I have a Rossi, not the puma, it's a EMF Hartford, but it's still a Rossi, and no problems feeding (45colt).
Went to the range for a day just before winter hit, my friend had a Puma in 357, it was slick and no problems feeding. Stock, no gunsmith work. (this little carbine was fast and a tack driver)
He got out the marlin (44), no problems, we then shot his his Henry replica, and that was so smooth I could not believe it. Could hardly tell there was ammo in it at all. (45colt)
It's possible to have problems with maybe any brand, hopefully it would be an easy fix, but if I bought something new and it would not feed I'd send it back.
It's also possible if you buy a 357 or 44 mag, maybe it's fussy with 38/44 special ammo, you would have to fix this or have it fixed yourself if you wanted to use the shorter cartridges.
I would just get the lever action that appeals to you and feels best to you, and forget about which brand might be prone to feeding problems. You might not have any problems with either one.
You'll read about problems on the forums more than you'll read about the thousands of people who didn't have any. I am glad I bought the Hartford model myself, nice wood, nice sights, accurate, and I'm kinda partial to the 92 style levers. Whatever you decide to buy, the action will smooth up after a bunch of shootings and some cleanings. Take a chance and get the one you really want, you can deal with any feeding problems after that, if there are any.