Oooh no it has before. You have to hold it just right and not push your luck.
I hold near the center and make one good solid strike near the mid or bottom of the lip. Ususally I'll just get a nice opening. Now if I try to widen it I can crack the whole thing. Honestly your gonna want to tap it but that won't work, best to give it one good whack and hold near the area not at the top.
You will break some, just get them from walmart because they are pretty cheap there. I wouldn't spend alot because I know I'd break them.