Question about 9mm used brass

[Snakehunter]

Recently I bought over a 1000 used once-fired 9mm cases from a fellow gun club member.
There are over 900 cases marked Speer that are the typical brass look. There is also over 170 nickel looking cases marked RP. Are the nickel ones okay to reload? I have tumbled them all and they all look good.
Thanks for helping a noob,
Glen

 

[Softail99]

I've been reloading them for years.
Go for it.

 

[daBear]

RP is Remington Peters nickel plated cases. They are fine to reload. Just look to ensure the cases show no signs of cracks as the cracked cases can damage your dies.
dB

 

[moosedude]

They are good to go. Depending on what bullets you use you may have to expand a hair more (at least i do). They also tend to be a little stiffer in the resizing die, but they are certainly ok to reload