Marrakai,thankyou for the heads up.
Very much appreciated.

I experimented with my Lyman mould by cutting a new circlip groove 4 mm closer to the nose of the hollow base plug.
The result is a 600gn projectile instead of a 475gn projectile .
Accuracy tests are acceptable at 1.5 inches at 50 yards.
Still hasnt been tested on big boned game yet but am sure it will perform up to my expectations