Sparkles in brass

I have my Frankford wet tumbler with Frankford pins and it does a great job
of cleaning but I have been noticing very small stainless sparkles on my fingers
and the press.  (No I have not been to the TT bar
Just wondering if anyone else sees this and if it can mess up my gun

My SS pin brass das no flecks or residue of any kind.

I have been using SS pins in my Thumbler for two years now.  No issues outside of the random pin getting wedged into primer pocket.

Chip

No flakes for me either, the only issues that I ever experienced are the occasional pins stuck in the flash hole, and black residue on the case from the dirty water if I leave and tumble for way to long.
Otherwise everything is great, got my pins from Midway and I am using a Lortone tumbler.

Mike,

Are the pins that you bought made for the purpose of tumbling media?

Are your pins magnetic?  I would think that if the sparkles are from the media, they would get picked up with your magnet.

I am using the Frankford pins that came with the tumbler
and they are magnetic I am using the 5 lbs that came with it
and added 3 lbs more of the same pins so I am using 8 lbs total
of pins more is better right.

are you using nickel plated brass i did once and after reloading several times one batch started flaking. I don't use nickel plated cases any more ruined my dies

I do have a few odd range brass that are plated that I use for action pistol
I will have to toss them and see what happens

Are you sure it is stainless you are seeing, some users on CMP Forum (IIRC) reported small flecks of brass that were removed by the stainless pins.

I looked thru my action pistol brass all my range pick ups and
picked out all the plated brass and there are some that the plating
almost all gone except for the inside. and it look like the sparkles
are not magnetic I think that would rule out the pins
I only had a dozen or so plated brass so out they go
so I think I found the problem

I use SS media and find tiny "sparkles" that are actually brass colored in good, natural lighting.  Indoor lighting hides most of it and makes it appear whitish in color, but it is brass.

I've found the amount of brass flakes drops off after the brass has been cleaned a few times.  And rinsing the brass well helps to keep it off the press.

Sounds like there might be some impact surface hardening going on...