If you would like to know how many rounds of brass you have lying around, as I did, you can use the information below. If anyone wants to count them out to see how close my calculations are let me know what you find out.
9mm, 59.46gr/ea, 117.7cases/#, 8.5#/1000
38spl, 68.06gr/ea, 102.8cases/#, 9.7#/1000
40s&w, 70.1gr/ea, 99.9cases/#, 10#/1000
.357mag, 78.3gr/ea, 89.4cases/#, 11.2#/1000
.45acp, 89.58gr/ea, 78.1cases/#, 12.8#/1000
.223, 95.28gr/ea , 73.5cases/#, 13.6#/1000
.44mag, 114.38gr/ea, 61.2cases/#, 16.3#/1000
50bmg, 865.26gr/ea, 8.1cases/#, 123.5#/1000
All weights are uncleaned fired cases with the primer remaining.
Individual case weights were derived using an average of mixed brass weights (except 50bmg)
So, if you picked up 8#s of 45 brass: 8# X 78.1cases/# = 625 cases+/-
If you use 1gal ziploc freezer bags to store your brass, each (full) bag contains:
9mm, 15.6#, 1836cases
40s&w, 12.2#, 1219cases
45acp, 11.4#, 890cases
223, 11#, 809cases
If you use 5gal buckets each full one will have
9MM = 8500-9000 pieces
.40 S&W = 7000-7500 pieces
.45 ACP = 3800-4000 pieces
a few more
CASES per POUND:
.380: 145
.357 Sig: 96
.45 GAP: 86
.32: 168
10mm: 96
FN 5.7: 124
.25 acp: 260
.30 Luger: 120
.38 S&W: 120
.38 Super: 104
9mm MAK: 124
.45 Colt: 60
.30-M1: 100
.308: 40
.30-06: 35
7.62x39: 54
.50 AE: 48
.30-30: 52