You could simply set your rifle up to clean bore hitting. This is a lot of work, but a lot of people do that. You start with your CLEAN rifle and shoot one shot. Then go clean your barrel again. Then shoot One Shot. And again and again, until you know exactily where that first shot on your clean barrel will hit. Then you have to make that first shot count.

Of course you know where the rifle hits when fowled, but an 8 inch difference is a lot of difference. You could look for a first shot projectile that matches the fowled projectiles on the target. This might mean loading a powerbelt for instance first, and then an XTP for the following.

Try this, start with a clean barrel and load. Then with a patch, LIGHTLY put a film of bore butter in the barrel. I have read posts that claim this makes the first shot hit the same place as the rest on a fowled barrel. That way you could leave the clean rifle loaded and not have to unload every day in your situation.

I am testing the Sheath for the same properties, as LEE described. He is the one (among a couple others) that suggested this, and since he has always had good information in the past, I am more then willing to learn.

Today when I shoot, I intend to clean the bore with an alcohol Swab and then two dry patches. After that I am going to load. Then I am going to swab the bore with a patch lightly coated with Sheath. My White normally shoots the first hit 2 inches off. I want to see if I can repeat the yesterday testing and get the same POI as the first through the last. I will report back the findings...

Good luck.