You can make your own modified cases that are more accurate than hornady’s with fired brass, a simple drill press and tap/die set from Amazon. A small screw lathe is great for this too. I’ve been making my own for years. You can measure your jump to the lands easily and remeasure as your throat starts to erode over time. Pretty easy to make the rod too out of brass tube/rod from crappy tire or Home Depot and the corresponding die.