I have made a couple 14mm break shafts .
do a concave cut on the tip, so the tip looks like this and the CB is at point "C", and you will have a massive contact surface with the CB
There would be no squirt because the shaft would have to be as stiff as a you-know-what on a wedding night.
P.S. Am I allowed to say that? I've got to plead dumb-ass on this one. No one ever really told me whether, or not, I could use the word you-know-what, you know? It's one of those things that is rarely talked about. Maybe pt knows.
Ok, if we assume (please do...for the sake of this argument) that the larger the tip, the less accurate you have to be when striking the cue ball (less chance for accidental english or miscues), what if you had a cue and tip the same size as the cue ball? You'd never miscue, and every shot would be flush! Sounds great, right?
Yes, kindof kidding!
BRNNNGGGGG
"JC Cases...John Barton speaking...how can I help you?"
"I have one of your Ruggeds....and I can't fit my shaft in it."
"Hmmm, that's a new one....how long is the shaft?"
"Oh, it's normal length, that's not the problem...the tip is the same size as a cue-ball."
"Ummmmthe number you have reached is not in service...
...please hang up and try your call again."
I played with 14mm shafts for decades. As a matter of fact, I'm having a new one built at 14mm with an ivory ferrule to play with.