Originally Posted by
MDriskill
I'm a fan of both rifles, but will focus on the 27 since no one else is!
In "out of the box" form the 27 is typically a few fps slower than the HW 50, but the diff is negligible. It is lighter than the 50 and has a much more slender stock.
Outstanding design features of the Diana 27 include an extremely high-quality spring and leather piston seal, a superbly designed adjustable-tension breech, the simple and strong ball-sear trigger, an easily-replaced O-ring breech seal, and absolutely outstanding open sights. The quirkiest detail may be how close the trigger blade is to the grip, but the simple rounded shape of the latter helps the hand adjust comfortably.
Much has been written about the horrors of dismantling the classic ball-sear trigger. In fact it is very simple, but does require a spring compressor, and a little fore-knowledge is helpful too! Really you just snug up the compressor, knock the two cross pins out, and gently let the stuff out to get it apart. Stack the bits back up and shove back in when done.
The trigger in these guns is really excellent, and an ingeniously simple design. It is adjustable, however only for the second-stage let-off point; there is no pull weight adjuster per se. That being said it is very light, crisp, and reliable when correctly up.
All in all a delightful little rifle. I have one made in 1981 that has never been apart, and is as powerful and accurate as when I got it--but shoots a lot smoother now.