I have seen one RS in .303. A couple of years ago I went into a
local gunshop and saw a couple of 99s on the rack and one was
an RS, it was busy and I didnt look at anything and left.
Came back a day or two later and one 99 was gone, asked the
clerk what caliber it was and I expected him to say .300 and
was kind of puzzled when he said .303 Savage. He said it was
only on the shelf for maybe half a day and a guy bought it
about a minute after he looked at it.