Originally Posted by Michael Hoth
This is the conventional answer, but with modern papers not always necessary. I don't buy smaller paper for specifically this purpose, but I do stock papers I use in 8x10, 11x14 and 16x20, because I print on all those sizes. Ilford papers, for example, are so amazingly consistent that I find I can make test strips and prints on any size of MGWTFB from any batch and use the data to print on paper from a different size and batch with absolute consistency. Not recommended but I've found it works. Modern Ilford paper is just THAT good and consistent.
Originally Posted by David Brown
I've not actually tried this with the Adox MCC I also use so that may be as consistent too, I just don't know.