Originally Posted by 7mmsaum
I recently read a article at www.accurateshooter.com/cartridge-guides/7mm/
which compares different 7mm cartridges I like what it has to say about the 7mm short actin ultra mag, but would like to get an opinion from others of which cartridge would be best at around 1000 yards? I would also like to know how long of a barrel to get. I plan on getting one from Krieger barrels.and what twist would be recommend for the cartridge of choice. As far as bullet weight I want to use the 168 or 180 burger bullets.as far as the action goes I'm going to start out with a Remington 700. When it comes to optics I'm debating between Leupold mark 4 lr/t and the nightforce benchrest.
There's really no "right" answer. I shot with Steve Ikeda, referenced in the article above, and he did very good with his 7RSAUM. I've read the US F-Class team is also using that round. A lot of guys are using and winning with the straight .284 as well. I shoot the .284 Shehane (among others) at
1K which allows the use of Lapua brass, a .473 boltface, a little more velocity than the std. .284 and very accurate to boot.
I have both 1-8.5" and 1-9" twist barrels on my .284 Shehanes (4 rifles). They will all shoot 162-180 grain bullets (I live/shoot at ~300' ASL). My lightguns have 28" barrels solely for weight concerns. My heavygun has 30" barrels in a barrel block. Many F-class shooters use up to 32" barrels. If you're gonna use a Remington action, talk to your gunsmith about how long/heavy of a barrel you want to hang off that action.
Not a big fan of the Leupold's. They don't have a high enough power variable for my liking
and I personally know of (4) 8.5-25's that have died during a match (and there aren't that many on the line to begin with). Many BR shooters are using Nightforce, March and Sightron SIII's.
All that being said, if it's not too windy out, I will grab one of my 6mm Dasher's. I think it's inherently more accurate but, I'm not great at reading the wind and 7mm is much more forgiving in that regard. The Dasher currently holds several NBRSA records.