Thanks for the imfo folks.
Roy, i have a Lyman peep hole site on my .44 1894 which screws into the holes already there on top of the reciever. Got it from Roger at South Yorkshire Shooting. Nicely made and adjustable for elevation and windage, cost about £35. His web site is
www.rimfiremagic .co.uk if memory serves me correct. Getting back to the Ruger i see the one on Westlake web site is shown as .38 nitro so am assuming yours retained the std barrel and it was just a case of him making the new cylinder? Tim
Additional. Just looked again at the Westlake site and it does indeed say the new cylinder is made to your existing barrel.