Why are you avoiding one of the most widely used, versatile chamberings? That really doesn’t make much sense - there are high numbers of rifles available in Creedmoors, lots of ammunition and components available and you can load anything from 95 to 156gr meaning it’s in 30-06 territory and will drop anything in the U.K. with authority and be ballistically superior to many “traditional” chamberings at longer ranges.
To avoid it would be foolish and akin to not touching your mate as another one of your mates shouted “jaundice”…..

Regards,
Gixer