I believe you will know when the gun is right for carry. Each gun is different and some will require more rounds down the pipe than others. I say that because I have an STI Ranger II that required about 600 rounds before I felt confident enough to carry it and I have a Kimber TAC II Pro that after 100 rounds I felt I could carry it. I also have an Ultra Raptor II that it took 800 rounds. I was about ready to get rid of it but gave it one last trip to the range. Had it failed at all on the last trip to the range it would have be gone, but I went through 200 rounds that day without any failures. And it hasn't failed since, it is my first choice to carry.
Just buy some ammo and enjoy shooting it.
Now is the time for ALL MEN to come to aid of their country. Protect the freedom for ALL!!
ALL GAVE SOME AND SOME GAVE ALL!
"A strong body makes the mind strong. As to the species of exercises, I advise the gun. While this gives moderate exercise to the body, it gives boldness, enterprise and independence to the mind. Games played with the ball, and others of that nature, are too violent for the body and stamp no character on the mind. Let your gun therefore be your constant companion of your walks." --Thomas Jefferson, letter to Peter Carr, 1785
Life member: NRA, GOA, VVA, Front Sight Firearm Training