Sounds good to me bud, that tight grouping is a good sign that the bow is tuned and it fits you and it works for you.
When I first got into bows when I was young I was taught to work up in distances to where I could consistently put 5 arrows into a small paper plate sized group at 40yds, a small paper plate (approx 8-10") is a fairly accurate size to think of to target for the heart/lung area of a deer, i'm old school and when I started 40 yds was the maximum most anyone would ever consider taking a shot at a deer with a compound bow, with todays faster flatter shooting bows lots of guys on tv and even some here take shots on big game out to 60yds and thats cool if they are that good. Its not just about your bows ability to shoot accurately to 60 yards but your own ability including dealing with any wind and any objects like brush etc. between you and the animal.
Whether a deer is too far for your ability with a bow or there's no clean shot because its chest is covered by brush, etc. you don't want to injure an animal but to humanly kill it so that it doesn't suffer for days before it gets pulled down by a coyote because it can't run.
Just keep practicing and you'll get where you want to be, if you plan to hunt out of a tree stand then its good practice to mount your stand up in a tree in your yard (wear your camo and fall restraint) and practice shooting down at the target to simulate what it will look and feel like during a real hunt and move the target around the tree and practice the draw and release from side to side to shoot at different body angles.
Take breaks for a few days and try different things to make sure you don't burn out and keep it fun.
On expandable broadheads like the Rage 2 you mentioned - I've never used Rage or any expandables but i've read some about them and some members here claim to have had failure of some expandables to open properly on impact and some people on other sites have had similar experiences with different ones.
It takes the use of impact energy to open an expandable broadhead so its probably more likely if your bow is not very fast or on long range shots that the blades may not open because in both of those cases the arrows will generaly be slower and that means lower energy.
I'm not taking a dump on Rage on this, all expandables use their impact with the animal or target to open the blades so I would say this on any expandable and i'm not poo pooing expandables because when they do open up they let out a lot of blood but i'm just making you aware its something that you may see at some point.
Good Luck !