How “tunable” is a two-piece Copley (or similar) flute?
I’m looking at a used two-piece blackwood Copley flute in D. The thing is, it has no tuning slide, but I’m told that there is still a limited “range” of tunability (if that’s even a word) that can be achieved by pulling the headjoint out slightly from the body. Obviously, it can’t be practically pulled out more than a few millimeters, and I’m thinking that if I have to go *above* A=440 (joint all the way in) I’ll be out of luck.
Is this something I could practically take to a session and still hope to be in tune with other instruments/changing ambient conditions/warming flute/etc? Am I better off just saving my pennies until I can afford a flute with a proper tuning slide? From my limited experience with Copleys, I really like them and was hoping this would work for me.