Congrats on your win. I've heard the older one referred to more as cross sticks. Cowboy Action Shooting has some long range classes as does NRA.
Hardwood and leather is about all the older style are made from. I've never seen much historic evidence as to what the buffalo hunters actually used other than written descriptions.
Here's some old style available for sale. I like the ones at the bottom of the page. I'd add some feather down on some string as a wind indicator.