I think I've told you before, there are no dumb questions!
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If your jams were because of limp-wristing, it isn't necessary to understand the physics of it, because the cure for it is pretty simple. The part of this video that I want you to focus on starts around the 2:00 minute mark, where the instructor is demonstrating what positions both of your hands should be in.
Pay particular attention to when he rotates his left wrist forward, aligning his thumb exactly parallel to the slide just underneath it. Just getting your hands in that configuration and applying a firm grip with both should eliminate any failures to feed (FTF) or failures to eject (FTE) associated with limp-wristing. Make certain that your weapon is unloaded (meaning, double, triple, even quadruple-check it), and you can practice attaining this grip at home until it becomes second-nature. In fact, there's a whole lot of things you can practice at home, gripping, dropping and reloading (empty) magazines, dry-fire exercises for proper trigger control, drawing from your holster, all kinds of stuff. Just stay obsessively aware when you're practicing anything at home,
no live ammo anywhere near where you're doing your exercises.
Bill mentioned the possibility that the jams could have been because both weapons are new. That is true. Most weapons need some minimum break-in period before they run like a well-oiled machine. If you have an improper and/or weak grip when firing a weapon, your wrist can "flop around" for lack of a better description, bleeding off some of the inertia needed to fully actuate the slide. That is the basic explanation for "limp-wristing." Even a minor amount of limp-wristing on a new weapon can exacerbate the potential for FTEs and FTFs during the break-in period. Mastering the grip demonstrated in that video will eliminate at least that as the cause of any FTEs and FTFs. The break-in period will take care of itself as you continue to send lead downrange.
Hope that helps.
Blues