Hello, I am new to "Glock Talk", I have recently purchased a Glock G19 Gen 4. I found some ammo, Hornady XTP 9MM 124gr, #35571. Would this round be a decent round to use with our G19? We have about 500 rounds. I have a lot to learn, and have been reading a lot on this site. I appreciate your input and help. Would "Walmart" be a good place to try and buy more rounds? What would be your best opinion on a good round of ammo for shooting at our range, and the best for home protection. Thank you for your help!