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F-TR means F-Target Rifle, not F-Tactical Rifle.
Gun
If you just want to do some long distance shooting bring what you got, to shoot F-TR you need either a 308 or a 223; that said, from 1000 yards bring a 308. You can shoot with anything, but muzzle velocity is your friend. Pretty much anyone who is seriously competing at 1000 yards is shooting a 30" barrel. Doesn't mean you need one to start with, just realize that's the norm.
Bullets
Some good match ammo. Load it your self or buy it. !!!DO NOT GET FGGM LOADED WITH 168 SMKs!!! Search it, the bullet will not make it to 1000 w/o going wonky. Don't get too crazy about reloading to start with. You could start out with perfect bullets in a perfect rifle and still drop 25 points in moderate conditions until you figure out wind. Bullets that get there with reasonable accuracy are fine for a long time. Lots of bullets will work, just not the 168SMK.
Scope
More magnification is better, second focal plane is better. If you are shooting factory ammo from a reasonable length barrel and not one of our 30"+ howitzers you will need 34 to 37 MOA of come up from your 100 yard zero. So, get your 100 yard zero, if you can't dial up 37 MOA you need another rail. (you don't want to go to a match and have to hold above the target frames to get on target. )
Bipod
you need one
Rear Bag
Need one of those too
Shooting Mat
I have forgotten mine and used the rear floor mat from my Chevy PU, but you really want to have one.
Spotting scope
You need one to score for other people, and you have to score. I have seen people score on the ground with their rifle scope
There is a thread in here about a bunch of other good stuff to have, it may be linked in the FAQ thread at the top of the page, which I think is a decent read if I do say so my self.