load two magazines with dummy rounds... set up your phone or shot timer for a two beep duration of say a couple of seconds, less if you can... do a couple hundred reloads with bullets forward, and on a successive day a couple hundred with bullets rearward... keep track of the times you are over the par time of two seconds with each
I started with a single stack .45 and an 8 round mag... that is probably the last time I ever felt the bullet with my index finger... I find that bullet forward allows me to rotate the pistol at or slightly below eye level, guide the magazine into the mag well, and replace my support hand to the thumb forward position in a smooth continuous motion... I use the same motion with the AR, and give it a slight pull to make sure it is seated