Hey guys, I bought new brass about a year a year ago. I loaded it, fired all of them and reloaded them. I have just been taking a few shots here and there when I get a chance. Well yesterday I got my rig out to shoot and noticed that some (2-4) of the twice fired cases were cracked at the neck. I started inspecting the ,still loaded, once fire brass with disappointment. 7 out of 36 of my loaded cartridges had cracked in the necked. I fired the ones that weren't cracked and all but one cracked. This bothers me for numerous reasons but why are the first dozen not cracked and then all of a sudden they all cracked after that. Specs Ruger 277 mkii v/t 22-250 38.0 gr. H-380 Win cases Hornady 55gr. Fmj Cci br2 Help me out!?!