I know it's not a surprise that different ammunition brands are going to effect the zero of your scope/dots or any other sights. However, I was really surprised to see at just how much if effected it. I've got my scope zeroed for 32gr Winchester super eXtream HV hollow points but couldn't get anyone at Walmart so went to Canadian tire an they only had a box of 32gr federals in the 525 value pack. I figured since they where both the same weight and I was only shooting at 25 yards the zero would be off my only a minutely small amount. After firing a couple of mags I was proven to be extremely wrong. Was anyone else surprised by the amount the zero changes when using a diffrent brand at even 25 yards?