Mine came with a pretty stiff hammer pull, which I was able to alleviate with this relatively simple spring modification. https://www.go2gbo.com/threads/henry-h015-single-shot-rifles-trigger-hammer-fix.385560/.
Unlike that of an H&R Handi-rifle, the Henry's hammer cannot be cocked while the breach is open due to an interlock. I have not run across anything on the web or otherwise showing how to disable the interlock.
Mine shucks spent cases very nicely, and the iron sights allow POA