Bolt-action is reliable, accurate, enduring and overall good.
Yllendthyr is in the process of replacing them with semi-automatic rifles for the Dyrdg but less priority units still have them at large.
My Seathwyr use bolt action rifles most of the time, too. Granted they're elite light infantry and when assigned to a platoon they become designated marksmen.
And then I have Aramegyr units where the nobles at timesdecided to make their armies use traditional pre-cartridge rifles an other archaic weapons because either that's what they're used to handle or just out of "honor" and similar reasons.
Aramaegyr units in general are quite weird.