Yeah. Used to play the same game on my motorbike when I was younger and stupider(?).
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Mr Headroom
This is a good article on what to look for with your brass as you head north.
https://www.primalrights.com/library...nding-pressure
I go past max rarely, don't normally feel the need to, but I did with my Creedmoor with the Lapua small primer brass. Went in 0.2gr increments.
Another good source I enjoy is Johnny's Reloading Bench as he covers a lot of the cartridges I'm interested in.
https://www.youtube.com/channel/UCQ7...CQnRp9LXXxinJQ