The fastest way to reload that I know of does not require me taking my eyes off of the target, this includes pistol/magazine, revolver/speedloader, revolver from loops or pouch, shotgun, or an MP-5. I am 49 years old and not as quick as I once was but, I can reload faster than at least 75 - 85 % (if not more) of those with whom I work and train and; I never look directly at the gun or ammo while doing so if I can avoid it.
Whether or not you think you have disabled a bad guy you should be looking at him as much as possible (note I said as much as possible) and should be doing a quick scan for more bad guys & good guys every now and again, and should be assessing the whole of the situation as it happens (the only reasons to ever take your eyes off of a threat until you are certain it is neutralized). The fact is that very many, if not most, armed assaults include more than one bad guy. The short amount of time it takes you too watch your gun as you reload is enough time for lots of bad things to happen. You may think you have disabled a bad guy by shooting all 16 rounds in your pistol at him because he went ugh and went down and dropped his gun. As you refocus on your gun, the bad guy who was wearing body armor, sees you do so, grabs for another gun and comes up firing. Would you really be ready if your focus was on your gun instead of on him? Would you be reacting to his firing or to his focusing on you - which would be better, which would be possible if you were looking at your gun instead of at him.
There are also other concerns. This can include a new threat popping up, one of which you should be aware. It could also be an LEO arriving on the scene gun drawn without announcing him/herself. It could be the need to seek cover or better cover and distance. If you were not behind cover when you unloaded your mag at the bad guy shame on, or unlucky for, you but make for it now as you reload. Your eyes should not be on the gun but should be scanning for threats, scanning for cover, assessing the whole situation.
As far as taking your eyes off of an immediate threat in order to scan, yes sometimes that is what is called for. If you shoot a gun and are confident that you hit him, he may or may not still be a threat. You may think you have only to have eyes for him. The thing is though that if you are behind cover as you hopefully would be you then scan rapidly for other threats. There could be one even more immediate of which you are unaware because you have locked into tunnel vision. It happens and it kills. I never meant to imply you keep your eyes glued on the one threat, you have to know when you can or should scan the area for more or, you have to know when to scan for cover or better cover all the while trying to get distance and cover between you and the bad guy.
The only time I have shot a bad guy (actually shot not just shot at), he was right in front of me holding what I thought was a sawed off rifle. He told me don't move m----- f---er. I moved, I shot him. As soon as I shot I scanned to my right because that is where the car was that this guy had just exited and because a voice inside my head (yes my own voice) was screaming at me that I should not get tunnel vision. Well as I scanned, all of a sudden there was that car, with a guy in it. His accomplice was trying to get out of the car with a revolver in his hand. I put one in the windshield at head level, the guy in the car took off in reverse. I immediately came back on target one who was bent over trying to get into the car just as it sped off. He ran after the car and the other guy waited, they took off. I was ok.
I never aimed my first shot (it connected). My second shot was point shooting it did the job. What would have happened if I had taken time to actually aim (it was pretty dark, so sort of the same time it would take to look while I reload)? What would have happened had I just looked at the immediate threat. I don't know but I can tell you what I do know. While I was looking at the first threat and assessing him, all I saw was the gun he was holding because I looked for his hands. I knew there was another guy in the car which was only about a foot or two to the right of bad guy number 1 but, the whole car had disappeared. Not because of any blind spot I think but because of tunnel vision. Although it was, or should have been in my peripheral vision it literally had disappeared from my sight. Tunnel vision is an automatic bodily response to an immediate threat. I shot I scanned, tunnel vision was destroyed as soon as I moved my eyes toward the other possible threat and, while I focused on him I still had the bad guy number 1 in my peripheral vision and I focused back on him as soon as the second shot went off. If you focus on your gun to reload, you may actually develop tunnel vision on your gun as you concentrate your visual focus, physical ability and mental ability on reloading it. This would be a very bad thing tactically. I only broke my tunnel vision by scanning back and forth between the threats. It seemed like an eternity but was probably only a moment.
While all this was happening there were two other things that happened that scared me as much as the bad guys. I do not like to think about them because they are very scary for me. They show how the mind can play tricks on you under stress. For a moment, as I looked at the threat's hands, I thought bad guy number 1 was holding a soda bottle like a gun. I swear that for a moment that seemed like an eternity as I focused on his hands and the 'gun" I saw its metal finely threaded end with 30 caliber sized hole turn into a plastic soda bottle. I felt relief and then heard a booming voice command me "Its a gun FIRE". It was my voice inside my head, my training telling me to shoot and not to aim, just to shoot. I shot almost as soon as I cleared leather. Then, as soon as I shot, I thought my gun had malfunctioned - crap it breaks me up as I write because I thought that was it for me. I did not look at my gun except as I brought it up on the second target as I scanned right. I think I tapped but know I never racked because I saw it was in battery while I looked over it at my threat. It was very important at that point for me not to look at my gun directly, not to focus on it, because there was that other guy and I had to determine how much of a threat he was and then look back at the other guy too and, then look for cover all pretty much in the same second. I knew I could tap rack reengage if I needed to without ever looking at my gun. I knew I could strip the mag and reload if I needed to without ever looking at my gun. I knew where my focus had to be and it was on multiple threats not on my pistol. I squeezed off the second round almost praying it would fire which it did. As it was the recoil had felt funny, hell the whole thing felt odd, I was on super high alert and every little thing was registering. You see as I had been walking down the street, this car pulls in close to the curb but not close enough to be parked just in front of me a few steps. As I walked on, all the bells and whistles went off, I realized something was wrong. I had actually removed my right glove without realizing I had done so. Then I placed my hand on my pistol and kept walking. As I got next to the car the passenger got out staring at me and sort of hunched over. I looked for his hands and they held a sweater. He pulled the sweater back with his left hand and his right was under the sweater further back. As he pulled it back he exposed what appeared to be a sawed off rifle barrel thread at the muzzle end. I kept moving hoping for cover -as it was I was headed for a light pole - not much cover or concealment but better than none. Then I shot as described above. The reason I thought the gun had jammed was probably due to the fact that the recoil felt so weak because my right hand cushioned my left hand or because I was all pumped up with adrenalin (I am not 100% sure I had a two hand grip when I fired the first shot, but I did as I fired the second and I then realized my glove was in my left hand cushioning the recoil. I dropped the glove so as not to allow it to get caught in the slide but luckily I did not need to fire more anyhow.
I also have been ambushed by guys intent on hurting or killing me with of all things rocks and chunks of concrete. I followed one guy to effect an arrest and as I did, another bunch, maybe 8 or so, ambushed me. It was a planned set up. They all started throwing rocks and chunks of concrete at me. I was lucky because I had scanned the area. I saw them just before the first rocks came hurtling and I gunned it, the engine of my ramcharger that is. I wound up chasing them all in the Ramcharger I was driving. Great as a guided bullet. They ran south to Mexico. When I got close to the fence I was all eyes on the threat when suddenly a new group also waiting in ambush for me started to hurl rocks at me. One hit my windshield and sprayed glass into my eyes. I tried to turn off and as I turned hard right (could not turn left because of an obstruction) my vehicle stalled. I was now broadside to the fence and the rock throwers. When I drew my blue steel revolver (man those were the old days) I kept scanning my threats. I fired at one guy who seemed the most immediate - he was closest and was cocking his arm to throw. I had glass in my eyes at the time from my windshield (I was in my vehicle) but I kept my eye on the threat as well as I could. I missed (did not find out till the next day) - too bad that glass was in my eyes but, the shot had all the effect I needed, they all ran.
Any bad moves by me? Sure. I was young and not as well trained or experienced as now. Good move to watch my targets sure it was. Good move to scan, sure because I actually saw the initial group of guys just before the first rocks were thrown and was at least ready to take action which consisted of me driving at them and that caused them to take off and stop throwing rocks. (I could only have done that or reversed and I was on a top of a river bank to my left and driving in reverse would quite possibly have me in the river). I had to know where the threat was to do so. Bad move not to be scanning when second group started rock chucking, sure it was. Just that extra moment of concentration/tunnel vision on the guys I was chasing and I did not scan for more threats and almost got hurt badly. I should also have pulled off sooner once they were on the run, and then called for backup. I was a brave fool. I was lucky the glass only rested on the bottom of my eyes above the eyelashes. No injury, very lucky indeed. Sure this is not the same as looking at your gun while reloading, but it is the same in at least one regard. That is you are focusing completely on something that is not at all necessary on which to focus. I did not have to completely focus on retreating bad guys without looking for other threats, and no one has to focus completely on reloading and lose an opportunity to watch the threat or scan and assess. If you have to give up focus on a threat, don't do it for something like reloading, do it to get to cover or to assess for other threats.
You want to be looking at the threat and scanning for threats because threats kill you. You don't need to be looking at your gun to reload, nor to reload faster. I cannot stress enough the importance of looking at the threat, scanning for other threats or for back-up and, looking for cover - to assess the situation, as much as you can possibly do so. It would be a waste of your assessment power and a waste of time to look at your gun or ammo when you reload because you can do it just as quickly, just as efficiently, without ever needing to focus your vision on it unless your gun has jammed so badly it cannot be cleared without looking at it.
All the best,
Glenn B