The UK Brass Band I play with is rehearsing a test piece with this passage in it:
This bar is repeated about 20 times. To finger it conventionally, I'd be pressing valves 1+2, 2, 1, 2 for each four-note group. But I find that awkward and can't sustain it at that tempo for very long. Alternative fingerings I've considered are 3, 2, 1, 2 and 3, 1+3, 1, 1+3
None of these falls under my fingers, especially at the required tempo.
Can someone suggest the best fingering to use for this passage and the best practice strategy for getting it up to speed?