Thanks for the advice, Bullbarrell and Mick.

Both of your posts re-assure me greatly that 5.5ftlbs is likely going to be more than accurate enough at 20 yards for me at this stage - I expect it will be a lot of practice before the rifle holds me back from improvement!

As to Bullbarrells question about 12ft/lbs being disallowed at 10metres - I haven't seen anything on this either way other than the odd post saying some clubs don't like to inflict shots of that power on their targets that where designed for lower powered guns - If anyone has a definitive answer that would be great.

Any other comments are still very welcome.