.40 S&W bullets suseptible to setback?

[Hunter125]

Just read on another thread that this was the case and it could possibly cause a kaboom http://www.thehighroad.org/showthread.php?p=8265382. I check the chamber daily and often clear both of my .40 pistols. Am I setting myself up for a kaboom? Been on this and other forums for a while now, and this is the first I've heard of this.

 

[TheProf]

Just as a precaution, I never chamber the same round more than 2x. If I have to clear the chamber (say, when I field strip the gun to clean it), I take the ejected live round and place it in a special bucket.

After awhile, I have a dozen or so SD rounds in that bucket, I then use it up in the range. This is my way of practicing with my more costly SD ammo.

 

[1911 guy]

All rounds are succeptible to setback with repeated chambering. The problem with .40 S&W is that this spikes the pressure curve to sometimes dangerously high levels. Most other cartridges operate at either lower levels or have enough case capacity to offer a little more "forgiveness" when setback eats into case capacity.