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.
Preservation (library and archival science) Preservation refers to the set of activities that aims to prolong the life of a record and relevant metadata, or enhance its value, or improve access to it through non-interventive means. This includes actions taken to influence records creators prior to selection and acquisition. It should be distinguished from conservation-restoration of cultural heritage, which refers to the treatment and repair of individual items to slow decay or restore them to a usable state. Conservation is occasionally