The 97K is a hard to beat spring piston rifle. I bought mine 2007 for $499 at Straight Shooters.
It's a Beeman model with Huntington Beach CA on the right side.
View attachment 488182 Over the years I've tuned mine several times with different combinations, and I've ended up with a 13fpe shooting 8.48 gr at around 835 fps and it's about where I like it at. It will shoot benched off of bags, or off of cross sticks, or propped up against a tree, it doesn't matter. It shoots JSB's well and some H&N's, but currently my pellet of choice is the QYS 8.48 gr. I would recommend you try some.
View attachment 488183 Mine will also shoot the 7.9 crosman premiers, but they are really snug loading. The QYS is the cleanest and best looking I've shot. It also doesn't turn your thumb black..lol. Smallest groups I've ever shot with my 97K, was with JSB 8.44 and QYS 8.48, but the current JSB 8.44 aren't as good in mine as they were years ago.
Here a target shot the other day at 40 yards rested on bags with QYS 8.48's and using a $125 Hawke 2-7X32 at 7power. The red dots are 1.0" diameter.
View attachment 488185 5-shot groups. The one shot thru the squirrel KZ is 4 shots, at about a 1/4 diam.
I've had my 97K set up with about 8 different scopes over the years, from "high dollar" scopes to the one I have now only $125, and they all worked great. I'm kinda digging this little light weight Hawke at less than a pound right now.
View attachment 488186 They are fun rifles to shoot and work on if you like to tinker, so don't be afraid to try different stuff. Some snug fitting delrin spring guides will remove the twang if it bothers you.