Welcom to HGH!.You will get plenty of good information here.
Don't have the .460 but I have shot one a few times. It is brutal. But, I'm used to nasty barrels. I have the 444 Encore, .375JDJ Contender and a couple of other large bores. I had a .405 but that was more than the law should allow in a pistol barrel. Sent to Florida.
Enjoy the company and ask away for help.
Mike