With some cartridge types and rifles, I keep track of things a bit more .
Above is a photo I posted on an early thread (
LINK) on 8 June 2009. The red colored letters on the case heads are how I keep track of individual cases' loading histories.
The colors in the headstamp letters are fingernail polish. When a batch of cases arrives here, I'll divide them into groups of 5 or 10 cases each, if they are a group I'd like to track carefully. Each group gets a unique mark. For example, the red ST indicates the 8th group of five cases that I got in a purchase of 100 Hornady cases in May 2009 from MidSouthSS. The red BUSHMA indicates a case from the 7th group of five cases.
I use a separate 3x5 card to record the loads of each group. The card travels with the group of cases to the range so I can see what in a particular group is loaded with.
In the reloading room, the card provides a history of the loads. It also is number keyed to my notebook of reloading information. For example, the ST group has now been reloaded six times; the last time was on 9 July, when it held 51 grains of Enforcer with a 160-grain bullet.
The red letters associated with "Hornady" are used to identify individual cases in each group. So, the red O indicates the second case of the group of five. I don't individually label the cases for all the groups, but it's used, for example, when I will be putting a series of increasing powder charges in a group of cases. The individual cases can be listed with case head measurements before and after firing, for example.
I started to use the fingernail polish after I dumped a box of 100 reloads on the ground one day at the range. Although some were labelled with Magic Marker/Sharpie information, getting them all sorted out was a nightmare. The fingernail polish is tough enough to withstand more than 20 firings, which is the max I've ever used on a tagged case so far.
The cards say I'm up to 11 reloads on some groups of 450B cases from 2009. No neck splits or other failures so far, and most of my loads were far from light.
--Bob