I had an HW57 in .177 - it was a nice size and weight and, it shouldered nice. I really wanted to like it.

Mine had the metal pop up breech that, to be honest, could have been smoother to operate.
There's some little plastic bit in the stock, under the linkage, that seems to have been put there as a bodge.
It was probably THE noisiest springer I've ever shot.
And, don't get me started on those bloody tiles.

Honestly, I was glad to see the back of it and, I won't have another.

The impression that I got from it was that it could have been such a good lightweight rifle but, there's too many little things that all add up to go against it.

Give me a 99 or a 30 over a 57 any day.