It's just been difficult: having a right arm you can't do too much with means it's difficult- at best- to work a loading press, among other things. Lessons learned:
I had enough ammo for general left-handed practice during this time. If I hadn't, it'd have been .22 only for handgun(there was very little rifle practice).
I should've bought a good left-handed holster before the surgery. The one I've been using works, but something more solid would've been better. There is a money factor there, good holsters ain't cheap.
For the first while, when I could hit the range again, it was easier to practice with a revolver; reloading it is every six rounds, but trying to reload a magazine at the time... nope. Should probably have invited daughter to dinner, and "While you're here, could I get you to stuff ammo into all these magazines?"
That modern ammo allows you to shoot without having to scrub the firearm out every time, is a wonderful thing.
Working back up to carrying, drawing and firing right-handed is going to take some time; the PT has helped a lot, but this is a different set of movements than the standard they use, and you can feel every bit of it.
If I'm careful I can use the press a bit now; not for long at a time, and only the single-stage; the progressive requires more muscle, and that's not happening yet.
Last time at the range I used a .22 rifle right-handed for some offhand practice; to say I've slipped in skill is an understatement. Dry-firing practice is called for, which'll help get the shoulder back into shape as well(back to the bit about drawing above).
And now I'm going to get some more of the built-up yard stuff done before the weather turns cold again.