OK. So I stumbled on this website the other day and was looking around. Kinda interesting until I saw this and then I was like "huh"? http://www.glockfaq.com/ The read from the website is below in quotes. I have never heard this. So have I missed something along the way? But first my question. Depending on where I am and what I am doing, I will shift between firearm condition levels. I am not looking for an "is this the best way to carry" discussion. I carry condition 1 when out and about. Anyway, when I clear my gun for the range or cleaning, I have to eject the round in the chamber. What then are they suggesting below? I don't shoot my carry ammo too much due to the cost. I do shoot it, just not that much. So what carry ammo I have, I plan to keep for a while. Thoughts on this? ******** "Why is it so dangerous to re-chamber the same round more than once? Loading/Unloading Magazines -- Caution! Constantly loading and unloading mags can cause deadly consequences for the unsuspecting pistolero! Reduced OAL is one of the primary causes of second shot stoppages (SSS) -- when the pistol fires the first round in the chamber, but malfunctions on the second round. This has been a serious problem, especially with some LEAs, and has resulted in much consternation about certain pistol brands or brand models. SSS problems are more of an ammo/operator issue and have little to do with the gun. The most common reason for SSS is reduced ammo OAL caused by loading and reloading the same two rounds over and over. The sequence goes something like this: remove the mag, cycle the chambered round out to unload; put the mag back in to reload; cycle in the next round; then put round no. 1 back in the mag. Typically, these two rounds could go through several load/unload sequences. The OAL of those two rounds may be reduced even after the first load/unload sequence. Seating depth is commonly .020" to .030" deeper than it should be in rounds that have suffered this abuse. When the OAL is reduced this much, the feed angle changes enough to present liability problems. Such rounds can also produce dangerously high pressure levels. This problem is one of the suspects in .40 S&W kaBooms! So to prevent this, keep a close watch over your loading/reloading procedures and make sure that a round is not bumped against the feed ramp -- no more than once. Move rounds that have been hand-cycled out of the load/unload sequence. Closely inspect your carry ammo to make sure that OAL hasn't suffered. It is recommended that you not carry the same ammo for more than three months under any circumstances. [JT]"