I hunt and shoot in mountain terrain so I understand your point about wind. It’s not as hard as you think. I’ve killed a pile of wolves and yotes from 500-1300 yards and yes I’ve certainly missed a few due to bad wind calls.I am sailing and I know that it is quite easy to read the wind at sea.
At sea the wind is quite consistent. And I have a Kestrel wind meter.
But in the nature the orography is so different that it is sometimes
impossible to estimate the wind 200 yards away.
I think my biggest problem will be to stabilize lead free bullets.
I made some calculations with cutting edge bullets. Some of them
are 1.5 inch long and they need a twist rate of 1 : 7" to stabilize.
What do you think about 1 : 7" ?
And the barrel length: 24 inch or 26 inch ?
Some people say 26 inch is not so precise as 24 inch,
more vibrations. I am not sure if I should believe this.
The diameter will be 0,75 inch. They call it "semi-weight".
I don’t have an issue with 7 twist. Most of my 6.5’s are 8, 1 is a 7.5. Most of 6’s are 7. The only issue I’ve heard of with a 7 twist in a 6.5 is potential bullet jacket separation of you run a lead copper combo. If running solids a 7 is the way I’d go for sure.