haertig..i plan to have the first two rounds in my pistol as blanks.the company i got them from said expect a major muzzle blast.the next four will be bear loads.
i have never had a problem bear in all my years canoe tripping but rather than bang pots and pans together,a normal anti bear method,i thought a good loud BANG would do the job.
i should mention i would never shoot a black bear unless it had me by the foot dragging me out of the tent or something.
the use of blanks came to me after meeting a bear guide on the last canoe trip.he said a shot bear will run from the sound of the gun and drop dead,he hopes,in a hundred yards.a bear darted with a arrow won't run but will stand around the area until it drops.
I really think you should rethink the idea of carrying two blanks! A blank won't do anything a live round won't do but the reverse is not true! If you want to try noise you can fire live ammo into the ground or (carefully) the air.
My concern is that you could end up needing to employ your firearm on very short notice and at very short range. In that event you'll love precious time and waste your already-limited capacity. You don't mention what sidearm you're carrying but most of them hold six. Some hold seven and a rare few hold eight.
If you ever need the gun it will be hard to remember how many rounds of what you have in the gun! I realize you're not talking about a "gunfight" but stress is stress. In many police shootings officers have no recollection of how many rounds they fired, and sometimes don't even know if they fired their firearm or not!
One last comment- I am assuming you're talking about a revolver. If you're carrying an auto then I definitely wouldn't advice blanks! They won't reliably cycle your firearm.
If you're married to having less-than-lethal loads under the hammer, consider shot shells. They're still not advisable but will have more effect than blanks if you accidentally use them thinking you have regular ammunition.