Wow, I\’m surprised you are shooting 24.2 of N140 with the 90s. My go to bullet these days is the 80gr ELDm from Hornady and I\’m getting 2,700 fps out of them with that same powder charge & LC cases.
My barrel is a Bartlein 6.5 Transitional and it has a Wylde chamber. I don\’t think I could shoot that much powder. We tried 23.7gr in a buddies rifle and it was popping a lot of primers. Incredible accuracy, but too much pressure. It was fine in my Bartlein, but his was a White Oak and it would not take that much powder.
Thanks for sharing the information, very informative.