Rifle? In truth the worst I owned, a Lee Enfield, I owned one once for 8 days, what a piece of ####, and I dont care what the Milsurp forum guys say, there is a reason I used to turn them into crib boards. Mine was the standard Canadian gunstore sporter #4mk1, just junky, and awful, there I said it. There is a reason they sell for 150$s. Next in line was a Zastava Mini Mauser, with its awful ejector and associated problems, awful, just awful.
I have seen and handled ALOT worse, but never owned them. I did have a Parker Hale 98 that I bought once for a project gun, the 'long distance description' was far from accurate when I got it, it was infact in such bad shape I ended up parting it out at a healthy loss, but that was not strictly the guns fault, as much as a previous owners.