02-15-2020, 01:58 PM
I credit some of this to my prep upon receipt. I have (and had) several of the Predator barrels doing the same to all - and you want to remove some of the internal friction (comes pretty standard in a rack grade barrel) by polishing the insides with some JB bore cleaning compound. Do 2 or 3, 1 3/4" swabs (for the 6.5's anyway) with it on there and run them back and forth in the barrel to smooth down the "innards", then clean it out with Kroil or cleaner of your choice, and a little light oil... less internal friction means more powder energy goes into bullet acceleration. I was expecting more like 520 or so but IMO the bore treatment adds 25-50 ft/s to final MVs.
"Down the floor, out the door, Go Brandon Go!!!!!"