Only to those who are very, VERY hard to convince!

You are free to believe or disbelieve anything you read here on the forums.
However, I still have access to both these guns and would be happy to prove what I have said.
Wanna put some money up?

I take credit cards, cash, or fine doubles.

The 458 was ported, magnaported, and was one of the first rifles to be done here in Oz.
How much difference it made to the 458 recoil I don't know as it was done before I bought it.
Some time later one of the guys who took over the Oz Magnaport said that the rear side ports were not done correctly on that rifle and the only reduction in recoil would be in the muzzel lift.

However, the 458 was at least 1/2 pound lighter and was clocking an extra 50-60 fps compared to the 470.
The area of the recoil pads was similar but the 458 had a very thin pad with little cushioning effect.
The 458 was running the full 2125 fps and had plenty of healthy recoil, but it was a pussycat compared to the 470.
For anyone who thinks they know about recoil effect in big doubles, if they have only fired the heavy for cartridge British rifles, they would not know what the lighter guns are like.
Believe me, there is a world of difference between 10 1/2 pound 400 and a nine pound 470.
A very, VERY large difference!

Comparing a 458 to a 470 in similar weight guns you have to remember that the 470 is loaded with close to 40 grains of extra powder when loaded with 4831 or similar and this combined with the fact that the 458 requires a much faster powder makes a big difference to felt recoil.