Strikefire Red/Green Dot Not Crisp
I ordered and receive a Vortex Strikefire Red Dot sight from PSA and was getting ready to mount it. I took a closer look and noticed that the dot isn't crisp and is some what oblong. working with it for a while and depending on whether I'm focusing on the dot or on a target the dot clears up. Is this normal? Is there a learning curve to using dot sights?