I have owned 4 rossis. One stainless 357 24" in octagonal, 2 x 357 20" blued and a stainless 44 mag 20". The 24" octagonal in 357 was a good shooter but they are quite muzzle heavy. Original octagonal barrels like winchesters had a degree of taper to them, Rossis are almost paralell. The 357 is heavier than the 44 because they have the same muzzle diametre but a smaller hole, aka more weight in steel. Handle the gun before buying is my advice, some people arent bothered by it.
They can all be rough out of the box, about 1/4 of a guns cost goes into final fit, polish etc and this is how Rossi keeps it prices down. Usually any issues can be smoothed out if you are DIY guy or by any competent smith. Of my guns one needed no work at all. One needed quite a bit, load gate was sharp and scraping brass( and thumb!) extractor was nicking rims, a bevel in the mag tube was shaving the side of bullet noses and the magazine spring was so tight it was hard to load. Another needed minor smoothing and one I had smoothed anyway. Note, none of it effected the guns ability to fire fast and accurately and once smoothed they ran nicely.
barrels are all 1:30 twist which handles all standard bullet weights at normal speeds but running low speed loads and long bullets( say 180grains+) you may have issues stabilising. I found with subsonic loads 158 grains was as heavy a bullet as would shoot well.
An advantage of Rossis is they are arguably the strongest of all the 1892 actions, 1892's being the strongest of all pistol calibre actions. Not that I would suggest doing it, but some people have run them all the way to 50,000 PSI.
As to whether Rossi are better or worse at feeding cases, all lever actions vary as to what loaded length they like to feed. For example some like 357 length but dont feed short 38 specials as well. All my guns fed any length 357 and 38 specials no problems. The 44mag also feeds 44 specials no problem. Not sure if I got lucky ...but 4 for 4 is a pretty good statistic.
I guarantee if you started a thread on what action feeds both 38 and 357 best you will get equal votes between Rossis, brownings, Win/miroku, 1873 and 1894 actions! Im serious, I have seen the threads. It always runs the same way, everyone logs on saying they heard one model feeds the best... but some other one dont : )