Things I liked:I measured a dozen or two of these and they're all 4.48 or 4.49. I do hope that other tins are consistent with this. Pellets are uniform and shoot very well. Things I would have changed:Perhaps have the tins marked for size in case there is deviation tin to tin. What others should know:My Gamo Whisper shoots 4.47-4.49 pellets the most accurately, with 4.50-4.56 coming in not as accurate. These only varied between 4.48 and 4.49 and shot with excellent accuracy at least to ten yards. I would expect similar results to longer, but have a small backyard.
If you gun like tighter pellets, these are probably not for you. This can vary from gun to gun even of the same model.
Things I liked:These pellets are light and consistent. The head sizes are in the 4.47-4.48mm range and guns that like looser pellets should like these. My gamo whisper likes RWS Superdomes, but they don't make nice target holes. These are cheaper, punch nicer holes and have a similar flight trajectory. If your gun likes Superdomes, give these a try. Quality is top notch. What others should know:The RWS Hobby (orange) are a much tighter pellet. More in the 4.49-5.51 range. My gun doesn't like these near as much.