Hi Smaug,
I have a few general comments and some specific comments about your last post. I empathize with your situation, especially because my wife is left eye dominant and right-handed. Based on your replies, I would highly recommend professional training for your wife before going further. I am talking about someone of the type who trains brand new police recruits, preferably having some revolver experience. People with little prior experience, and especially women, don’t have bad habits to unlearn. It is a lot harder to train someone that already has developed sub-optimal habits because they first have to be unlearned. That funky stance to make cross-dominant shots can really be a hindrance to learning and could be especially problematic under life-threatening stress where the body's fight or flight reaction kicks in and precise technique goes down the drain. Sure, some people did the crossover stuff back in the day before the isosceles stance, but that takes a lot of adaptation. Your wife may be a future expert on a new technique, but it would take a long time to get that down, time that she may not dedicate to getting it exactly right every time.
The isosceles is perfect for the cross-dominant shooter because the gun is aligned with the center of the head, and it works with using either eye.
Well, we'll have to move slowly here. I figure a revolver she feels comfortable with is still better than an auto that she needs me to rack and that will stovepipe jam on her. She can load, unload and shoot them without any jams.
An instructor can teach a number of techniques. Even a table top technique if she doesn't have the strength with her body. The best solution is to find the right gun. In a worst case scenario, just leave the gun loaded. But, the gun has to be vetted to be sure it can be fired with even a weak, support-hand grip. I will usually loosen up a gun with a bunch of ammo and do limp-wrist tests with my support hand before allowing an occasional shooter to test it out for real.
I'll have to try this charging drill and contact shot training next time we go.
I wouldn't do the charging thing until she can accurately fire the gun with decent hits at a stationary target with decent speed. Doing that is rather deflating to many, so the temperament of the individual is important. You don't want to scare them, you just want them to understand that things happen fast. Contact shots are fun, because they can see what the blast does.
I wonder if my wife could get a better grip on a Glock slide than a P365 slide...
You have both, so try it. The .380 version is slightly easier to rack than the standard P365, but not much. It may be enough.
My wife has kind of a loose grip; how far in does the grip safety on the EZ need to be pressed? I would go down toe 380 if I had to, but if she can handle 9 mm; that's preferable for a few reasons.
That could be a problem. I would rule out the EZ for now on that basis alone. It is not difficult, but you have to hit it right. Also, if you hit the grip safety wrong and pull the trigger, tightening the grip safety with the trigger pulled will not fire the gun. You have to reset the trigger and then pull it again. (This is different than a 1911.)
As far as going down in caliber, you get faster follow-up shots. I clobbered my standard 9mm P365 (with a Holosun 407K X2) with the .380 version (open sights) when doing a Dicken drill. (40 yards, 10 shots, 12 seconds, USPSA target) The recoil difference impacted accuracy and speed.
She can't seem to get the hand overlap thing. She keeps trying to move the support hand up the gun to where I'm worried she'll get flame-cut. I tell her, but she goes right back to it. I don't want her to get hurt, so I'm letting the teacup hold go for now. I figure it's better than nothing and better than getting hurt by the gun.
A good instructor can teach the correct grip. When you say hand overlap, I cannot tell if you are referring to a thumbs forward grip or whether you are talking about putting the support hand thumb over the firing hand grip. That is a no-no for semi-autos and a recipe for slicing a thumb and/or retarding the slide during cycling. The thumbs forward grip can be an issue if it puts the support thumb near the cylinder gap on a revolver, but I haven't had any trouble using it with a revolver except with the tiny NAA guns. It's a matter of looking at it with an empty gun to see if it is an issue.
BTW, it sounds like the only issue with the Glock 19 is racking the action. Maybe some light-for-caliber ammo (90 grain) and a recoil spring change could fix that (after proper vetting, of course). I think that Hornady makes a Critical Defense light round.
I hope that you get it figured out. (I will be without Internet for a few days if you write again.)