gaseousclay said:
As a practical matter, that's going to be most of your answer. Reliability has a lot to do with firing pin shape and the force with which it strikes. I will recount my experience over a few decades, but it comes with a caveat.
Remington - people look at me like I have two heads when I say it, but I've had rifles that shoot pretty accurately with Thunderbolt, Cyclone (a hollowpoint) and Subsonic.
CCI - Though it gives me mediocre accuracy, it's the easiest to get to light off when struck. I believe it has a wider rim than some others; I once put together a pistol that would feed anything but CCI from the magazine.
Aguila - I've been very happy with the tens of thousands of rounds I bought several years ago.
Federal - I found it reliable but providing generally unimpressive accuracy, until I found a barrel that does like. Now I'm impressed even with the bulk boxes of Automatch I've picked up recently.
Winchester - In the 1990s, Dynapoints were a great round. They had a very dry wax lubricant, good velocity and were well regarded by casual CZ shooters. Since then, I've never shot a Winchester 22lr round I liked. I had a bunch of Marksman in the bulk box that didn't work well with my Marlin, and more recently 45gr M22 that was too large to chamber in a 10/22 with a Bentz chamber.
Eley and RWS - For the price, it had better light every time.
Caveat - As with any of the reviews you will read, if they date from before the current drought, you may not be able to buy comparable new product. Specifically, I've read people getting CCI and Aguila, what I would regard as very safe purchases, and getting far poorer results than their own prior history would forecast.
