There were not many admirers of skirmish formation in Russia, one of the few were Suvorov and Kutusov. Kutusov wrote several sets of notes on light infantry already in the 1780s.
During the early campaigns the Russian skirmishers were rather poor compared to their French counterparts. One Russian author wrote, "our grenadiers, of great height and with large plumes, were sent to skirmish: the weak and small French shot them from behind the rocks, as they wished." One of the few exceptions were the 1st Jagers. According to James Arnold this regiment, "had the best skirmish troops in the Russian army. They had trained hard in the Finnish forrests around Karelia and were comfortable fighting in broken terrain." (Arnold - "Crisis in the Snows" p 112)
They were trained to use terrain features, to fire from standing, kneeling or lying position, the skirmishers acted in pairs with 2 - 5 paces intervals between pairs, and were manoeuvred according to drum signals and moved at a run (150-200 paces per minute).
The troops were sent to skirmish by platoons or companies, who relieved each other in turn, or by battalion or regiment. For example a day before the Battle of Eylau, the Arkhangel Musketier Regiment was deployed as skirmishers to cover the withdrawal of the 4th Division. At Krasne in August 1812, the 49th Jäger Regiment was placed in front of the village in skirmish order.
There were however disagreements about the use of large number of skirmishers. Published in 1811 "On Jäger Training" recommended the use of entire jäger battalion (4 companies of 2 platoons each) in skirmish order. The grenadier and strelki platoon were kept in reserve behind both flanks of the skirmish line formed by the remaining six jäger platoons.
Barclay de Tolly was against using large number of skirmishers. He wrote in 1812; "in the beginning of a battle one is to push out as few skirmishers as possible, but to keep small reserves, to refresh the men in the chain and [to keep] the rest behind formed in column. Heavy losses cannot be attributed to skillful actions of the enemy, but to excessive numbers of skirmishers confronted to the enemy fire."
At Berezina in 1812, a large number of jagers and line infantry were thrown into skirmishing in the overgrown terrain. They were shattered by French cuirassiers and 1,500 were taken prisoners.
Once again, another of Posties Russian units, the figures are 15mm Essex, they're based up for Posties GdB rules and the rough grand base is made by The Last Valley.