No one else will be able to tell you at what range you can effectively hunt with your setup. To determine your effective hunting range for that setup I recommend you do this:
- Determine the kill zone of a coyote. For example, on deer, it's like 8-9 inches (a bit smaller for small deer, a bit bigger for bigger deer).
- Create or buy some targets of that size. Paper plates cut to size will work fine.
- Start shooting at 100 yards, then go to 150, 200, etc.
- When you can no longer put 3 or 5 shot groups into that target, every time, you have exceeded your effective range. Back it off until you find your maximum effective range.
- Forget about shooting a one inch group (or whatever) every time. You only need to be able to place the bullet in the kill zone.
I'm sure some others will have some input. But I think this is a good, basic way of determining your max effective range.