While on this topic...
There were two ram kills in the Soviet Union that involved jets. One was Su-15 and the other MiG-21 IIRC.
18 July, 1981 on the border of Turkey by an Su-15 piloted by Valentin Kulyapin on a CL-44 he had no time to separate for a shot. Maneuvered his jet under the right stabilizer and then pulled up, afterwards ejected.
28 November, 1973 in Azerbaijan by Evgeniy Eleseev in a MiG-21. Against an Iranian F-4 with an American IP and Iranian trainee, both missiles missed, was then given "taran" command to which he responded "carrying out", his last words. F-4 crew survived.