The problem of electromagnetic scattering from perfectly conducting circularly symmetric bodies is considered. The mathematical formulation herein employed uses the Electrical Field Integral Equation (EFIE), which is applicable to either open or closed surfaces. The solution is effected by the Method of Moments. Test functions are chosen to be equal to basis functions (Galerkin´s alternative). Three different classes of basis functions are studied: local (pulses and triagles), global (sines and cossines) and band-limited ones (sampling-like functions). Results from the analysis (i. E., determination of induced electric currents)of different Kinds of cononical scatters (spheres, discs and cone-spheres) illuminated by an axially incident plane wave, using local and global functions, are compared with results found in the literature. In addition, circularly symmetric reflector antennas (paraboloids and hyperboloids with diameters between 10-20 lambda) are analyzed using the three different classes. The analysis involves the determination of induced currents, scattered and radiated fielsd. A comparision is made among the results obtained when employing different numbers of basis funcions and with the ones derived from Physical Optics (PO) approxomation.