6.5-300 WBY 156 Berger

I'm using a 140 grain Accubond and N570 in my 6.5-300. I am getting great accuracy with .5 to .75 inch groups consistently and a velocity of 3490 FPS. It took me about 50 rounds to arrive at the load and for final sight in, so now I am saving the barrel for actual hunting. 30 years ago my .264 Win Mag was toast after only about 400 rounds so I handling this barrel with kit gloves
How many gr of N570 u using to get 3490. That's smokin.
 
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