Recommendations for .22 ammo?

[Alan de Enfield]

Dear Forummers

I have begun shooting my new[for me] Lee Enfield No.7 Mk I, and so far am having fun, which is the main thing.
I've not owned a .22 previously, and I'd appreciate recommendations as to which ammo to use.
First question: high velocity or sub-sonic?
Second question: which type is best in the long No 7 barrel?

Thanks in anticipation!

In my No7 Mk1 I've had fairly good results with HV 'CCI Stingers', but (by a big margin) much more consistency with Sub-Sonic "Winchester Max" 42 grain