It's great brass.

I load my .38 +P and .357 Magnum self defense loads into new and once fired nickel plated brass to distinguish it even more from the practice rounds.

Nickel plated brass tends to be a little more brittle than non plated brass, as an artifact of the plating process, so case life is slightly shorter, but not enough that most folks will ever notice.

If you've got some you're giving away I'll be happy to take it off your hands.

.38 or .38+P makes no difference as the brass is identical except for the head stamp. .357 Mag brass is great as it's about twice as expensive to buy.