Normally there are two (90-shot) 900 aggregates. The second match begins when the first concludes. You may shoot in either match or both matches., and matches may be shot with either a .22 rimfire or a centerfire pistol.
Normally there are two (90-shot) 900 aggregates. The second match begins at 11am even if the first match concludes early. You may shoot in either match or both matches. The 9am match must be shot with a .22 rimfire pistol. The 11am match may be shot with either a .22...