Thread: Newbie help

Originally Posted by PERRISCICABA

Disagree!
As a 7mm Rem Mag owner i must advise that with the factory twist rate in the commercial rifles it is in the hard way to get the total performance the projectile can produce. To achieve it you must load it "hot" enough so the velocity will carry the projectile at long distance without loose the spin and start to tumble.
I do understand that we have colleagues and friends in here that use it and is very successful but they may replace barrels more often than a "traditional" load will do to you.
Just my 0.02c.



Mac

(replace the barrel for a longer one and a faster twist (1-8.5" -1-9") and it will be the dream gun, or if you really want to go "ballistic" with your 300WM just replace the barrel for a little faster twist again(1-8.5" or 1-9") and use the berger 230gr, it will bit the 338 Lapua with 250gr all day(information from "Applied Ballistics")

180 Berger in a 7mm Mag at 2900/3000fps, is hardly going to wear out barrels at a prodidious rate, and if they don't keyhole at a 1000yds, they are probibly not tumbling.......... you might just be having some bad luck with yours - Short and Duley have been on opposing sides of .284 vs .30 for years, both work but the .30 takes a lot more omff to get the same ballistics to be in the same ballpark as the 7.