Don't know about all .458" bullets, but currently writing my blog about that -- should be ready in a few days.
The .458 Win Mag is my favorite cartridge. For a long time it was the .45-70 until I gave my Ruger #1 in .45-70 a long throat that turned it into the equivalent of a .458 Win Mag by seating bullets long. Now I have a Ruger #1 in .458 Win Mag with Mag-Na-Porting and a 24" barrel. It has the typical long throat of all .458 WMs, plus no action that curtails COL. It's easily the equal of a .458 Lott -- if wanted.
But now I'm shooting 300gr TSX's at 2753 for a combo bear and wolf hunt. I have pushed that bullet up to 2980 fps without qualms. A 350 TSX leaves the muzzle at 2760 fps. That's plenty, I think, for the largest of bears making nearly 6000 ft-lbs KE at the muzzle. And that has become the new "standard" for those who crimp into the bottom cannelure using the best powders.
I have just finished a series of blogs on the .458 Win Mag, for those who might be interested.
Bob
www.bigbores.ca
