Ruger - I know shooting a riflewith a heavy trigger accurately is tough to say the least. So until you get the trigger done, take a bit of advice.
Be sure you have a solid bench.
Have the forearm cradled in sandbags or 'rabbit ear' shooting bag. (preferrably on a vertical adjusting platform). Be sure to position the forearm on the bags at the same location on the forearm each time
Have the stock setting on bags also.
After loading and putting On Safe, settle into the stock. Get comfortable. And pull the stock back into your shoulder tightly with your shooting hand. I like to bring my off hand up and cup the fingers of my shooting hand (as if I were shooting a handgun).
Don't try to muscle the crosshairs onto the target. Adjust the rest/bags as needed.
Now flip off the safe - take a breath. And focus on the target. Before you start to squeeze the trigger, pay attention to how much pressure you are pulling back into your shoulder and your cheek pressure.
Squeeze the trigger until the shot goes off. If the crosshair drift, just stop applying pressure to the trigger and then continue when they are back on target.
I know this sounds a bit windy but I'm trying to be as helpful as I can, not know your shooting experience.
But please note, That any change in pressure, either from your cheek, shoulder, forearm on the bags, etc. will all change the point of impact. The trick is to try to be as consistant as you can shot after shot.
Hope this helps. And again, I didn't mean to sound like I was beating a dead horse. Just trying to help out.