had a similar problem with different brand not sure which brand cheaper than dirt had federal and another brand in stock. the other brand was 25 rnd box for $1 cheaper than the 20 rnd federal so i bought that one. had an issue with getting the rounds out after firing and also intermittently binding when firing. had to remove spent cartridges then i could fire the others. this did not happen all the time though. never inspected the primer pockets though