What would cause a line trace to deflect from the crosshairs?

You were right. I had to add in the three different vectors. I will post a screenshot later, when I get back into the project. Basically what I did was…

  1. Line Trace and then Break Hit Result
  2. Find Impact Location
  3. Find ‘Look at Rotation’ between the barrel of the gun and the Impact Location
  4. Get ‘Forward Vector’ of that rotation
  5. Add that Forward Vector * 10,000 + Gun Barrel location + Player Camera location

Everything seems to work fine now. Yay! Thank you for helping and explaining vectors!