tried them bob... tried everything, cleaning the gun till it squeeked, cleaning them even. Perfect still day and I just could not get them to group... even at 25 yds. Indoors I couldn't get them to group either. Fliers out to an inch at least. Got better with smaller head sizes.
Mine were the ones with the tails with little lines on them...
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep