sometimes the "seat of your pants" is IT … had an Abolt 22/250 that was a CF wrapped barrel from factory a long while back - I can't ever remember the powder now but the load I arrived at for 40 gr Vmax/Bal Tip was stellar but when I carefully tried 50's I blew primers no matter what - with the 40's it was just one of "THOSE" loads that worked and worked well for thousands of varmint "eradication" rounds - in part, that is what make reloading so "interesting" for many of us