The reproduction has the index markings on the barrel and plug. You are correct about having the proper tools. Just as disastrous as doing it wrong is live firing a musket if the barrel has been compromised. My bore camera did not do an adequate job of inspecting the barrel and I wanted a better look before trying to fire it again. When I took the plug out, I determined I did not want to live fire it again, rendering it to the world of "reenacting only".
Your advice is sound.