What do we really know about the transonic zone?

[Kurt]

Jim,

I cant say much about the transonic zones but I think they have a play with our black powder loads because the 900 yards are my little gremlin also so maybe ???

But from what I under stand about this subject that is the altitude above sea level also has some effect where this zone is.

I know that I do better out west where the ground elevations are higher at 900 yards than I do at Lodi. Nine times out of them my 1000 yard score is better than the 900 yard around our location.

Kurt