What Caliber Is 5.7

What caliber is 5.7 – [1]) or the 7.5 fk brno is a bottlenecked rimless centerfire automatic pistol cartridge developed by the czech firearms and ammunition manufacturer fk brno engineering s.r.o. Web the 5.7 looks like a hybrid between the 5.56 and the.22lr. Web when first comparing the 5.7mm vs. It's similar to the.22 magnum. … Read more