My cousin and I just sold 2 Vanguard's. His was a 257 Weatherby and mine was a 7mm Remington mag. Best group we could get was 2 inches. We are both too fussy to settle for rifles like that. I just picked up a Tikka 7mm. Hope it works out better...
I shoot a custom 22-250 and I use 52 grain Hornady's with 34 grains of 4895. Very few will exit a coyote. I've skinned hundreds of coyotes shot with this load...