slschultz,
Thanks for clarifying that. Your original post appeared to me to be from someone who has never reloaded, and suddenly found themselves in the position of needing to improvise and didn't want to invest in a manual to do so.
I myself have been reloading for over 51 years, and I still consult the manuals, especially for shotgun reloading, which is not one of my favorite endeavors, but I do it out of necessity. If you're looking for buffering material, since Winchester no longer offers their excellent Super Grex, it's available from several different sources. Precision Reloading seems to have the best price and they claim their shot buffer doesn't have to be vibrated or shaken to fill in around the shot. You might give them a try. These days I reserve my stash of Super Grex for case filling for my .45-120 Sharps smokeless powder loads.
I've loaded quite a bit of 00 Buck, but I cast my own, and like I mentioned above, I don't use buffer in those loads and they group about the same as the Remington and Winchester 00 Buck loads I've patterned.
Hope this helps.
Fred