I just got a new Pac Nor 280ai barrel, and I had it made with a 1:8. I bought 2 boxes of those 168 grn Barns LRX, but haven't tried them yet.

I had my barrel throated for the 168 Berger VLD, I'm hoping I'll have enough throat to seat those LRX bullets also. They are super long… But we'll see. Barns did send me some load data for the 280ai and the 168 LRX.