If you take the action out of the stock and look over the trigger, you'll see it's a very simple design. All I did to mine was to use one of my small sharpening stones to stone the cut edges off the corners of the trigger where it mates to the sear. I didn't do anything to change the radius or angle, but merely knocked the rough corners down. I also turned about a quarter to a half turn off the spring tension screw. You do have to be careful here, because turning more off the screw will make the trigger unsafe, and it will trip the trigger with a sharp blow to the rifle. I experimented and adjusted mine by turning a bit, and putting it back in the stock and whacking the side of the rifle, and slamming the bolt closed a few times. If you just slam the buttstock on the ground, it will only set the safety to "on", and not really test the trigger.
My trigger still breaks at around 4 pounds, but there's no creep at all now, where it was like 8 pounds before and creeped like mad, felt like gravel all the way back before. There are several aftermarket triggers out there too, if you want lighter, but for me and my purpose 4 pounds works ok. It's just a 'yote calling rifle and most distances are well under 300, usually under 100 yds.
Mine's a 223, and accuracy with my handloads has been exceptional, and that's with the crappy, flimsy, squishy, plastic factory stock that everybody hates. It shoots so good though, I'm afraid to mess with it, so the factory stock stays on mine. Other than messing with the trigger, mine's completely original out of the box.