My Brother bought a Sharp Innova for £4. 17 Shillings from next doors Kays Catalogue in.22in flavour,
We were shooting it a couple of months ago and he uses Marksman No:2 .22in as it came with a box of those, it is very accurate for it's age,
Strangely enough I can still get these in boxes of 500 for around 4 quid through Redhill Revolvers,
I have heard that the .177in Innova's are OK! with RWS Superdomes, though I have shot many old guns with SMK Spitfires,
These may be available from Cyber Gun who took over at SMK and promptly blew out all it's retail customers
Really! peed off about that, but check out that they may do mail order for ammo etc,
HTH, Bernard.