I have always wondered the difference between .22 lr ammo types and how they behave, so I did a little test. I used plastic gallon milk jugs full of cold water, lined up perfectly, all the same type jug so not to skew the results. Temperature was 80 degrees Fahrenheit, humidity was Ohio in august . Test rifle was my first firearm, my early eighties marlin model 25, 21 inch barrel, all shots were at 40 yards. As I list each type of ammo, I will state the number of jugs the bullet penetrated into, some shed their jackets into separate jugs that the slug was recovered from. Velocities are claimed from the manufacturer on the box, because primer is too frugal to buy a chronograph. From top row left, win power point, 40 gr HP at 1280fps. Jacket recovered in jug 1, slug in 3, penetrated back of jug 3 and dented jug 4. Second from left, federal champion 36 grain HP, 1280 fps, 4 jugs of penetration. The hollow point barely deformed. Top row, third from left, CCI mini mag, 36 grain HP, 1260 fps. Jacket, 1, slug in 3. Second row, from left, aguila super maximum hyper velocity 30 gr HP, 1750 fps. Beautiful mushroom caught in the second jug. Second row center, win 555 36 grain hp, 1280 fps, jacket fragments found in 1 and 2, slug in 3. Second row right, CCI segmented 40 gr HP, 1050 fps, one segment and small fragment in jug 1, two segments in jug 2. Bottom row left, CCI velocitur 40 gr HP, 1435 fps, 100% retention and nice expansion, recovered in jug 4. Bottom right, win 555 drilled into a deep hollowpoint, approximately 2/3 into the body of the bullet with an .080 drill. Multiple fragments recovered in jug 1, slug in jug 2. I was surprised with some of the results, I didn't expect to see that much fragmentation with some of the rounds, especially the bulk win 555. I was also surprised at the differences between types, the federal with no practical change, and the aguila performing like a premium self defense round. Equally impressive was the CCI segmented HP, performing exactly as advertised. Admittedly, this test isn't perfect if someone was to compare the results to flesh and bone, but it demonstrates the capabilities and differences between manufactures, weights, and even velocities as to how each round will expand and penetrate. I sincerely hope you enjoyed this as much as I did.