Same as John I’ve won a few vintage hft & bell target comps with my mk2 service.
It’s extremely accurate but possibly due shooting at 5.5ftlbs and not dieseling. Prior to me setting it up like that it was more powerful but not nice to shoot.

It’s well worn too and has a very light trigger which helps.
I also found shooting with the peep sight inconsistent so I only use the open sights with a very light hold.

Cheers,
Matt