I ordered the 20 round option to try them out. The pricey snap caps I used to buy in the stores give you very few to work with. I like the Snappoint snap caps for cycle testing after cleaning my guns and for some dry fire practice. But, I wanted them mostly for cycle testing of brand new fully loaded magazines. Many mags, including some of the original gun manufacture's mags, (and especially 3rd party mags) need a little attention and work internally... before they become reliable (burrs, flashing, rough spots, etc.). This gives me the realistic weight and feel of REAL cartridges without the risk of using real live ammo... and then having to worry about the rare, but possible...catastrophic failure later at the range due to bullet setback. It also prevents the other real possibility of a negligent discharge occurring when using live ammo! These are mostly real... but, no primer, no gunpowder! I like the blue bullet to contrast them against the real thing too. Fast shipping and a good value too!