It is purely there not to "assist" you as much more to actually STOP a user from operating it with there head up butt by being to jerky and quick on the handle.
These things are just a gas shock like your liftgate/hood supports on your vehicle. Over time they wear out and you have to prop open the liftgate or hood. I prefer the loader without them. But I am pretty sure you can run the newer ones without the gas shock??
Installed one on my 366. The cylinder is continually wearing out. It does smooth out the cycling, when it works. I no longer use mine. I guess I would advise against spending the money. It works as advertised, but not very long.
I bought one, hooked it up, loaded two boxes of shells, took it off and sent it back for a refund - which Hornady gave, no questions asked. Great service.
It's mostly something to entice the Mec crowd into a 366, but I can load way faster without it.
If you're to quick on the upstroke, the plate advances too fast and the primer doesn't fully drop and binds ups in the plate - and yes, shot will go everywhere. but within the first flat of shells you'll develop a little hitch in your stroke where you'll pause a split second while that primer drops into the bottom of the die and then everything is smooth as silk...