Tinker;
Do you have equipment to get an accurate measurement of the ID & depth of the cavity in that 130 grain measure. Be interesting to see how the volume compares with that of the "US" standard. By that standard a 130 grain measure would have a volume of about .547 CuIn.
PS; Incidently I checked a modern made adjustable brass powder measure made by a ML'ing supplier which goes up to 120 grains & it fit to a tee, so apparently this standard is still being adhered to by some makers at least.
PPS; For a number of years the Hercules/Alliant handloader guides included a chart showing how long a column 1oz of shot would make in the various size bores of common gauges. Neither size or hardness of shot was specified, but by computation volume worked out to an average of .288 CuIn per oz. This would mean that if otherwise accurately made the 2½-1 setting on an ordinary adjustable combination dipper would be the only setting which was technically correct. (.115 CuIn x 2½ = .2875 CuIn volume for 2½ drams powder).
Last edited by 2-piper; 05/30/09 07:45 AM.
