Originally Posted By: forty five
I got my 6x45 shooting Sierra 70 grain match kings half inch at 100 yards using ramshot tac in a 12.5 inch AR.
My velocity is 2735 average with 10fps ES.
Is this a good load for varmints.

Yes. I took a coyote this spring with pretty much the exact same set-up. 12" X-Caliber barrel with the 70gr SMK's, but with different powder (I don't have my notes in front of me). Very accurate and handy set-up.