I have 2.
I read the manwell on how to load the magazines but I'll describe how I do it.
I push the first round all the way back.
Then I don't push the next one all the way back I stop 1/8 to 1/4 from all the way.
Then I use the proceeding round to push the previous round all the way in.
I do have one magazine that gives me trouble.
As far as ammo, after 200 rounds or so, I use nearly anything.
Hornaday 30gr has worked fine.
CCi anything does as well.
Winchester regular superx was fine.
Armsacor brass case was very dirty and pistol needed cleaning sooner.
I had trouble loosing the fiber optic rods out of the rear.
Taking the rear cover off, I used a soldering pencil to mark those up so they can't come loose.
Tried a cheepo electronic site on one but the recoil crapped it out in short order.