Every collection should have a Winchester model 12 in 12,16or 20.
1 96 or 98 Mauser and something between 1903 and an M-1Garand.
A 1911,Hi-Power,Smith & Wesson or Colt revolver.
You ought to have at least 1 rifle ,1shotgun and 1 repeating pistol cartridge hand gun that fit you that YOU shoot well every time.