The Russians were renowned for their terrible marksmanship, even at a time when you probably couldn't put two shots in the same square inch of space from five yards away.
I believe there is a quote from a French officer who noted that a group of Russians fired on his men from sixty paces and failed to inflict a single casualty.
Naturally, as with all armies, there was a great deal of variation, so there were probably some Russian units with excellent marksmanship, but these would be rare.
Essentially it was down to training. Russian linesmen were allowed two shots per month for training. I think the British allowed 24 or so for line troops, of course, they would have a higher than normal standard for marksmanship...
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