At the time I saw the new ones in my favorite LGS didn't give the 610 the attention it deserves because I didn't have ammo for it and I wasn't going to start loading for a brand new caliber.

I have a few oddball boxes of .40 picked up in trades here and there but about a month ago my friend gave me a new set of 10mm dies, ziplocs full of .40 brass, about 2k hard cast bullets and 1k primers (all "abandoned" by his neighbor who moved out of state and couldn't take it with him).

Last week a lgs had some PPU 10mm cartridges on sale for $23/50. I sold 6 boxes of .45 ball that I wasn't going to shoot and bought 10 boxes of 10mm for a gun that I don't own...yet. Now I'll just wait for a 4" 610 to show up.