The Wolff link sounds a little self-serving. I suppose the best idea is to shoot every magazine every now and then to keep an eye on them.
.45acp, .40 S&W, 9mm, .38 Spl, .380 acp, 22lr
12 gauge, .223/5.56x45mm, 30-30 Winchester
2 Chron. 7:14 Christians must seek His face