I have 2 magnum rifles left plus my 357 and 44 magnum handguns.

I have owned a lot of them over the years but the only 2 I still have are my 375H&H and my 300 H&H.

Keep in mind that "magnum" is more of a sales pitch then a measurement of power. Neither of the H&H cartridges above was called "magnum" when they were first introduced. The 375 H&H was called the "375H&H Magnum" about 2 years after it hit the market (so I am told) and the 300 was called the Super 30 at first.

I have a 404 that is not named "Magnum" and it's more powerful then my 375, and I also own three 9.3MM rifles that are all quite powerful, none of which have magnum in their name.

Nothing wrong with most magnums as a class, but nothing magic about them either.