It depends upon the pistol. You can try chambering the same round 20 or 30 times (obviously you need to do this safely), then compare it to untouched rounds.TexasComputerDude wrote:... the only problem is I would lose a round everytime I go anywhere. I've heard some horror stories about chambering a round multiple times.
If you don't own a micrometer, place the cycled round primer-down on a table and put an untouched round on either side of it. Place a ruler across the three bullet faces.
I have done this and seen no measureable setback after 30 cycles.
There is another problem in warm, humid climates: brass shells become tarnished, and ultimately could fail to extract. I fire the top round periodically as a form of quality assurance.
- Jim
[Edited to correct messed-up attribution]