Can't agree with that bit, I have shot Supertargets and ordinary ones, that are smooth, quiet and tackdrivers...not powerhouses but there was a reason they were a go to Bell target rifle in their day, when the main opposition was the Airsporter Club.
As I recall my mates was very accurate, but did not like our league control pellet the AA Field.......Will do a test if I get it and post some photos.
As with prewar BSA's practise with the trigger is needed as heavier than a German jobby, but a good one breaks like glass (as does a BSA with work).
ATB, ED