The repros have no history, and are still fussy.
No, it goes way beyongd "fussy",.... they're WEAKER,....that stupid H&R locking cam set screw is an accident looking for places to happen, and faces to hurt.
Dunno' how many here have stripped and serviced 47 of em', in one "Bang" so to speak,.......I have.
"Pretty junk" is all I have to say about them. Their overcut chambers and overly deep rim recesses just exacerbate an already potentially catastrophic situation.
As for the originals,...they will drive TACKS in a preternaturally accurate fashion, ....properly loaded for.
With the action PROPERLY set up, and with PROPERLY fire formed brass, and PROPERLY cast / lubricated bullets, one can consider the block pin a feature that keeps the block from getting lost,...and not get too concerned about blow ups.
BUT,.....you get stupid with a trapdoor, it WILL get stupid , right back in your face.
GTC