Glamdring, The Bbl on the 308 is 22", 26" on the 7STW. I am using IMR 7828 powder in the STW but I think that I will look into the RL 25 when I can.
JerryM, The rifle is sighted in at 300 Meters. The bullet drop at 800 yds would be in the neighborhood of 280" Iwas using M118 Ball ammo which uses a 172gr. projectile at 2640 fps. The trick was that the coyote was running on our firing range near a large cottonwood log that I knew was about 800 yds from me! I dialed in 800 yds on the ART II scope and the M21 pretty well did the rest of the job.
Did you really have to make me tell all of the details and make my great shot into a no brainer?
And yes, the rifle was bagged up to the max and there was zero wind and minimal mirage thank you