Leigh Neville's book 'Modern Snipers' is a must read for anyone interested in this subject.
The 'Stalking' portion of most modern Western/NATO-spec Sniper Schools which typically makes up the culmination of the preceding multi-week course consists of the two-man team's (sometimes lone) ability to start out about 1200+ yards away from a set location and then approach within 200 yards of the location over a time limit of 2-3 hrs.
All the while instructors (who are damn good at spotting movement, been doing that their whole life) at the location are on constant lookout for the sniper team with binos and other observation gear.
Any suspected movement and a walker dispatched by the instructors heads out to the probable location of the sniper team, get caught, and you're ejected from the course.
But that 200 yards is just the pass threshold though...guys like this one, as demonstrated, could cut it a lot closer.
Unfortunately I do not know much about the sniper courses conducted by the IA/Indian SF...either because I didn't look around well enough or because of the lack of enough in-depth material to go on.