Well OK !
Randomly, as it comes to me:
- When I tried a 1911 at the range it worked just fine. In competition I found that my thin, boney hands often failed to depress the grip safety. I got out of 1911's for a while until I discovered that there were different size and shape grip safeties available and .... ways to tune them for greater sensitivity. I now like the 1911, at least the one I own.
- Beretta M9, that safety isn't problem when one has time to think and deliberate. But, under stress? I thought I would decock and off safe while load and make ready then holster. But under stress I forgot and a dead trigger was the result. Now I leave it on safe and I learned to off safe on the draw, always works for me.
- Glocks, At the firing line they shoot just fine for me. In competition, while trying to shoot quickly, my shots gradually creep left. DA revolvers don't do that, DA/SA semi's don't do that, at least in my hands. I gave 5 glocks a lot of time and ammo, I like them and respect what they bring, just not for me.
- Blackhawk Serpa, A dangerous holster IMO. Again, OK at the firing line but under a timer an accident waiting to happen. Enough said.
- Cheap clip on soft IWB holsters. In a hurry likely to pull out the holster with the pistol.
- Aimpoint Pro red dot sight. I bought it on reputation and found that the dot while fine for aiming off the bench, with all the time in the world, worked OK. But at distances [out to 300m] with a timer the dot was a blur, splotch, sideways triangle, my eyes didn't like it. For years after with the wisdom gained I tried and read about a bunch of different sights. I got good with irons and figured out my zero preference. Come to find out the Aimpoint Comp M4 shows a nice clear dot that I can use when I want to go fast.
All I can think of now.