I've got a set of the old label Fender 7150 on my Korean P. They sound good, very warm, but much quieter volume-wise than traditional nickel wounds. They work great with the aggressive Reverend pickup.
Remember Nickel is not magnetic......A good Nickel Plated Steel final wrap, like LaBella Slappers, is a good option...It is would with Stainless first and then a final qrap of NPS...THe same goes for Carvins series that features Nickel..There is a lot to be said for the comfort of playing this kind of set vs. Stainless that acts like a rasp by the end of the gig.
From Wikipedia... "Nickel - Physical properties Nickel is a silvery-white metal with a slight golden tinge that takes a high polish. It is one of only four elements that are magnetic at or near room temperature." Some stainless steel formulations are magnetic, some are not.
I also use 7150s. That's the only string I've ever used on my G&L SB-2 so I can't speak to volume compared to others. They're plenty loud enough to make a signal, that signal goes all the way down a cable into my amplifier where it gets louder.
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