And for those who do not know what Parkers were made to shoot, this is from a 1910 Parker brochure . Parker made no mention of chamber length .
I use an old credit card cut to the diameter of a cartridge to insert in a chamber , I push it in until the card stops, then I measure the distance it went in past the chamber opening . The chamber diameter can also be measured by inserting a bore gauge and determining where the forcing cone begins , and then measuring how far the gauge was inserted.
|