Practice
Charge the op-rod and mount the rifle in your shoulder. Put your finger on the trigger and pull the slack out. Now let the slack off, now take it up again. Notice you have a VERY nice two-stage trigger. When you pull the slack off the first stage and it firms up...that's where the second stage is going to break and the rifle goes BOOM. Or CLICK if there isn't any ammo.
Dry firing doesn't hurt a Garand. Practice dry firing, pulling the slack out, then focusing on the front sight and breaking the second stage and making the hammer fall.
WHEN THE SECOND STAGE OF THE TRIGGER BREAKS AND THE RIFLE GOES OFF (I'm yelling on purpose), HOLD THE TRIGGER ALL THE WAY TO THE REAR UNTIL THE RECOIL SETTLES OUT. (This goes for rifle, pistol, muzzle loader and shotgun by the way. I bet it even goes for suicide vest bombs, 155 Artillery pieces and sidewinder ATA missiles.)
Then release it. If you are shooting a rapid fire string, just release it JUST enough to feel it reset..(makes a distinct click that you can hear and feel)..not all the way off the first stage!....then pressure it up again until the rifle goes off HOLDING IT ALL THE WAY TO THE REAR UNTIL THE RECOIL SETTLES OUT.
When I am shooting Highpower Rifle standing, (or Bullseye pistol), and let me mention that I am a High Master Distinguished NM team shooter, a repeat state champion, blah, blah, blah, (since you asked), I hold the trigger all the way to the rear until I take the rifle out of my shoulder or in prone until the target goes down. Quit moving your trigger finger so dang much! If you want to feel it, mount the rifle, pull off the first stage, focus on the front sight, break the second stage, (CLICK...hammer falls) hold the trigger all the way to the rear, re-charge the OP-rod with your non-trigger hand, then slowly release the second stage of the trigger until you feel it reset. Hold it at the firmness of the reset. Then focus on the front sight and pressure up the second stage until it breaks again.
That's the way to control a trigger.
With ammo in it on a range, the Op-rod will reset itself. Gets down to just you, the front sight, and the second stage of the trigger. Front sight...trigger. Front sight...trigger. Front sight....trigger.
Wait till you try this with a Glock, a Highpower or a 1911. It's cool.
And while you are dry firing, charge the op-rod, put the safety ON, (backwards inside the trigger guard) then try to fire the rifle. It shouldn't fire. Then flip the safety forward and try again. It SHOULD fire. Check that safety!
OK, now you know everything I know. That will be five bucks please.