It's more the way you hold the pistol than it is arm strength. It is easier to show someone the correct posture than it is to explain it. Chances are that your wrist is rotated outward away from the plain that your wrist bones form and that your grip is too "relaxed".Is there an exercise that will help strengthen the wrist? I want to strengthen my weak hand for shooting from my weaker side.
I just returned from my place in N.W.Pa.Every August,we have what you might call a block party .Good food ,good company,and good local shooters.Every make,model,and caliber pistol known to man.We target and trade and the glocks perform extremely well.I give my G17 to a smallish lady to test and within 3 shots,stove pipe.I clear it and return it to her.3 shots,stove pipe ! I personally have never witness such any glitch,burp,or fart with my G17 before.I clear it,relaod,and fire off 15 rounds as fast as I can pull the triger.Not a fart.I load my G20,hand it to her,1 shot,she drops the gun,I pick it up,stove pipe!!!!!? Both guns had been fired several times by other shooters with no problems through-out the day.I just do not know?????