Glad you bumped this, Dave. Looks great! 3/8" X 10 joint thread? Still a popular joint, flat faced wood to wood giving the feel and feedback of a one piece cue. Compare the grain in the shafts of this dufferin and your action cue. I'd guess you'll find the dufferin to have the tighter grain. Depending on what you like for feel, this may turn out to be a better playing cue than the Action.
Tip? I play with a kamui black medium...layered pigskin. Layered tips are more expensive, but seem to hold up better with less mushrooming. For break cues, harder tips are favored with some makers even using pheonolic tips. I break with a specific "break" cue (
https://www.seyberts.com/break-cues/pechauer-break-cue-natural-stained/ ) that has a very hard tip, a stiff shaft, and a stronger steel joint. This keeps the tip of my playing cue in better shape.
With your wood skills, I can see another cottage industry looming? "Slodave's shift knobs and cue repair".
I dunno why, but cue terminology is weird...tips are measured in metric, while joints use SAE sizes.