Any jams I've ever had are tracible to ammo or limp wristing. Some pistols just don't like some ammo. You find out by shooting it. My Gen 2 Glock 17 hates steel cased ammo, especially Wolf. 1000% reliable with anything else. Sure, you can work on the gun to make it feed the ammo, but it is easier to just not buy that ammo. (Edit: Related to ammo is magazines. Sometimes mags get damaged, and won't reliably feed the gun. Number your mags and keep track.)
Limp wristing is entirely technique. You just learn to lean into the recoil and it will always cycle.
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