I don't know of anyone using either... at 55yds, the box the test pack of 3 head sizes of defiants came in was just about big enough for the group through the walther. :eek
i had the ones with the splits in the tails, but i'm sure i've seen mentioned that they weren't right.
dunno, i tried everything with them, cleaning,washing, sizing etc, but to no avail.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep