My standards are pretty low compared to alot of shooters to be honest, but higher than alot of hunters i know (one fellow considers himself a sniper for hitting my gong at 100 off a bloody sand bag) for my deer rifle i need to hit a 5" gong 10/10 at 50 standing, at 100 i need to do it sitting and at 150 prone. After that i really dont care.
With my small game load (round ball and titegroup in my 3030) i need to hit the shiny end of a pop can at 25 yards with all 10 shots standing, i body shoot grouse and rabbits, with that load and it looks like i stabbed a pencil through them with 0 meat damage aside from the hole.
Good enough for me.