Hi all, so got my sig p320c 9mm out for the first time last night. Shot about 100 rounds of cheapo fmj just getting used to it and i was relatively satisfied with my accuracy, by no means my best but definitely not my worse and I was improving and getting used to the new gun. Then I decided to run some carry ammo through it, federal 124 grain hst is my go to, first mag was okay, but not what I expected... second mag was completely junk, like 18 inch group at 50 feet... (all of my shooting was two handed unsupported) then I decided to run some Hornady critical defense 115 grain through it (I don't like this ammo but I had a bunch for some reason) on the pic below that is going to be the group on the head, 2 flyers but I was very happy for the speed I was shooting, dropped the empty mag and put another with the federal in and shot the group in center mass... same lighting grip, and shooting speed. Any idea why the federal group is so much worse than the hornady? I'm assuming it's me I just can't place exactly what I'd be doing differently between the two. Other than shooting my favorite ammo like crap I love the new sig, ran flawlessly and is a very smooth feeling gun.