I fired my TC Encore 8 times the other day using 2 777 pellets(100gr) and swabbing the barrel out with a saturated patch and then a dry patch after each shot. I cleaned up up today and the first couple patches I ran through pushed out some gritty foulings. Im pretty positive that I have never seen this before, could it be unburned powder? The debris was sort of crusty and gritty, maybe it is whatever the coating is that holds those pellets together? or some slightly moist powder that didn't burn? Anyhow, I didn't like it too much and am either switching to 777 in powder form, or see what all the hype over Blackhorn209 is all about. And why we are at it, can some one explain the differences between ff, fffg and so on for me, thanks.

-Kevin