Triple 7 comes in pellets, thta much I know. I'm not sure it comes in loose, but it probably does.

Windex is good for swabbing between shots at the range, and also for cleaning. Many use a 50/50 mixture of isoprophyl alcohol and windex. The alcohol evaporates rapidly. One moistened patchfor swabbing, then one dry patch, then pop a primer, then repload and fire.