If it helps add some confidence to this stuff, I used the air cored solenoid model in Genesys to predict the inductance and Q vs frequency for your coil. 49 turns 31mm diameter length 22mm wire diameter 0.4mm.
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This model in Genesys is typically quite good and I'm lucky to have access to CAD tools like this. Genesys predicts 65uH and a Q of 122 at 1.45 MHz as in the screen capture below.
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Although the red Q curve looks very similar to the Q curve in my earlier software plot (with a peak of just over 200 at about 7.5 MHz), I wouldn't trust either Q curve beyond about 80% of the way up the rising part of the curve. Above this I think both my software and the Genesys model will have creeping errors that could become very significant. Fortunately, you are operating down at just 1.45 MHz and I think the Q estimate of 122-124 across both tools should be fairly close to being correct.
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When making the coil for real, there will be uncertainties in the winding accuracy and the wire diameter and the enamel thickness of 'real' 0.4mm wire and these will introduce some uncertainty. Plus there will be some inaccuracy in the software tools (but I think not much down at 1.45 MHz in this case).
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