I recently purchased a case of 1k rounds of Aguila 9mm. I have been shooting this brand for 2 years and never had any issues at all. So far In this case I have experienced 3 light primer strikes, 2 with a glock 19 and 1 with a cz 75, no big deal but not common for me with this brand. But today I experienceed a squib. Luckily the bullet did exit the barrel and I found it a few feet away. The empty she'll had a yellowish colored material in it which I assume was from the primer. So, I still have 500 rounds from this case....should I chalk this up to random chance or is it possible there were some quality control issues with this batch? I'm a little hesitant to continue shooting it. Any thoughts on how best to handle?