Don't know much about "Dr Roberts", but a quick search on google turned up the fact that the FBI issues Winchester's PDX1 round to their agents. "Barrier" penetration success was one of the criteria in the selection process according to the Winchester site. Pretty good advice I'd say. Rod
Our Flag does not fly because the wind blows against it,
It proudly waves because a soldier's dying breath blows upon it.
USAF Forward Air Controller, 5th Spl Forces,
An Loc, lll Corps, RVN, 69-70, Vietnam Vet '69-'73