I rebarreled a rifle to a 308 Norma Magnum.Mine has a 26" barrelled and it is about the same as a 24" barreled 300 Win Mag.Really easy to get over 3100fps with a 180gr bullet.The data you find for this round is very limited because most of it was established years ago.Quick Load Data I had run for my rifle with modern powders will open your eyes to how good this round really is.Quick Load is showing 3190fps with a 180gr Nosler Ballistic Tip with 77.1grs of Reloader 26 loaded at 63250psi out of a 26" barrel.

~Molɔ̀ːn Labé Skýla~
As Bob Hagel would say"You should not use a rifle that will kill an animal when everything goes right; you should use one that will do the job when everything goes wrong."Good words of wisdom...............