Don't forget about the 375 H&H in the standard barrel. There were only a handful of those made. And remember that those calibers you listed are MUCH rarer than the 243 standard. I've seen a couple 243 standards for sale but it seems that they never attain the price that their rarity should demand.
True, there were only about (10) 375's made with a true standard weight barrel. The rest of the 375's in a standard rifle bore a medium heavy barrel contour, of which there were more of those in 375 than a 243.
Either way it is fun for me to look at a picture or pick up a rifle and "disect" the year, what is correct, what is wrong, etc... Makes it interesting for sure.
