If you look at some of the metrics of powder burn and heat energy, XBR 8208 is a cooler burning powder than Varget. That should help prolong barrel life. My plan is to use a lighter charge of XBR 8208 for my 6 Dasher practice loads to stretch barrel life then run full power Varget loads for match ammo. We'll see how it goes
Got another PVA Dasher barrel on the way. Plus a trainer 223 trainer barrel lol.