The bolt action rifle used by some of the hunters is a Mossin Naggant (look at the magazine, hexagon breech, and bolt). These were first produced in Imperial Russia from 1891 until the 1940s by the USSR and were also used in limited numbers by other Eastern European nations (including Finland). This places the time period of this film sometime after 1891.
After they blow the zombie's head off, they pull out a flame thrower and burn the body. Flame throwers of that type weren't in use until the 20th century.
English
$5,000,000 (estimated)