I believe I added all the appropriate caveats to my original post on the matter. It is just that this particular situation just isn't in my opinion one to get anyone scared as most ammo switches can be.
I don't recaly ever loading or firing an incorrect cartridge into any of my guns accidentally over the years. I have fire formed some specific rounds into other wildcat rounds but none in which it is not the accepted means of doing so such as firing a 223 Rem in a 6mm TCU, 6.5 TCU or 7 TCU chamber to fire form the brass for the wild cat. I do confess to firing a 22LR in a 22 Magnum chamber just to see what would happen. Curiosity got the better of me. Just so ya know the case is blown out a bunch and will split. If your gun doesn't handle escaping gases well this one isn't fun to try and proper eye wear was worn.
But the safety measures I keep in place when shooting do prevent me from shooting the wrong ammo in the guns in use.
On my range I have a shooting bench and a storage bench. All of my equipment not in use goes on the storage bench and only the firearm and ammo I am using at the moment make it to the shooting bench. Once I'm done with that firearm/ammo it goes back to the proper location off the shooting bench. I do double check that the gun/ammo are a proper match before loading.
I take both my reloading log and my shooting log to the bench with me. My reloading log has notes in case some specific load is intended for use in only one or very specifically NOT for one of my guns. All shooting results are recorded in the shooting log along with notes if I feel recoil is more than I want in that gun or some such.
Some times one gun of a specific caliber will not work well with ammo that does fine in another. One such instance is my two Ruger Blackhawk 45 Colt revolvers. The one designated in my notes as the buffalo grip gun cuz it has the scrimshawed buffalos on the grips will not take the RCBS 45-270-SAA bullet loaded in a full length case but my flat top 45 Colt will. So my loading log notes which lot of ammo is for which gun. Those for the buffalo grip gun are loaded only in slightly shortened Hornady cases and also have a note to that effect right in the box with the ammo. The ammo loaded in full length cases with that bullet again has a note in the loading log and in the box with the ammo that it is for use in the flat top only.
It is encumbant on all of us to make sure we develop a routine both in our reloading area and at the shooting bench that makes certain we create same ammo and that we use that ammo only in guns appropriate to it.
BUT the real world facts of life is that there are some limited combinations that tho not PROPER are not unsafe due to the nature of them. If ya don't know what they are and why then just never ever use ammo other than that the firearm is chambered to and keep your eye and ear protection on at all times when shooting.
Bad things can happen even with proper ammo in use. I recall once firing a factory (foreign made) 223 round a Remingto 700 223 rifle. After the round fired my cheek was bleeding and I had felt something hit me. I was unsure what happened but an examination of the fired case showed the primer had blown out and not all of it was still in the case. Some how a piece of that primer had escaped the rifle and hit me on the cheek cutting it. Can you imagine what it would have done to my eye had it hit there without eye protection? When I loaded another round in the rifle it failed to fire. I took it to the local gunsmith to let him examine it to be sure no damage that been done to the rifle. He found another piece of the primer was jammed in the hole the firing pin goes thru to fire the round. It was lodged so tightly the firing pin couldn't not reach the primer.
Weird things happen even when using the proper ammo. Worse things can happen when you don't.
