I don't do malfunction drills enough when I practice at the range. While I trust the guns that I carry 99%...like you say, there is that chance when you need it that it might not be there. I also do not usually carry a BUG.
This^^^^^^^^^^^^Two outcomes is different than the probability of an outcome. I will bet on the sun coming up tomorrow and choose a gun with as close to the same probability of working.
The one time you need your gun it will be a work/don't work. Not a 99 out of 100 as if it doesn't fire the first time you may not get a second try during a defensive use. Just because it had been fired 500 times without issue does not mean it will fire on the 501st. Each pull of the trigger had the same chance of work or fail. While 500 rounds may inspire confidence in reliability it is also 500 cycles that increase wear. I am only really talking about one individual shot... Each shot is a 50/50. While a history of reliability would seem to predict a future of reliability it can also show that the chance of failure increases with each pull of the trigger. It is this way with all mechanical things.... The more usage and wear the increased opportunity for failure.Your 50/50 is just wrong. If you pull the trigger 100 times, and it fails once, that is a 1 percent failure rate, or a 99/1 chance of firing the next time you shoot. You can factor that out to any reasonable number. Depending on the gun, I use differing standards. A good revolver, including Taurus, I'll shoot 100 times before carrying. A glock, perhaps the same. An "off' brand, or a brand I'm not familiar with, maybe as many as 500 rounds.
50 new guns? Give me a couple years to "research" and I'll get back to ya.How does buying 50 new guns figure into this amazing equation?