Hi, I own a rifle that I dont know the caliber of. I was reaching out to see if anyone on here has a good gunsmith to do bore casting or if anyone here can do it for me at a reasonable price. Many thanks and I apologize if this isnt the correct forum. Its a beautiful mauser action bolt gun with an octagon barrel. I believe its some sort of .30 cal Many thanks.

PS - Yes i have checked everywhere on the rifle for caliber markings and they are no where to be seen.