I haven't seen many for sale or any videos of 25 cals. I know AoA sells them but other vendors only seem to carry 177 - 22 cals and I haven't seen a post by anyone that owns one. I got a used one and so far, I'm loving it.
My 56 is a 22. Haven't shot it extensively though because I didn't like how the grip was in relation to my trigger finger and it seemed a bit harder and and different to cock. Rather difficult to explain it was uncomfortable for me to shoot it in general so I stopped shooting it. Its now a decorative piece.
CA