Brian,
Hi. I have shot some of the best scores I've ever shot using teflon, I use it for X-sticks and bench targets but not so much for offhand, when you use teflon you have to clean after every shot and when you get used to shooting all afternoon without cleaning you tend to get spoiled. I would highly recomend it for bench and X-stick matches and I do use it for offhand sometimes when I shoot at Friendship.
Regards, Steve C