Hello Jeff. I see a big problem here. Go to the charts and look at the velocity and energy at 400 yards for the 165 gr vs 130 gr bullet. There is a huge difference because of BC. I have had poor luck working up the XXX bullets in my .243. If you are serious about 400 yard shots...especially under windy conditions, my recommendation is the 165 gr nosler partition or combined technology bal tip or the Hornady interlock/SST's. Jusy my 2 cents. Good luck and regards, Rick.