Referring back the photos, the early version measured the 0.508 inch to ogive, whereas the later and current proj measured the 0.47 inch ogive to base... offering less bearing surface ... must be a good reason for the changes...
Referring back the photos, the early version measured the 0.508 inch to ogive, whereas the later and current proj measured the 0.47 inch ogive to base... offering less bearing surface ... must be a good reason for the changes...
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