Hi folks,
Just as an update, I struggled with H110 to get a good set of groups despite several attempts - don't have any magnum primers (nor available nearby) and getting clean, consistent ignition just wasn't happening with resulting crappy groups. (Interestingly Hornady lists a Large Pistol Primer with H110 and the 240gr JSP - though pretty much every other source I have found lists H110 with Magnum primers)
However, looks like N110 is working.
Shot this as part of a ladder:
4 shots, think top right might have been me. Bit more testing to do with same load but I like it so far.
Scrummy