I log every type of ammo in every gun I shoot because it's important to me to know factors such as penetration, trajectory, etc.
And yes, I do shoot what I carry.
Mostly Corbon, Underwood, Buffalo Bore, Fiocchi, Geco.
Yesterday I shot 4 boxes of Geco BAT 9mm, 12 boxes of Fiocchi Combat 9mm, 9 boxes of Underwood 9mm and .357sig in various weights, 4 boxes of Dynamit Nobel .32, 2 boxes of S&B .32 AP, and 3 boxes of Santa Barbara .380.
The ammo above is roughly $900. Shot through 14 different handguns. In about 4hrs.
I do a lot of testing with various ammo from different guns and log it all. I always want to know what happens after the bang, where it hits and what damage it does into various targets from various guns at various distances.