Does anyone here know what musket Russians used in the finnish war 1808-09? I found that the Finns used the M1805 swedish land pattern musket and its earlier variants but i cant find any info on what muskets Russia used.

Пехотное ружье образца 1805 года, Пехотное ружье образца 1808 года.

Can be hard to get right because it was sometime around their equipment reform.

So, Russians during Napoleonic wars had horrendous situation with guns. They had huge variety of guns, in beginning of year 1812 they had 28 different calibers in service. Different units would be equipped with different stuff, and even then what was supposed to be done often differed from reality.

Even when troops were fully equipped with one pattern of gun, it could be so worn down that soldiers might ditch it for whatever they come across which is in somewhat better condition.

Answer could be anything, it could well be something which was not officially in service or some captured gun from previous war. Some captured guns had also gone trough multiple hands so even reading mention “captured French musket” could actually be something which French themselves had previously captured from someone else.

All armies had difficulties with logistics, Russia propably most out of any.