Headspace question

[Bob Seijas]

Yes, they are tighter. After the first batch of NMs was evaluated by the Army rifle team in 1953, Bill Brophy wrote a scathing report on them and the simplistic way they were chosen. He was invited to attend the process at SA in 1954 and had a list of suggestions. Two of the recommendations were that candidates be selected for minimum bore dimensions and minimum headspace. These were adopted for 1955 and became standard thereafter.