My 9.3's measure .454" shoulder and .393" neck, fired case, for .061" step, which is more than enough.

Is this correct? If so, more than enough shoulder for headspacing. However, one must be careful with the shallow shoulder angle.

Richards
Type Rifle
Place of origin United Kingdom
Production history
Designer Westley Richards
Designed 1900
Specifications
Case type Rimmed, bottlenecked
Bullet diameter .358 in (9.1 mm)
Neck diameter .375 in (9.5 mm)
Shoulder diameter .437 in (11.1 mm)
Base diameter .470 in (11.9 mm)
Rim diameter .590 in (15.0 mm)
Case length 2.75 in (70 mm)
Overall length 3.59 in (91 mm)