I had thoughts of doing comparison testing of .22 Rimfire ammunition. All across a chronograph, graphing the results for velocities and accuracy. Same rifle, same kind of target, same range, all on the same day if possible. I have eight different brands/types on hand, and would likely purchase more variations for the test. Blog the whole mess of course, with photos and graphs.
In the meantime, I'll be looking over my old steadfast .22 bolt action today while I consider the project.