My heavy barreled Ruger likes Remington cases, sierra 85gn bthp's, with 46 grains of IRM4831. It will shoot almost the same hole at 100 yards with this load. Neck size only after trimming the brass, and seat the bullet out till it just touches the lands on the rifling. A wilson bullet seating die will give very little run out. This is a very accurate load, but on crows at 200 yards, the only thing you'll see is his ghost as they vaporize! If you don't want pelt damage, I'd try loading down one of the 100 gn bullets to around the 2300 to 2400 fps range. Sorry, don't have a load for that.....