I was wondering doe hogdon have any tables to show the equivalency of dram to fps? i was looking at there brochure but it really didnt give much information. Is 1200fps close to a 3 dram load or do i need to go to 1250 fps or is that number closer to 3 dram.
The "dram equivalent" term is still used on factory loads, but has very little relevance to handloads.
"Dram" is a unit of measure that was used with blackpowder....for example, a 3-dram load of blackpowder gave a muzzle velocity of about 1200 fps with 1-1/8 oz of shot. A 2-3/4 dram load had a lower velocity with the same 1-1/8 oz of shot. With only 1 oz of shot, a 3-dram load was about 1300 fps.
All of that is pretty much irrelevant today - you choose your shot charge and the velocity you'd like, and load accordingly from the powder company's data. For example, for 16 yard trap, I load AA hulls with a Win 209 primer, Claybuster 1 oz wad (AA12SL clone), 1 oz of #8 hard shot, and 17.3 grains of clays - gives about 1180 fps.
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