LOL You must be joking especially the new HW's with the star breech and the screw on lock up bits.
The 34 has one of the best breech and barrel hinge set ups of all the break barrels, (the most robust also)
Metal to Metal cylinder to breech barrel stop and seal,
Twin spring ball catch,
Properly machined block to take bearing washers and a hardened steel sleeve for the barrel hinge bolt.
And even the new 34's once tuned like SFS does (Watch the video) will easy match or better a New HW
Meh! You'd stick up for them whatever, ain't exactly compelling evidence is it?
With the one's from the last few years I think it's simply a combination of the breech seal and ball detent preventing the angled breech from seating the same every time.
My ignore list: <Hidden information>
As a current owner of a 280, I'd say if you can't do basic tuning, I'd leave alone, if you can I'd buy one in full length and .22. Good bits...trigger, stock, build quality. Bad bits....crap/cheap open sights, plastic cylinder end cap and trigger guard. As a 99 alternative yes, but a 99 beater probably not.
I have posted some evidence with the pictures that I have posted but have not seen any of your pictures that show any difference, also I have admitted that the new ones might not be the same as the old ones but have you seen the evidence from the SFS 34 video and that is a new one.
The angled breech can be awkward but once adjusted its the best, and more robust