I believe that some firearms manufacturers (HK comes to mind) produce some pistols that they advertise as being capable of being fired underwater. Seems to me that a barrel full of water would have a lot harder time "getting out of the way". Did your instructor offer any solid evidence that a light coating of oil would dangerously raise pressures?Originally posted by EdGCNM:
In fact, that's my question. In the firearms courses that I took, we were told never to oil the barrel--or at least, to remove the oil before shooting (perhaps that's what I'm missing here). The warning was that oil in the barrel would act as a barrier to the movement of the bullet down the barrel and create excessive pressures. The oil could not possibly "get out of the way" of the moving bullet fast enough. True?