Stopped in at Bullseye Sniper Supply today. Was looking for a spare Beretta 21 mag and some standard velocity .22 loads. Was trying to correct/diagnose high feeding with my Beretta 21.
Got to talking with Mike at the counter and he offered to take the pistol to the indoor bay and test fire both mags with some of the loads I had selected.
He ran both mags and several kinds of ammo through the pistol and (per his recommendation based on experience with his M21) the CCI MiniMags were flawless.
FWIW, he said his M21 broke in after a few hundred rounds of MinMags and would now feed anything.
I bought the spare mag and 200 rounds of MiniMags.
Gun runs flawlessly now, put 50 rounds through it tonight using both mags.
Nice muzzle flash for a RF.