RE: 300 magnum
Do something to humor me, and don't be offended. Let someone else load the guns for you 1 cartridge at a time without you looking each time. Have them slip in a fired cartridge caseat some point before you adjust the scope.
I will bet you a cold drink you flinch and see it clearly when the fired cartridge is clicked on. Don't worry, 95 out of 100 people you find will do the same. This is a learning tool for you and not meant to embarrase you. If you truely don'tmoveI will be impressed, If you do move I will be just as impressed thatyou went to the trouble of experimenting to improve yourself.
If you do move consider not adjusting the scope. If you do decide to adjust the scope only do it after 3-shot groups.
Good luck.