What kind of rifle takes a 7.92 round?

Answer 1

The 7.92x57 round was developed for the Gewehr 98 series Mauser rifles, and is likewise used by that and a number of derivatives (although not all Mauser rifles are chambered in this cartridge -export models and models manufactured in other countries were often chambered in other calibers... the German, Czech, Turkish, Yugoslav, and Chinese Mausers use this cartridge).

The round was also used in the MG15, MG34, and MG42 machine guns. The Yugoslav Zastava M76 rifle manufactured for the Yugoslav military used the 7.92x57 cartridge (export models were also manufactured in 7.62x54R and 7.62x51).

The first true assault rifles - the MP43/MP44, StG.44 and FG42 - used a shortened form of this cartridge - the 7.92x33.

There are also some Mosin-Nagant M1891 rifles chambered in 7.92x57. These are extremely rare, and were converted from 7.62x54R when they were captured by the Austro-Hungarian Empire (although the Soviet round is described as a 7.62 round, a different method of bore measurement was used, and the bore of the 7.62x54R rifle is actually 7.92, making conversion to the 7.92x57 cartridge feasible).