I have 5 mags for my CMMG .22 LR conversion kit. I use it for practice with my LMT 11.5" SHORTY, with a 1/7" twist. For maximum reliablity, I usually load only 25 rds in each mag. 5 X 25 rds = a pretty long practice session at the range if you are paying attention to each shot
With Winchester Dynapoint 40 Gr copper washed .22 LR ammo, the cheap bulk packs from Walmart or Canuckistan tire, I get my best reliability and accuracy. 2" groups at 25 yds is NOT as good as a decent Ruger 10/22, but more than good enough for cheap AR practice. Reliability is excellent, and I CAN USUALLY MAKE IT THROUGH ALL 125 RDS WITH NO MALFUNCTIONS, but not always.
PS: If you are practising double taps or multiople quick repeat shots, make sure you start and finish off your sessions with a few mags of .223 ammo ....
otherwise if you practice with only .22 LR, YOU MIGHT RESET YOUR REFLEXES FOR THE ZERO RECOIL of the .22 LR AMMO.
Practice with only the .22 LR can make you faster, but it also can make you sloppy on your second and follow up shots.
BTDT
[;{)
LAZ 1