Yeah! Another gun thread!
I shoot long range "sniper" matches in the PNW as well as tactical and 3-gun.
My current long-range rig is a Remington 700p in .308 in an Accuracy International Chasis. I'm in the process of converting this gun to a switch barrel setup with the option of going to .260. Some of the long range matches limit calibers to .223 or .308.
I occasionally get to shoot out of Helos
I've hit 18" steel at 1135 yds with this rig.
Here are some of my vintage Brititsh sticks: