Mr. Nicholas Flood:

There are plenty of ways that it can be on an advantage. One of the ways is when people are shooting long distance, they have to deal with external ballistics, which could be wind, mirage and a number of other factors. There could be a particular type of wind and the shooter will know it will blow his round off a particular distance. He will make an allowance on his scope and make up for the continuous wind he is seeing. He tries to shoot with the wind. A semi-automatic rifle will reload the round and the shooter can fire a round every few seconds. Not only as Mr. Keogh said can the person get away from having to come out of the rifle position, pull the bolt, reload the round and get down, which takes a few seconds, but he can hold position on the target as well as defeat the wind characteristics. It is used by competitors in other jurisdictions.