I'm a odd ball and a shoot a 2 3/4" 1 7/16 oz #9 hand load currently with my Affinity 20. Using a .575 Carlson's I'm doing around 245-265 in a 10". I currently run a Vortex Venom on but last year when I was shooting Williams Firesight rifle sights I ran a .585 Trulock with the same handload. It did around 200-220 but was a beautiful even pattern and at 20 it was still extremely forgiving.. I actually loved the looks of that pattern but with the addition of the dot I am looking to go a little "hotter"'as far as the pattern goes. If it is for a 8 year old I'd probably give the factory full a try and if not it, throw a Trulock .585 in and he would be hard pressed to miss a bird!