RE: ballistic tip 7x64
The 7X 64 is the ballistic twin of the .280....
I've loaded for my .280 for 25 years...The rifle has never had a factory load fired through it..
My pet load over the years has been the 140 grain NoslerBallistic Tip...
All reports of erratic performance aside, my .280 has killed about 30 head of big game, from pronghorns to caribou, very efficiently with the ballistic tips..
That includes about a dozen caribou, the bigger bulls weighing 300 to 400 pounds...
If I were hunting elk with it, I'd probably use a tougher bullet, like a Nosler Partition or a Barnes X...The one moose I shot with it, I used a 160 Nosler PT...
But for DEER sized game, the ballistic tip will work just fine..