74400

This is, of course, 5-ball 744 with two balls missing:

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Not much of a pattern, for three balls: the '7' is too much higher, the waiting too long.

Well, we'll just have to fix that, and get something out of it.
First, let's put the '7' behind the back:

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Then we'll do the '4's as Shoulder Throws:

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The wait with the two '0's lets you get ready for the big '7' effort back there.
Taking the '4's back also keeps a rhythm going, despite the pause.

Hmmm...let's see...a Pirouette is too been-done...Columns are too obvious.

How about, doing a Triple Cross:

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Cool. Each toss is shifted to the other type: even to odd, odd to even.
Apparently.

Well, this pattern is just a 3-ball fake anyway.