I used my Tikka T3 Tactical in .308, topped with a Nightforce NXS 3.5-15X50 NPR-2 reticle, Hornady 168g TAP ammo, Harris bipod, rear bag Swarovski EL 8.5X42 bino (yes you read that right), Lica rangefinder.
Like I said, we were driving in to find a place to camp, when I looked off to the north side of the road and saw what I believed to be a pronghorn. So I drove down the road a little further to a spot where there was a slight rise that would block the truck and our movement. Walk the hundred yards to the top of the rise and spotted this buck laying down. From the top of the rise to the buck was 598 yards. I had not been doing any practice for a 600 yard shot so I decided to move up.
I figured I only needed to crawl a hundred yards and then I could take the shot. Well I crawled the 100 yards but now I was in a depresion where I couldn't see the buck anymore. I had to crawled another 100 yards to a spot where the terrain was dropping away enough to allow me to take the 400 yard shot. As I was setting up, I realized the brush was at a height that I had to have my bipod fully extended. Being set so high I was not able to use my support side fist or grab my bicep high enough to support the rear of the rifle. I emmeadiately went into problem solving mode on what to use as an improvised rear bag. Glancing around I looked at my binoculars and realized that just might work. I grabbed them shoved the binoculars will case and all, under the stock to create a stable platform that was the right height.
I got all set up and laid there on my gun waiting for the buck to stand. After laying there starring through the scope at this buck for about 20-30 minutes he finally got up. Once he stood I slipped the safety off and pressed the trigger. I saw it was a good hit and knew he was going to go down. He ran about 20 yards and stood facing me and started to wobble back and forth, but just to make certain I put one more in him and he hit the ground hard.
So after hunting for 30 years I got to be that guy, who gets to tag out not only the first day of his hunt but before he really starts hunting.