My continuing efforts with the .44-77.

[Kurt]

Jim,

Looking at the picture of your range.
With that narrow field of fire with the trees so close the head and tail winds would throw a wrench into the works. I don't think your bullets are going anywhere near over the trees.
A bullet gets most of the drift change the first 1/2 to 2/3 from the start.

From looking at all of your targets your rifle is a fine shooter. Even with different times out with different load components it's holding MOA or very close.
I only have one rifle comes close but it's not where you are that I use that will do what your shooting and that is the CPA .45-90. My .44-77 Farmer I have not shot enough to know what it can do as well as my .40-65 tight chambered CPA and I have seen groups at 2" or less a few times but not as consistent as your holding.
If that rifle holds like yours at 220 yds it will hold well at the 1K baring wind calls.