I am .850 to about 12.75ish. I like a more traditional cue spec wise. If I go slim .840 to 1.250 ish. My shafts are a little thicker 13.1-13.2 but with a long taper. Creates a nice stiff solid feel with nice playability. Tip diameter isn't as important as 12" down. I have no problem saying I borrowed my base taper from a skip Weston I had. I modified it a bit over the past few years. I don't offer multiple tapers
.850-1.250 two angles. Sometimes 3 angles. Me, no like single taper butts.
1MM to 1.25MM taper in 16 inches.
My handle is thinner because of the two angles.I gave up the compound butt tapers. The compound taper sure made it easy for me to build stiff hitting cues but they felt uncomfortable to me, too thick. Even though they were 1.23 in the butt, they were thicker in the handle area than my 1.25" butted straight taper cues. The only real drawback from the change was my "A" joint losing a lot of diameter, but that wasn't a tough fix.