Daryl,
Good to hear your rifle shots fine!!
If you want some more wind, you better come to my home.
Two days ago we get some 70Km/H (44mph) wind all day and a week ago some 107Km/h (67mph) drifs. LOL

I had to increase my charge to "uncross" my barrels.
Im using 109-115 FFFg now with 460gn REAL but I have not tryed RB too much, probably next time, I have to try some slugs in my scoped DB 12ga first.

You should check your sight, my rifle have one barrel shooting higher until I found that the sight plate was not leveled with the barrels. When I straight it it shoots almost leveled.
Im not shure but it looks like right side of your sight is lower than left, that is consistent with R barrel shooting high.

JMHO
Martin