Here is a quote from Hilton Yam. "You really need to shoot the gun for 1000-1500 rounds, to include about 500 or more rounds with duty ammunition to have a good feel for what the gun is doing. Do not just put "200 flawless rounds" through the gun and declare that it is "completely reliable." That is not a statistically significant cycle of service."
The platform in this instance was the 1911. When you think about auto pistols in general, there is some concern about it being reliable with different brands or types of ammunition. It may work fine with some brands or styles of hollow point ammo but not another. They are obviously sensitive to different power levels of ammo (hardball vs. wadcutters or other target loads). Revolvers are not sensitive to bullet shape. Ball, wadcutter, semi-wadcutter or hollow point, if it goes into the chambers and the cylinder will turn when you close it, it will probably work. One of the few concerns would be bullets jumping the crimp when fired in lighter weight revolvers such as a 357 model 340 or 44 Magnum model 329. Also, anything interfering with slide movement (such as a barricade) may cause a malfunction. Autos probably are not reliable when fired from inside a coat pocket. Revolvers usually work fine but it is pretty hard on the coat.