I just put together some 45gr SPs over a charge of 800x for cats and close coyotes.
Data is available for lighter loads with 800x and Bluedot on the Calhoun bullet sight. It is in an article called "To Bee or 223" or something like that. My standard load is a 52gr bullet and is zeroed at 200 yards, the 45gr load hits dead on at 100 yards with the same sight setting. It is nice to be able to switch loads without having to freight the rifle.