When I was zeroing my red dot on my Mossberg .410, I had a box of the Apex Ninja #9 that seemed to vary patterns from shell to shell. I was using a lead sled so I know it was not me. Most times, it takes a couple of shots to be happy. It took me 10 shots to feel really comfortable because I had to shoot the same shot over a couple of times due to pattern differences. I have never had that experience in the past.