Well I managed to find the time to slap the first coat of epoxy on.
I thinned it 15% with acetone - I reckon about 10ml of epoxy will do a good coat on a gun this size.
It isn't finsihed yet - I was planning on sorting out the metal fittings and taking it for a swim to see how it balances.
Then take off the fittings and rub down or scrape the coats allowing a week inbetween adding another thin epoxy coat. I was aiming at two thinned coats of epoxy and then one coat of non-thinned epoxy. After this I was planning on using two coats of marine varnish with UV-inhibitor. If anyone has any suggestions on finishing a gun let me know
Ed