6 balls, none touching or on a rail and any order you choose, I’d gues 75-85%. 0n a Diamond table, the 2 missed shots could be the 1st ball attempt or the last remaining ball on the table. Cue ball speed doesn’t require stroking hard. For the best shape, play the angle shots before the side pockets and you do not need a lot of English either.
I am out of town and don’t return until after the holidays. I‘ll get a few players at Sierra Billiards to try this.
6 balls, in any order and no object balls touching or frozen on a rail. I believe the success rate will be high.
I’ll make sure the Diamond tables used have 4.5” CP, not the smaller 4.25” CP half of Sierra’s 9’ tables use.