Here is my collection of 240s Grandsire Doubles using all four calls - bob (B), single (S), extreme (E) and bingle (G) along with plain leads (P).

Using bingles and extremes we have a massive 1574 callings or 36636 touches, of which 246 callings (5760 touches) contain all of the calls along with at least one plain lead.

There are two other separated-off sections of this collection, the non-palindromic callings with a call every lead, and the palindromic callings with a call every lead. Of the remainder, fifteen touches have with no singles but have every other call and plain leads. First, three three parts without singles:

pggebgge pggebgge pggebgge
pgggbgge pgggbgge pgggbgge
pgggpgge pgggpgge pgggpgge

There is a two part without singles:

pggepgbepgbe pggepgbepgbe

And the remaining one parts without singles:

pegebgpegebgpebegegebebg
pggbggpbpegbgegbgepbpbpe
pggebgbebgbebggepgbepgbe
pggebgbebgbebgggpgbgpgbg
pggebgbebggbgebgggpbpgbg
pggebggbgebgbebgggpgbgpb
pggebggbgebggbgebgggpbpb
pgggpbpbpggepggbgepggbge
pgggpbpgbgpggepggbgepgbe
pgggpgbgpbpggepgbepggbge
pgggpgbgpgbgpggepgbepgbe