Ask your self this over the past 500 years which side of the gun have builders been putting the lock on for right hand shooters? Why is this?
Even if you can shoot a right hand gun from your left shoulder why would you bother, left hand locks, finished guns and kits are all available and come at no premium.
If you shoot/hunt/compete with right hand shooters you will be extra welcome with the left hand vented gun. Lot easier to find room in a blind or fort for a left and right then for two rights.
For the hunter there is a lot less movement reaching from the trigger to the #### if the lock is located on the proper side. maybe splitting hairs on this argument but it is something to consider.
Basically there is no compelling argument why a guy should spend the same money on a gun that puts the vent on the wrong side when he can just as easily get a gun with the vent on the proper side.
Now here is the Brand spanking new never been published left hand insight:
When you carry a right hand gun at trail in your left hand where is the ####? Yep against your thigh waiting to have an accident or waiting to have the frissen brushed enough to spill your prime. Like wise when holding the right hand gun in two hands across your breast as you would while stalking where is the ####? Yep right there trying to get fouled in your possibles bag strap, button holes, shirt pocket, binocular strap etc. When sitting with your rifle across your knees and your hand on the grip where is the ####? Yep resting on your yours, I think you can see that while "shooting" a wrong handed gun is just a matter of glasses and prudence, working/hunting with a wrong handed gun has more implications than the 4 most common internet opinions would reveal ( a search on this topic always reveals the exact same thing but no one ever actually thinks about it) Wait for it cause by the time I am done this post someone will write: What about double barrelled flintlocks...........
The other un considered factor is standing there with a right hand gun held left handed with a FTF. Lots of fun taking a right hand gun off your left shoulder in that situation. No, delayed ignition (beyond prudent hold it down range time frame) is not common or likely, but either are most things we worry about.
Hwally: In the old days, if you were wealthy and left handed or missing your right eye you bought a left hand gun. If you were poor you learned to shoot right handed. Ever see a military firing line with 10 % of the guys holding a brown bess on thier left shoulder? The historic commonality of left hand sporting guns is on par not with the amount of left hand guys but with the amount of left hand guys with money.
yes this topic is one of my pet peeves LOL