With ballistics apps it's an iterative process. A couple of points jump out from your post, there's no mention of -
Scope height.
Zero range.
Bullet velocity.
I find that each time I use the ballistics app I find mistakes and refine my data. I wouldn't expect to get a repeatable solution...
I've had a 260 Rem since '99. At one point I had two. Unfortunately the current 260 will be the last one and will morph into a 6.5 Creedmoor soon. The lack of choice of factory ammunition has killed it for me.
Regards
JCS
I place the wet cases in a reloading tray as follows and put the tray into the airing cupboard. A hole has been drilled in each cavity to let the air circulate.
Regards
JCS
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