When they penned the amendment "bear arms" the meant one shot per minute, not 20 to 80 in 10 seconds.
Okay, give me one, just one, reason for a 20 round clip for a hand gun. Or a 40 to 80 round clip for a rifle, or a 12 round clip for a shotgun for that matter. ONE REASON. Well other than shooting cops, our troops or lots of unarmed people in schools and restaurants.