I went to that link and I know about where that club is near Columbus. We have had 2 NWTF meetings (new chapter forming) just down the road from it, I think, or it MIGHT even be being held there at that same "country club". Heck, I bet it IS held there. I might run over there to watch sometime. If I shot it, I'd probably just shoot smokeless, assuming that's allowed. I have no 20 gauge reloader and it'd be tough to find black powder loads for the shotgun. I can handload it for the .357 revolvers (have two .357 Blackhawks) and the rifle.
Yes. As a matter of fact, most cowboy shooters shoot Smokeless, not BP. I would guess only about 20% of us shoot Black Power (or one of the substitutes). You can even shoot Black Powder in some of your guns and Smokeless in others if you need to. But to shoot in one of the BP categories all your guns need to be shooting BP. No problem, just shoot in the category that fits.
Can't help you with the boots.
Here is the list of Outlawed Items:
- Modern shooting gloves
- Short sleeve shirts (male competitors only)
- Short sleeve tee shirts, long sleeve tee shirts, and tank tops for all competitors.
(Long sleeve Henley type shirts with buttons are acceptable.)
- Modern feathered cowboy hats (Shady Bradys) Straw hats of traditional design are acceptable (e.g.,Stetson, Baily, Sombreros,etc)
- Designer jeans are not allowed.Designer jeans include modern jeans that have slogans or logos embroidered, silk screened, and such, saying things like “PINK” or “BABY.” Jeans with fancy or flashy adornments are acceptable.
-Ball caps.
- All types of athletic shoes or combat boots, no matter the material from which they are constructed.
- Nylon, plastic, or Velcro accouterments.
- The displaying of any manufacturer’s, sponsor’s, or team logos on apparel. (Manufacturer’s labels on such apparel or equipment are acceptable)
Just ain't for me. I know there's a club over somewhere around Columbus that shoots CAS which is 20 miles from me. I used to shoot IDPA about 15 miles down the road from me this side of Eagle Lake. I enjoyed IDPA and as a concealed carrier, I found it some good practice, if not really "training", for the real world. I don't think I'll be carrying my '51 Navy or riding a horse anytime soon. I used to ride 100 miles on my motorcycle on a Saturday to shoot IDPA from my old house. Now, I've moved up here (not because of the IDPA club), and that club has gone the way of the dinosaurs. BUT, I can shoot in my back yard here! 
