stuart ran the 6mmBR with Reloader 15 ???.CCI BR4 and 1990's vintage original walt berger 105 vld (which are as long as the modern 105 hybrids ??).
i gave the 7x63 another run, but let it down big time.
it was one of those days where, what you thought and hoped would happen, never looked like it, and soon kicked you in the "you know where" when the completed record targets were displayed.
everyones targets had at least 1 or more unexplained vertical shots.
Gotta love those twitchy down range winds, sounds like you had similar wind to ours. I reckon in future you should be making the young bloke load his own ammo if he hasn't got the decency to let you beat him for score