Well, because the ballistic coefficient of a BPC bullet is very low when compared to modern ammunition (.380 to about .420), wind drift is a major concern. Letâs take a look at just how much wind can affect the flight of the bullet when it is blowing at 5, 10, 15, and 20 miles per hour.
Shelved record boxes of an archive. An archive is an accumulation of historical records or the physical place they are located. Archives contain primary source documents that have accumulated over the course of an individual or organization's lifetime, and are kept to show the function of that person or organization.
the purpose of the national archives is to store the a collection of information about the county.he purpose is to  document and preserve acts of government, presidential decrees, and  the regulations of the country. The second â¦ purpose may vary by  country. In the US, the National Archives and Records  Administration is also the body that transmits the Electoral  College votes to Congress.