Thanks for your thoughts. The chrony numbers indicate it's at 10.4 ftlb. Can I lower it to 6 or 7?

Will try both domed pellets and clamped to see what happens, and will let you know.

This is my first ever post, so hello everyone. I've just bought my first pcp, an Air Arms S200, Mk3 in .177. I'd like to tell you about it and ask you experts whether you think it's ok or a dud, or whatever. I bought it secondhand at a bargain price. It seems to be about as accurate as my Weihrauch ...