Is anyone reloading their own buffalo bore type ammo?
Yes, I am. It's pretty easy. No reason you can't be as well. There are plenty of threads around the web on what it takes - check them out after you get some reloading experience under your belt.
If I were going to recommend a very basic start-up set for a person just starting out with reloading for the .38/.357 (for instance, my brother, who's about to do just this, I'd say to get the following:
A Lee Hand Press
A Lee carbide .357 4-die set, which includes shellholder
A Lee Auto Prime
A #1 auto-prime shell holder (different from the one that comes w/ dies)
A funnel
A pound of Unique or Power Pistol
500 hardcast bullets from Tennessee Valley Bullets, probably .358" 158gr LSWCs for versatility
300 small pistol primers (probably CCI)
200 magnum small pistol primers (again, CCI)
A set of Lee dippers
You might also want a decent reloading manual - any of them (new, used, whatever) - though there are plenty of manufacturers' websites with very cautious load data on them and plenty of "How To Reload" sites that anyone can find through Google
This is good solid equipment that you can expand on and will use for years to come, but it's not fancy and will get you started right away and won't break the bank. I would look to buy the hardware from Midway USA or Natchez Shooters Supply as I've gotten great prices from them - there are several other good-value places as well.
I really hope that you do start reloading and that you find it to be as rewarding a hobby as it's been for me. Please feel free to email me if you have any questions at all about it.