I will come out and say the auto-cocking revolver that uses exposed spiral flutes on the cylinder to cycle (there's like three different iterations that have been tried, in addition to the Webley) is a pretty obvious design dead-end. By definition expensive, sensitive, and inefficient in requiring a really fat cylinder diameter.
Sort of in the same camp is the toggle-action concept, since it's always been obvious that no user wants a bunch of mechanical junk flying around in their line of sight.
Bolt-action to semi-auto conversions like the Charlton Automatic and others, and for the same reason ("Oh joy! A bolt carrier racing towards my eyeball! Let's shoot it again!"
)
-----------------------------------------
Lastly, one that I got to explore (painlessly
) first hand. The manual of arms of the Hakim/Ljungman rifle is full, unadulterated, mo-ron. Push the dust cover forward to snag the bolt carrier, completely exposing the guts of the lower to debris in the process. Pull the whole mess to the rear locking them back, with no way to manually drop the bolt on an empty mag (thus tempting you to press on the follower with your finger...). Extremely stiff recoil spring, guillotine-like edges on the bolt carrier, and hole-punch of a DI gas tube & BCG socket. A gentle pull
back on the charging...wire
...er, handle, and the bolt-guillotine is released forward with no way to stop it. After much timid/terrified fiddling, I finally got the thing to drop, and it was
the most terrifying thing I've ever experienced with firearms that didn't involve the presence of live ammunition or the threat thereof.
SHUNK! "Gah! Holy crap!" I nearly dropped the rifle right there
. As well as a brick or two (of 22LR --I swear!)
Basically, if you try to let the bolt down manually on an empty mag using the handle,
like every other rifle design in freakin' existence, you will have a 1/4" diameter by 1/4" deep plug of flesh punched out of your hand. If your bolt release is worn/broken, simply charging the clip as required may accomplish this feat. Oh, and you can't drop the bolt at all if the rifle is on safe (or whatever those characters mean) so closed/dust-covered on an empty/safe chamber requires removing the mag via the obnoxious-ass mag release (fold it down, then pull it back; so simple it can't be done with
either hand near the trigger!)
Having seen one in person at last and
still being shocked at what a terrible arm it is despite knowing most of these features in advance, I have to say I've lost a lot of respect for Swedish design. I'd
love to see the cartoon-manual they gave the Egyptians for these babies. It honestly is enough to shake my faith in their Mausers (I'll get a BRNO VZ24, instead
). At least the Hakim was fairly light for what it was, a big 'ol clip fed 8mm semi-auto, and had a good (loud) muzzle brake so that lightness wasn't itself a design flaw, too.
TCB