Because of the different burning rate of the various types of gun powder used in loading shotshells there is very, very little correlation between the two terms. Shot shell manufactures should have dropped the term 90 years ago.
60
There are 27.5 grains in a dram. 256 drams equal 1 avoirdupois pound.
1 dram = 27.34 grains.
60 grains equates to 2.1943 dram.
1 dram=1.77 grams
A dram is used to measure the amount the mass and volume of a certain object. A teaspoon is equal to a liquid dram, otherwise it is equal to 1/8th of an ounce.
Question: How many Drams in a Troy Ounce? Answer: One Dram equals 27.34375 Grains under the "Troy" system. Further, there are 480 Grains in a Troy ounce. Dividing 480 / 27.34375 yields a result of 17.554285. Meaning that there are 17.554285 Drams per Troy Ounce, +/- 0.0000001
A dram is used as a measure of powder in apothecary. It is 1/256th of a pound. It is 1.771845 grams. It is also an 16th of an ounce.
1 fluid dram is equal to 1/4 US tablespoon.
3.887 grams are equal to 1 dram.
A fluid dram is a unit of volume equal to 0.125oz or 1/8 fluid ounce.
An apothecary (pharmacist) dram is equal to 1/8 ounce. 10dram x 1/8oz/dram = 1.25 oz or 1 1/4 oz