A friend had the 600 and I only shot it twice once. A couple of other times once only, to show how tough I was.

It is the worst kicking rifle I have ever fired, and that includes the .577 and a couple of 8 bores. Weight is around 13lbs and much too light, by about 20 lbs.

The .577 is mine and weighs 10 1/2 lbs and also is a real kicker but not as bad as the 600. I have thought about adding weight but since it is easy to carry and not that bad to shoot standing I think I'll leave it.

I would say the 577 is, maybe, 25% more than a 470.