Hey all just fired my 12 ultra slug and was wondering what groups I should get from 50 yards? I am shooting off a picnic table with 5 to 10 mile winds crossing my path to target. The gun has a muller 2x7 with red dot,and I am using 2 3/4 lightfields, winchester supreme, remmington core loc. How do you all measure group size, center of bullet to center of bullet, farthest edges ? THANKS ALL AND GOOD HUNTIN!!
P.S. ANY TIPS ON SLUGS OR ANYTHING ELSE WOULD BE APPRECIATED!!