welcome,
sounds like a good bow,
if your getting that grouping, that is great off to a good start,
and grouping is good enough to hunt with,
when practicing, remember its that first shot that counts,
so treat that first shot as your only shot, as in the field thats the one that counts,
dont use it as a practice shot, the shots that follow are just to fine tune that first shot,
and thats about you will basically need is some fine tuning,
i would go to a range and practice a bit,
you can see what others are doing in reference to form,
many times if someone with experience see's you doing something thats just not right they will tell you,
10 yrs later and people still tell me things here and there and appreciate it.
also at a bow shop can always ask them best setup for you,
if a longer draw is best can try loop and different release,
as for hunting,
welcome to a great sport/hobby/way of life,
spend as much time out in the woods as you can and you will learn your way around