Personally I would chose the Ruger Redhawk. Either the 44 mag or 45 Colt will do anything that needs to be done. The 45 Colt can be loaded to very high pressures (see the article titled Rugers Big 45 on the homepage), use the heavy weight bullets, and take any game you care to hunt. The guns are brutally strong and a bit cheaper than the Taurus from the prices in my neck of the woods.
The Redhawk may not be the latest on the scene but its one of the best.
I second the Redhawk, It is cheaper and a whole lot of gun for the money. Either caliber will do anything that you want to do, now or in the future. The .44 mag can be taken to low end .454 velocities and the .45 Colt can be taken to nearly the same velocities as the custom 5-shot guns. But only if you use the right bullets and reloading practicies can you reach these levels safely.
Either gun will perform what you need it to do. Also, any of the cartridges will handle deer and hogs equally well. If you think you will be going after bigger game, the 454 will be the best choice. I have shot both brands and from my experience the Taurus is the better built of the two guns. The Super Redhawk I bought in 454 has been to the factory once because it would not function and is now at Mag-Na-Port because it will not group.
I would personally go with the Redhawk over the Taurus. It is an established design with who knows how many examples in the hands of shooters. The Taurus, while seemingly a good gun, is much newer and less proven.
Another option, if you're willing to look some, would be a Colt Anaconda. Of the three that would be my choice, in .44 Magnum, with the 4" barrel. A bit handier to carry than the Redhawk yet still quite strong.
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