I've got over 200 rounds with the Kleenbores and I likethem. They are cleaner and I have been able to adjust powder charges to re-find accuracy is several rifles. As far as the crud ring with 777, yes with the Kleenbores the crud ring faded away. But then I clean thoroughly in-between shots.
I recently snagged up 1200 Kleenbore's at Wally Worldmis-priced for less than $2.00a package.

I was (Still am) shooting the Winchester W209's which are very, verygood. Still haveseveral thousandWinchester W209's as well.

Remember, don't expect accuracy to be the same if you switch primers.

You often needtore-verify and adjust your loadsevery time you alter something, including primers.

M2C,

Tahquamenon