Mosin Naget
Mosin Nagants are WWII era, magazine fed, bolt action rifles. I have one, myself. Built in 1944 in Hungary. After WWII militaries in Eastern Europe started switching to SKS and AK's. There were a lot of these rifles now as "surplus" which is why you can get them so cheap. I bought mine brand new still in cosmoline. They're a fun gun to shoot IMO. Most variants fire 7.62x54R which is a decent size round. As far as whether you should buy one or not, I would buy mine again. I don't think they'll ever really be collector's pieces or anything like that though.
The effective range is 500m or 800m (with optics). I'd say they're pretty accurate for a mass produced rifle of that era. They were used as sniper rifles during the war. I've only fired mine from a bench at 100 yds and I'm sure it's a lot more accurate than I am (mine is a carbine model FWIW).
They are very accurate if the bore and barrel are in good shape. That x54r round is a round still used in russian sniper rifles. If you buy a 44 it will throw a nice fireball. Most are the 91/30 models that are rifle length.
You used to get them for $50. Hell used to could get a sks for $75. That x54r ammo is still pretty cheap and will last for a long time because it comes sealed in tins and uses older more corrosive powder.
$110 is a good price. IIRC, I paid about $140-150 for mine about 7-8 years ago. I, personally, wouldn't shoot some of that old ammo though. A buddy of mine got 1000 rds of surplus Russian stuff at a gun show that split the casings when he fired it.





