  Using frequency-chirped radiation pressure slowing, we precisely control the
velocity of a pulsed CaF molecular beam down to a few m/s, compressing its
velocity spread by a factor of 10 while retaining high intensity: at a velocity
of 15~m/s the flux, measured 1.3~m from the source, is 7$\times$10$^{5}$
molecules per cm$^{2}$ per shot in a single rovibrational state. The beam is
suitable for loading a magneto-optical trap or, when combined with transverse
laser cooling, improving the precision of spectroscopic measurements that test
fundamental physics. We compare the frequency-chirped slowing method with the
more commonly used frequency-broadened slowing method.
