This pellet is sized .300 with a flat base.
So far tested in Daystate Wolverine 303, 1:18 twist. with great results
Other barrel testing coming. At this time, we do not expect these to work in original smooth twist FX barrels but should be OK in the new Slug X barrel by FX.
DO NOT BUY THESE OR ANY SLUG FOR A SMOOTH TWIST FX BARREL!
NO RETURN WHATSOEVER!