Well for starters, welcome to LRH. I am going to direct you to accurateshooter.com and 6mmbr.com (sister sight). These are some great sights to find good information on bench, F class, and F/TR class rifles and shooting. I think that instead of a 223 (especially for 1000yd) I would suggest calibers in 6mm. I really like the 6XC with 115grn bullets, 6mmbr would be a great round for ranges out to 800. 6.5mm will also fit this bill nicely in the Creedmore, 260 Remington, 6.5x47 Lapua and 6.5x284. All these are proving to be really good rounds to 1000 and beyond.
As far as rifles are concerned, there are some good factory made competition rifles made by Savage. But if you want to go balls to the wall with your equipment, then custom guns are a great way to go for target shooting. I am a Savage guy and they make a really good target action. The trigger can be set by you from 6oz-1.5#. For good target accuracy you'll want the trigger in the 10-12oz. range.
In the Savage rifles you can check these out. Also you want to look at specifically what class of competition you want to shoot. This will determine caliber, weight of gun, and styles of stocks you choose to use. Here are some of Savages offerings:
Savage Arms Firearms > 12 LRPV Dual Port
Savage Arms Firearms > 12 Palma
Savage Arms Firearms > 12 Long Range Precision
(Good old .243 is quite the competitor now days)
Savage Arms Firearms > 12 F/TR
F/TR your limited to .223 and .308 only in calibers
Savage Arms Firearms > 12 F Class
F class I believe is open to just about any caliber you want (don't hold me to that).
Savage Arms Firearms > 12 Bench Rest
The last 3 I put up all have stocks that are better designed for riding in a rear bag and a front rest with a wide forearm for stability. If you look into heavy gun bench shooting the gun is unlimited in weight and can be any caliber you want.
Hope this gets you started. Welcome to the addiction.
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