I bought a box of .380 hollow points. Took them to the range to test fire in a Ruger LCP. About every 3rd round gave me a failure to extract. So I'm thinking that the gun has to go back to Ruger. Before doing so, I decided to take the barrel out and try to fit various cartridges in the chamber. Sure enough, only the Corbon gave me a tight fit. Wolf and S&B slipped in and out very easily. Now I'm a bit pissed about that $30 that I threw away on this ammo. Is this a common problem with Corbon? Think it's worth writing to them for a refund?