Not a fan of Winchester hulls. Remington last longer and are easier to reload.
I like the STS/Unibody hulls. (6 fold crimp) You can get high brass "Express Long Range" pheasant loads that will be STS hulls. I'm assuming you are referring to 12 guage.
Stay away from Federal hulls for loading.
I highly recommend picking up a Lyman Shotshell Reloading Handbook.
Reloading shotguns shells should be done to the letter like baking a cake. Don't mess with proven data. Data is availale online at Hodgden.com as well in their reloading data section.
The most common 00 buckshot wads for Remington are:
Remington RPX12 (9 pellets)
Remington RP12 (10 pellets)
The most common 00 buckshot wads for Winny hulls are a little more involved: ((all are needed together) For 9, 00 Pellets)
1- B.P. BPGS
1- 12ga. B.P. 1/2" Fiber Wad (under shot)
1- 12ga. B.P. 1/4" Fiber Wad (under shot)
If you need more info, PM me.