The right stufffor the Milwaukee 7145-21 Finish nailer:
When used with the Milwaukee 7145-21 Fininsh Air Nailer, these nails do a fine job of securing trim without splitting the wood. The nailer countersinks the narrow nail heads nicely. I used a very inexpensive air compressor, yet the nailer quickly set all the nails on the first shot.
The only issue I had was that the nailer won't feed the last 8 nails for the row, but just drop in another row, and it picks up where it left off.