might be in some of the SAMMI specs?
This is for the .357. I assume this is the total case capacity, meaning 26.2 gr of H2O is at the case brim? Where are they getting this information?Case capacity 26.2 gr H2O (1.70 cm3).
Are you willing to do some math? Are you willing to spend a dollar or two on supplies and invest an hour or less of time?Looked online but couldn’t find the case capabilities for these 3 rounds. Could someone with a reloading manual clue me in?
On Wikipedia, for most cartridges, you’ll see something like this:
This is for the .357. I assume this is the total case capacity, meaning 26.2 gr of H2O is at the case brim? Where are they getting this information?
I could do the math or more simply use a dropper to fill the case then subtract the weight of the empty case.Are you willing to do some math? Are you willing to spend a dollar or two on supplies and invest an hour or less of time?
Even easier. Go to a drugstore and get a syringe about the size you think the case capacity should be in CC. Plug primer hole, fill syringe with water, transfer water to case until it hits the brim, subtract what’s left in the syringe from the original fill. Voila! Your case capacity in CC. Repeat with a couple dozen or more cases and do some math: minimum, maximum, mean, median, average, standard deviation. EZ-PZ.I could do the math or more simply use a dropper to fill the case then subtract the weight of the empty case.
Which is why some math is involved. The median, mean, average, max/min and SD will fill in the gaps at least well enough for load development.I've measured case capacity of some handgun rounds and no two manufacturers have the same capacity of the same caliber.